https://wiki.eastbots.org/ 2026-05-08T11:25:29+00:00 https://wiki.eastbots.org/ https://wiki.eastbots.org/_media/wiki/logo.png text/html 2018-11-01T04:22:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2013_season?rev=1541046127&do=diff Here's most of our rookie team. That year, our build space was in the theater shop props closet. text/html 2017-12-12T13:55:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2017_rgb_light_strips?rev=1513086933&do=diff On this robot, the team decided to try adding some LED strips to the robot. Our idea was to use them for decoration, and possibly robot software status, and driver assistance. Design We used our digikey voucher for these: <https://www.digikey.com/product-detail/en/sparkfun-electronics/COM-12021/1568-1153-ND/5673739> These strips are flexible circuit boards, containing multiple LED (Light Emitting Diode) components about an inch apart. Each package contains red, green, and blue LED chips. … text/html 2017-12-12T13:51:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2017_season?rev=1513086685&do=diff Eastbots 2017 Season Robot * 2017 Ball Collector * 2017 Agitator * 2017 Flywheel Shooter * 2017 Climber * 2017 Fixed Gear-placing box * 2017 RGB light strips text/html 2018-12-28T19:57:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2018_intake?rev=1546027049&do=diff At the front of the pivoting arm is our cube intake. Motors and Chains Compliant Wheels Mechanical Structure Cube-present sensor The intial design tried to use a limit switch to sense when we had acquired a power cube. We need to sense because the arm gets a lot heavier when we have a cube, and because we don't want the wheels to keep spinning rapidly against the cube. text/html 2018-03-02T04:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2018_leds?rev=1519965330&do=diff We've got RGB LED strips on the robot this year, for decoration and for the software to announce what its trying to do. The LED strips we had half a reel of this left over and unused from a previous season: <https://www.digikey.com/product-detail/en/sparkfun-electronics/COM-12021/1568-1153-ND/5673739> These are “analog” RGB strips that have four wires: text/html 2018-03-02T04:15:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2018_season?rev=1519964146&do=diff 2018's game is “Power Up:” <https://www.youtube.com/watch?v=HZbdwYiCY74> Subsystems on our Robot: * drivebase * 2018 arm * 2018 intake * 2018 climber * 2018 autonomous select switch * 2018 LEDs text/html 2019-02-25T03:51:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2019_cargo_present_sensor?rev=1551066704&do=diff Way back on our 2018 intake, we used an infrared break beam sensor to detect power cubes. Since we have a bunch of maller sensors left over, we wondered about using them to detect the orange cargo ball in Deep Space. The large width of our cargo intake is too long a distance for even the larger adafruit break-beam sensor to be reliable. Give up? find an expensive industrial break-beam sensor? text/html 2022-02-09T03:12:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2019_i2c_sensors?rev=1644376355&do=diff I2C Sensors for 2019 Deep Space Robot The team picked out several sensors to enable robot code to respond to the environment. All turned out to have an I2C interface. Fortunately, the RoboRIO has two I2C controllers: one on the base unit and one on the MXP expansion connector and broken out by the NavX board. text/html 2022-03-02T01:55:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2019_leds?rev=1646186107&do=diff After our success last year with status and decoration LED strips on the robot, we're doing somthing similar but better this year. Parts for 2019 * Addressable LED strip <http://www.revrobotics.com/rev-11-1198/> based on WS2812B chip * Arduino Uno processor <https://store.arduino.cc/usa/arduino-uno-rev3> * Arduino proto shield <https://store.arduino.cc/usa/arduino-proto-shield-rev3-assembled> * LM2596-based DC buck regulator board text/html 2019-03-21T01:53:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2019_season?rev=1553133237&do=diff * 2019 drivebase - first time doing west coast drive in competition * 2019 cargo arm mechanicals * 2019 cargo present sensor * hall effect sensors for back-position limit * 2019 hatch panel system * 2019 climber * 2019 LEDs * 2019 Software Team Toolkit * 2019 I2C Sensors text/html 2019-02-27T18:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2019_software_team_toolkit?rev=1551292532&do=diff This page is about a checklist for a toolkit of important things to be carried by or available to programmers or drive team members at FRC Competitions. Some of these things should be considered essential, some are nice to have. Discuss. Note that some of these things might be critical to the rookie team or alliance member team that your team is trying to help out. So consider having two kits: one stays in your pit or with your drive team, the other can go with your outreach and assistance… text/html 2022-05-13T01:46:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_ball_color_sensor?rev=1652406368&do=diff For detecting the color of each “cargo”, we use a Rev Color Sensor V3, mounted in the tower. (replace this boring picture with a pic of the sensor actually mounted in our robot) At least two different locations were tried: lower tower, and upper tower. Which one did we settle on, and why? text/html 2022-08-15T03:30:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_ball_manager_details?rev=1660534200&do=diff Ball Manager System 2 Independent Belt Systems, 2 Banner Prox Sensors, 1 Color Sensor Github BallManager.java Indexer.java ---------- Our indexer runs the lower portion at a much faster speed than the upper belt such that we can quickly get the ball into the tower and then carefully control the ball path. In order to achieve this functionality, we employed a REV color sensor and a photoelectric proximity sensor. We used the color sensor’s proximity sensing for lower ball position and the p… text/html 2022-08-15T03:21:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_ball_manager_tower?rev=1660533681&do=diff Tower/Indexer Independent Two Motor Tower, Storage for Two Balls Github Indexer.java Superstructure.java BallManager.java ---------- Design Goals In the initial brainstorming period of robot concepts and ball paths, some goals were set: * Reliably hold and store balls under robot movement and impacts text/html 2023-01-20T04:20:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_ball_presence_sensors?rev=1674188400&do=diff Correct operation of our ball manager tower requires detecting when a “cargo” game piece (ball) has been collected by the intake, and delivered to a position just below the shooter flywheels. Early Prototyping We first tried using a Rev Color Sensor V3 to both detect ball presence and its color. The V3 color sensor incorporates an infrared (IR) detector that sometimes would detect either ball, but it wasn't quite reliable. text/html 2022-06-03T19:56:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_climber?rev=1654286168&do=diff Climber 2x Thrifty Telescoping Tube Kit Regretted using a rope based climber. Reminder to self, never again Github Climber.java ---------- Initial Design The climber design was COTS unit from The Thrifty Bot, our robot was designed early on to have the two climber tubes mounted on either side of the tower. text/html 2022-06-03T19:37:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_drivebase?rev=1654285025&do=diff Drivebase 4 Traction, 2 Omni Wheeled Tank Drive The overall design was decided before the season started, was not modified thereafter Github Drivebase.java CurvatureDrive.java ---------- Early Testing The code for the drivebase was created in within the first 5 days of the season, was immediately ready to test once the drivebase was handed off to software. There were no physical problems noted as of that time. text/html 2022-08-15T02:58:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_intake?rev=1660532309&do=diff Intake 2 Roller, Pneumatic Activated, Bird Wheel Github Intake.java BallManager.java ---------- Design Goal Before brainstorming and designing possible intakes, a few goals were established: * Consistency: all balls ingressed (regardless of ball position, wear, or inflation) should take a similar path and end up in the same place. text/html 2023-02-08T04:10:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_leds?rev=1675829442&do=diff LED's 2x Strips of RGB Addressable LED's The silicone protective layer started to flake off, however didn't affect the performance of the LED's Github LED.java Cool Wave! public void wave(HSVPreset color, double time) { for (var i = 0; i < buffer.getLength(); i++) { double v = 140 + Math.sin((i - pixelOffset) / (double) buffer.getLength() * Math.PI * 2) * 115; buffer.setHSV(i, color.h, color.v, (int) v); } if (timer.get() < time) { if (pixelOffset == buff… text/html 2023-01-20T03:48:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_season?rev=1674186503&do=diff 2022 Rapid React Photo by Bradley Nemitz ---------- * 2022 Drivebase - West Coast style with 4 traction and 2 omni wheels * 2022 Intake * 2022 Ball Manager Tower * 2022 Ball Manager Details * 2022 Ball Presence Sensors - Banner Engineering proximity sensor * 2022 Ball Color Sensor - Rev color sensor V3 * 2022 Shooter - Bi-Wheeled * 2022 Climber - 2x Rope Based, Thrifty Telescoping Tube Kit text/html 2022-06-04T00:55:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/2022_shooter?rev=1654304150&do=diff Shooter Bi-Wheel Flywheel The design was decided through a few rounds of prototyping Github Shooter.java Shoot.java Vision.java ---------- text/html 2017-10-05T13:09:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/ams_encoder?rev=1507208985&do=diff The 2013 kit of parts (or maybe it was FC) provided us with a magnetic rotary encoder. * anymark part number may have been fc13-062 * manufacturer part number maybe AS5145B * datasheet for AS5145H / AS5145A / AS5145B: <http://www.ams.com/eng/content/download/50206/533867/34237> * <https://wpilib.screenstepslive.com/s/3120/m/8559/l/91404-using-the-as5145b-magnetic-encoder-with-the-frc-control-system> text/html 2017-10-05T13:02:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/andymark_pg71_gearmotor?rev=1507208533&do=diff Specs * part number am-0914: <http://www.andymark.com/product-p/am-0914.htm> * used for disc loading arm in 2014 ultimate ascent robot * no-load speed 75 RPM * stall torque 16.6 ft-lb history * included in kit of parts 2013 and 2014 and several others * used for disc loading arm in 2013 ultimate ascent robot text/html 2022-09-14T01:51:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/autonomous_routine_path_planning?rev=1663120303&do=diff Autonomous Routines Encoder Based Odometric Path Planning Github TrajectorySequence.java AutoSelector.java ---------- Goals and Tooling One of the goals we set during the offseason was to upgrade our current autonomous pathing through the use of motion profiling. We had tried this in 2020, but had great difficulty in getting off the ground. This year, we did more research and we were able to get ahead of the curve before we started development. We used the WPILib toolsuite for designing … text/html 2018-11-22T04:30:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/basic_led_circuit?rev=1542861017&do=diff This page explains the most basic circuit for lighting up an LED - and how to calculate the value of current-limiting resistor that is needed. Basic Circuit LEDs, or Light Emmiting Diodes, are commonly used to indicate somthing about a system. The most simple use is to show that electrical power is present. text/html 2019-10-04T02:19:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/battery-powered_portable_wired_network_hub_for_scouting?rev=1570155587&do=diff This is an idea that we tried to prototype in 2019. TODO: picture And will try again in 2020. The basic idea We've done pretty well with purely paper-based scouting. Now one of our programmers has written a web-based scouting application. Scouting subteam members can enter data using a laptop or phone. Ideally, we'll have 6 data-entry stations (laptop/phone) and one more for data analysis and output. text/html 2017-10-05T13:06:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/bosch-rexroth_aluminum_extrusion_framing_system?rev=1507208796&do=diff Two lengths of 20x20mm aluminum extrusion were provided in the 2014 kit of parts. Also included were some thread-rolling screws for use with the extrusion. Catalog page: <http://www13.boschrexroth-us.com/Framing_Shop/pdf/101/Page%202-11.pdf> Parts given as part of KOP 2014: * 3842992888 - two pieces. 20x20mm profile, 1.5m long text/html 2021-08-03T02:36:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/cnc_parallel_port_mapping?rev=1627958193&do=diff here is no schematic that I've found for the Mach3 CNC-machine interface board, but the signals are connected as follows, according to silkscreen text on the board: DB25 connector pin PC Parallel Printer Port Signal CNC control function text/html 2022-08-14T15:14:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/components_for_purchase?rev=1660490085&do=diff Components For Purchase The Eastbots is providing a few control system and KoP options for your team to chose from. Some are required and others are optional. Payments are being accepted through the K12 Payment Portals. ---------- KOP Chassis Choice text/html 2022-08-15T04:00:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/computer_vision_and_shooter_targeting?rev=1660536040&do=diff Computer Vision and Shooter Targeting Color Based Shooter Speed Modulation Computer Vision Pipeline Github PrepareShot.java Shoot.java ---------- Detection Pipeline For this game in particular, it is advantageous to be able to reliably shoot from variable distances. To accomplish this, we needed to figure out a reliable method of targeting the goal and choosing the right shooter speeds. When we saw that there were retro reflective tape strips that lined the goals, we immediately looked in… text/html 2018-01-22T21:08:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/control_system?rev=1516655322&do=diff The RoboRIO The RoboRIO is currently required as the “brain” or master control computer in all FRC robots. Here, we collect resources on how to connect things to it and how to program it. Basic References: * <http://www.ni.com/pdf/manuals/374474a.pdf> - RoboRIO User's manual at ni.com text/html 2017-10-05T13:08:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/cui_encoder?rev=1507208925&do=diff first choice link: <http://firstchoicebyandymark.com/fc16-029> CUI, Inc. Part Number: AMT103-V Kit manufacturer's datasheet: <http://www.cui.com/product/resource/amt10x.pdf> also available from Digi-Key (LINK TODO) text/html 2019-10-08T03:16:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/dio_tester_and_breakout?rev=1570504601&do=diff During the 2018 season, we hand-wired a little board to break out and debug the Digital I/O wiring to the break-beam sensor on our intake This project is about a PC Board to replace that, and for other DIO testing and wiring. * Review DIO (Digital I/O) in the text/html 2018-12-02T00:37:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/electrical_schematics?rev=1543711034&do=diff This page is about schematics, specifically schematic diagrams of electrical or electronic circuits. Here's a video introduction that may be useful: <https://vimeo.com/90280008> The basic idea in a schematic is that symbols stand in for components, with lines representing wires or connections between them. Many of the symbols you'll see are described text/html 2017-10-05T12:57:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/encoder_theory_and_sofware?rev=1507208254&do=diff General * motor control and encoder theory: <http://ocw.mit.edu/courses/mechanical-engineering/2-12-introduction-to-robotics-fall-2005/lecture-notes/chapter2.pdf> FRC non-FRC encoder stuff * Good blog post about encoders: <http://www.hessmer.org/blog/2011/01/30/quadrature-encoder-too-fast-for-arduino-with-solution/> * Quadrature Encoders in Arduino, done right: <http://yameb.blogspot.com/2012/11/quadrature-encoders-in-arduino-done.html> * dedicated hardware encoder processor board: <… text/html 2022-08-14T15:25:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/erc_information?rev=1660490734&do=diff ERC Homepage ERC (Or East Robotics Competition) is a small-scale robotics competition our team developed as part of our 2022 training program. It was developed fully by student leadership and it functions to emulate an FRC build season in a lower-stress environment which enabled newer members to be more involved and to have more hands-on experience than in a regular off-season. text/html 2018-12-19T04:07:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/fakerio_digital_input_tester?rev=1545192451&do=diff Ever need to test a switch assembly or sensor that will eventually plug into a RoboRIO DIO port or motor-controller limit switch port? Or just provide power to somthing with the FRC-standard 3 pin connector? Version One: Input only FakeRio Steve uses a perfboard version of this to test and demo various FRC electrical bits. text/html 2022-08-14T15:00:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/game_manual?rev=1660489254&do=diff Game Manual Game Manual Coming Soon!! 👀 ---------- text/html 2018-11-16T21:47:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/git_introduction?rev=1542404862&do=diff Git is a piece of software called a “version control system” or “revision control system”. The electrical team is using git for our work with schematics and printed circuit board design. The software team is using it for robot code. Both teams are creating and changing many computer datafiles, which they need to share and track. Version control systems make it easy to keep track changes to files, to back up to old versions if a mistake is made, and to coordinate changes among many users.… text/html 2020-03-11T21:05:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/give_jetson_a_static_ip_address?rev=1583960735&do=diff If you plug a jetson nano's ethernet port into a home or school network, it will use DHCP to get assigned an IP address so you can download packages with apt and manage your code with git. But on the robot at competition there is no DHCP server (unless you're on the field) so its convenient to give it a static robot IP address. Here's how. text/html 2019-03-21T03:13:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/hall_effect_sensors?rev=1553137987&do=diff History: WCP-0971 Eastbots robots have used hall effect magnetic sensors in at least 2015, 2016, and 2019. All of those have been the West Coast Products WCP--0971, which until recently looked like this: Two new ones ordered during competition season 2019 look a bit different: These arrive with no connector, and only tiny surface pads for wires or a connector to be attached. Surface-soldering a three pin receptacle as show makes them plug-compatible with the original WCP-0971s, but th… text/html 2022-08-14T00:12:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/history?rev=1660435964&do=diff History of the Eastbots The Eastbots were founded in the fall of 2012 by a small team of students. ---------- Year-specific information * 2013 Season - Eastbots Rookie year! Ultimate Ascent. * 2014 Season - Aerial Assist * 2015 Season - Recycle Rush * 2016 Season - Stronghold * 2017 Season - Steamworks text/html 2019-10-08T03:31:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/home-built_tools?rev=1570505460&do=diff This is page is about homemade tools - any component or subassembly that the team has designed or built that doesn't go on a robot, but helps in building or testing robots or parts. * PWM generator with display * homebrew CNC Machine project 2016 * OpenBuilds CNC Machine 2018 * Limit switch inversion board * Encoder Tester * Passive PoE tester * Testing I2C Wiring - prototype I2C wiring tester * text/html 2023-03-13T18:24:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/homemade_poe_cable?rev=1678731872&do=diff In the 2017 or 2018 season, the orange power-over-ethernet cables were introduced into the FRC ecosystem. But we found some of them to be unreliable. So we built our own, based on this info: <https://www.chiefdelphi.com/t/pic-power-over-ethernet-for-2017/156160> and this diagram text/html 2020-02-27T04:46:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/installing_python_packages_offline?rev=1582778781&do=diff getting a few python packages onto the jetson-nano (or most anything with a Debian-style linux, for example a raspberry pi) without an internet connection. Assuming another Debian or Debian-derived linux box (ubuntu or raspbian) that does have an internet connection. text/html 2019-09-12T04:40:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/jekyll_website_overhaul?rev=1568263234&do=diff Our team website is hosted at github.io, and is built using github.io's default template engine, <https://jekyllrb.com/docs/ jekyll>. Woah, that's a mouthful already. TODO: step back and explain a little about all of those links. A student did a quick prototype of a site redesign. It consists of several pages, written in standard html using a popular stylesheet package called text/html 2020-03-11T21:01:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/jetson_nano_stuff?rev=1583960465&do=diff * Installing python packages offline - without a direct internet connection but with a usb stick and another ubuntu machine with internet * Give Jetson a static IP address - while also letting it get a DHCP address if its on a network that has that text/html 2018-11-22T16:05:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/kicad_cvpcb?rev=1542902720&do=diff Back on our kicad_schematic_entry page we talked about placing symbols, wiring them up, annotating reference designators, and so on. The next step is mapping each component symbol on the schematic to a footprint that will be positioned on the circuit board. Remember, symbols are just the abstract idea on the schematic, while footprints are the physical holes and copper pads that we solder to on the board. text/html 2018-11-09T05:16:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/kicad_pcb_layout?rev=1541740610&do=diff When you've got all of the footprints assigned, run pcbnew, the board layout editor. Setup For some of the design rule settings, see: <https://docs.oshpark.com/design-tools/kicad/kicad-design-rules/> File->Page Settings US Letter issue date, revision, title, company, comments Setup->Layers two layers thickness 0.062 text/html 2018-11-22T16:07:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/kicad_schematic_entry?rev=1542902832&do=diff We started in to kicad at the meetings on October 26 and November 2. For a quick refresher, see this video: <https://www.youtube.com/watch?v=4Gtd7xY6zS4> During those meetings, we worked on the shematic that's checked into our github at: <https://github.com/Team-4795/pcboards-2018/tree/master/dioboard1> Here are the next few steps that we'll be doing on this particular board. text/html 2022-11-21T21:26:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/knowledge_base?rev=1669065987&do=diff Eastbots Knowledge Base * Links * Parts * Home-built tools * Networking info * Control System * Programming * Tutorials and other information text/html 2019-02-25T04:04:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/mosfet_hints?rev=1551067487&do=diff Hints for using discrete mosfets for simple digital logic. The basic mosfet inverter can be drawn as: Some issues to be aware of when going from this simplified sketch to a real, robust circuit: Schematic symbol variations Never let a mosfet input float text/html 2018-02-12T18:45:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/networking_info?rev=1518461128&do=diff Networking Info IP Addresses on the field, 10.TE.AM.xx addresses are assigned by DHCP running on the FMS. * 10.47.95.1 - robot radio, programmed by radio-configuration kiosk * 10.47.95.2 - typical roboRIO static (suggested by documentation) * text/html 2021-08-03T02:37:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/openbuilds_cnc_machine_2018?rev=1627958233&do=diff This page is about a kit-built CNC engraving/cutting machine being attempted by Jeff, Steve, and the Eastbots. Frame & Motion Stage Based on the C-Beam Machine kit from Openbuilds.com: <https://openbuildspartstore.com/openbuilds-c-beam-machine/> Steve and Jeff assembled it following the video on <https://www.youtube.com/watch?v=HVR8pABCHXI> Electronics text/html 2021-08-03T02:06:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/parallel_printer_port_signals?rev=1627956361&do=diff There is no schematic that I've found for the Mach3 CNC-machine interface board, but the signals are connected as follows, according to silkscreen text on the board: DB25 connector pin PC Parallel Printer Port Signal CNC control function text/html 2023-03-13T18:06:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/parts?rev=1678730776&do=diff Hardware & Structural * Bosch-Rexroth aluminum extrusion framing system Motors & Servos * AndyMark PG71 Gearmotor - included in KOP 2013 and 2014 * AndyMark PG71 Gearmotor with encoder - included in KOP/FC 2015 and 2016 * AMS Encoder - from KOP 2013 * CUI Encoder - from KOP or FC 2015 and 2016 * Encoder theory and sofware Other Electrical * Homemade PoE Cable - how to build your own passive power over ethernet cable text/html 2019-03-13T02:16:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/passive_poe_tester?rev=1552443416&do=diff The FRC Radio can accept “Passive Power Over Ethernet”, 12-24vdc applied to the two unused pairs of Cat-5 cable wired for 100-base-T data. After hand-crafting some PoE injector cables, we wanted to test them before putting them on the robot and radio. So we built a simple tester. text/html 2022-08-13T23:33:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/past_years?rev=1660433613&do=diff Past ERC Seasons A Showcase of our Past ERC Seasons ---------- * 2021 Radio Roundup * 2020 Trash Dash text/html 2022-08-14T16:22:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/payment_information?rev=1660494167&do=diff Payment Information There are no registration fees, this is only for purchasing KoP kits. We take payments through the K12 Payment Center ---------- If you have an account: Log into your account, click on school fees -> filters -> select a school (East Chapel Hill High School) text/html 2018-11-01T03:34:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/printed_circuit_boards?rev=1541043251&do=diff These pages are about designing our own custom printed circuit boards. Our driving project is the DIO Test board. We're starting by using software called kicad. There's a decent set of kicad videos made by parts distributor Digi-Key: <https://www.youtube.com/watch?v=vaCVh2SAZY4> . Other text and video kicad tutorials can be found text/html 2022-11-21T21:29:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/programming?rev=1669066155&do=diff Programing Knowledge Base ---------- Simple Mechanism West-Coast Drivebase text/html 2018-01-28T19:10:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/pwm_generator_with_display?rev=1517166620&do=diff PWM Generator with Display This project generates “servo PWM” signals for testing servos and FRC Motor Controllers. Some of its features: * two PWM outputs * slide potentiometers for controlling servo position or motor speed and direction text/html 2018-12-12T03:31:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/roborio_digital_io?rev=1544585519&do=diff On this page we'll describe the 10 “DIO” Digital I/O connections on the RoboRIO. Introduction By “digital” or “binary” we mean that each connector can convey a piece of information that is in one of two conditions. There are several ways of saying this: text/html 2019-03-14T18:18:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/sensor_power_from_usb_battery?rev=1552587516&do=diff Need Power a sensor or other 5v thingy from one of those common portable battery-powered cellphone rechargers. Problem: those portable battery packs that output usb power for phone recharging have a minimum current requirement: draw too little and they figure the phone must be fully charged and they shut down completely. text/html 2023-01-20T03:47:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/start?rev=1674186471&do=diff A Wiki for the Eastbots: FRC Team 4795 ---------- * Knowledge Base * ERC Information * 2023 Season - Charged Up * History and past seasons text/html 2019-05-04T02:15:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/survey_of_talon_srx_breakouts?rev=1556936117&do=diff So far as we know, there is no perfect breakout board for the talon SRX 10-pin “data port” connector. COTS boards * <https://www.andymark.com/products/talon-srx-encoder-breakout-board> * <https://www.andymark.com/products/talon-srx-analog-breakout-board> * <https://www.andymark.com/products/talon-srx-universal-breakout-board> * <https://www.andymark.com/products/sentinel-interface-board-for-the-talon-srx> * <http://www.revrobotics.com/rev-11-1278/> Custom boards from other teams *… text/html 2018-12-12T03:42:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/switches_as_digital_inputs?rev=1544586139&do=diff Over on the RoboRio Digital IO page, we showed how a single switch can be used with a single DIO to select between two alternatives in software. What if there are more two choices? More digital inputs! Selecting from among more than two alternatives One DIO input can tell the software to do one out of two possible alternatives. What if we want to select from between more than two? Use more DIO inputs! text/html 2022-08-14T15:03:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/technical_documentation?rev=1660489426&do=diff Technical Documentation A Dashboard for Documentation for the Technical Aspects of ERC ---------- * ERC Control System - Romi, Power Distribution, Motor Controllers, MPM, Electrical Wiring text/html 2018-01-28T19:06:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/test_power_panel?rev=1517166418&do=diff A Test Power Panel We're going to build ourselves a “power test panel” for testing one or two motors at a time for workshop demonstrations and for mechanism prototyping. We've lashed this up a few times in the past, and its proved its usefulness. Now we'll do it in a tidier, more durable form. text/html 2022-02-03T14:08:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/testing_i2c_wiring?rev=1643897326&do=diff When using I2C sensors, we almost always have to run a cable from the RoboRIO to the sensor itself. Sometimes there's a problem with the wiring. This page has some techniques for testing and troubleshooting i2c wiring. The RoboRIO i2c connector looks like this: text/html 2022-02-03T14:06:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/the_i2c_bus?rev=1643897163&do=diff What's this I²C Thing? I²C, prounounced I-Squared-C, is short for the “Inter-Integrated-Circuit bus”. It was invented in 1982 by Philips, although the patent is now expired. More than you'll ever need to know is on the I²C Wikipedia page. Sometimes it is also known as the text/html 2020-02-27T04:42:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.eastbots.org/tutorials?rev=1582778543&do=diff A hopefully-expanding collection of info on useful topics. * Electrical Schematics - reading and drawing electrical circuit diagrams * Switches as Digital Inputs - fun with switches for for robot autonomous selection and etc. * Basic LED circuit - about light emitting diodes and calculating that resistor *