Witty Pi 4 L3V7 Dummy load

Similar topics have been discussed in this forum. You can find them if you search "dummy load" in the forum.

For example:

https://www.uugear.com/forums/technial-support-discussion/witty-pi-4-mini-increase-dummy-load/#post-102

https://www.uugear.com/forums/technial-support-discussion/wittypi-4-mini-increase-the-dummy-load-via-software/#post-215

https://www.uugear.com/forums/technial-support-discussion/powerbank-wittypi-4-rasperry-pi-4/#post-42

Please always search the forum first, as requested by the forum rules.

I already went through those links and my issue was mot mentioned there are at all. I am talking about the pulse NOT being sent by your board.

thanks

@andrew-simpson17 that's because your power bank enters sleep mode, and it outputs no voltage. It is exactly the same issue mentioned in those topics.

Posted by: @andrew-simpson17

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keep tjhe usb power bank alive

This is what you want, and it was what other users want in their topics.

I understand.

thanks

Hi again 🙂

Seems the best approach is to use a capacitor.  Any you recommend and where is it connected to on your HAT. Sorry no knowledge of this. BUT, if this is out of your scope then just say so, I have no wish to cause agitation. Just do not want to damage the HAT

@andrew-simpson17 Usually we would recommend to connect a resistor to the +5V and GND in the GPIO header, or Vout and Catchode in the unpopulated header P3. The resistor value should be decided by experiment, because it depends on how much your power bank needs to keep alive.

Using a capacitor (instead of resistor) may or may not work, and you can also find out with experiment.