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--- 2019_leds [2020/11/11 22:34] – [Code] tell
+++ 2019_leds [2022/03/01 20:55] (current) – tell
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 ====== Parts for 2019 ======
-  * Addressable LED strip http://www.revrobotics.com/rev-11-1198/
+  * 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
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 In order to provide useful feedback to the drivers and spectators, the RoboRio will have to tell the arduino to change color or blink patterns.  If only a few patterns are needed, we can select these by changing the state of one or more Digitial Output wires from the rio, connected to digital inputs on the arduino.  If many complex patttern choices are needed, we'll change to a TTL or USB serial port for communication.
-The LED strip can easily use more +5v power than the arduino can provide, so we'll use a DC regulator board
+The LED strip can easily use more +5v power than the arduino can provide: its rated 3 amps per meter if all LEDs at full brightness.   So we'll use a DC regulator board
-to turn 12v from the PDP into plenty of +5v.  This is a similar function to what the VRM does.
+to turn 12v from the PDP into plenty of +5v current.  This is a similar function to what the VRM does.
 We'll mount the regulator board and some headers onto the arduino proto shield, so that it can all be plugged