Daisy chain the jumper to stop two PBR and an Ultraborg

Submitted by METTAUK on Wed, 11/30/2016 - 00:32

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Just tried updating cut button to stop an extra board plus an ultraborg to stop everything but it only stops one board or wont allow them to start?

Wired the kill switch as below which only stops one PBR.

Is there a correct way to daisy chain a kill switch?

Images: 
piborg's picture

piborg

Wed, 11/30/2016 - 12:47

Unfortunately this will not work quite as intended because the UltraBorg jumper is actually a power connection, not an EPO connection.

In other words:

  1. The jumper on the PicoBorg Reverses are just logic signals used as an EPO input.
    The motors will stop when it is disconnected and stay stopped until told to continue by software.
    It does not transmit any power.
  2. The jumper on the UltraBorg connects the servo 5V to the Raspberry Pi 5V.
    The servos will only remain powered off while it is disconnected, they will come back on as soon as it is connected again.
    It carries power for the servos.

The two PicoBorg Reverses can be connected to your switch in parallel perfectly fine.
See the first image below.

All three can share a single switch if the UltraBorg can be attached to a separate connection.
This will require a DPST or DPDT switch instead of your current SPST switch.
See the second image below.

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