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openbuilds_cnc_machine_2018 [2019/12/09 22:26] – [Control Software] tellopenbuilds_cnc_machine_2018 [2021/08/02 22:37] (current) – [Electronics] tell
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 Based on the C-Beam Machine kit from Openbuilds.com: https://openbuildspartstore.com/openbuilds-c-beam-machine/ Based on the C-Beam Machine kit from Openbuilds.com: https://openbuildspartstore.com/openbuilds-c-beam-machine/
 +
 +{{ cbeam-openbuilds.jpg?200 }}
  
 Steve and Jeff assembled it following the video on https://www.youtube.com/watch?v=HVR8pABCHXI Steve and Jeff assembled it following the video on https://www.youtube.com/watch?v=HVR8pABCHXI
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 The interface board also has inputs that can be connected to limit and emergency-stop switches. The interface board also has inputs that can be connected to limit and emergency-stop switches.
  
-There is no schematic that I've found for the interface board, but the signals are connected as follows, according to silkscreen text on the board: +The interface uses the [[CNC Parallel Port Mapping | parallel "printer" port signals]] to control the stepper motors.
- +
-^ DB25 connector pin      ^ PC Parallel Printer Port Signal      ^ CNC control function         ^ +
-| 1                          C0                       unused     | +
-| 2                          D0                       X step     | +
-| 3                          D1                       X Direction +
-| 4                          D2                       Y Step       | +
-| 5                          D3                       Y Direction +
-| 6                          D4                       Z Step      | +
-| 7                          D5                       X Direction  (unused)    | +
-| 8                          D6                       A Step      (unused) +
-| 9                          D7                       A Direction   (unused)    | +
-| 10                      |    S6                       E-stop     | +
-| 11                      |    S7                       unused?      | +
-| 12                      |    S5                       (X axis limit)      | +
-| 13                      |    S4                       (Y axis limit)     | +
-| 14                      |    C1                       Common motion enable +
-| 15                      |    S3                       (Z axis limit)      | +
-| 16                      |    C2                       B Step      | +
-| 17                      |    C3                       B direction or Spindle Enable      | +
  
 The interface board is cabled to the parallel printer port on a PC.  The parallel port must either be on the motherboard or on a PCI expansion card; USB control is not possible (see the linuxCNC documentation). The interface board is cabled to the parallel printer port on a PC.  The parallel port must either be on the motherboard or on a PCI expansion card; USB control is not possible (see the linuxCNC documentation).
-If curious, more parallel port information is at https://en.wikipedia.org/wiki/Parallel_port 
  
  
openbuilds_cnc_machine_2018.1575948417.txt.gz · Last modified: 2019/12/09 22:26 by tell