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Good evening,
To power my raspberry pi I am using a power bank,
to get it to work with the wittypi 4 mini I would need the latter as a dummy load current to deliver 60mah to me, as in the power bank's specifications it is written that it will not go into standby if it receives a 60mah input current.
I was wondering if it would be possible to increase the dummy load current via software so that I could keep the power bank on.
I thank you and look forward to your response.
Have a good evening.
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Posted : 11/10/2023 10:47 pm
The dummy load is using your Raspberry Pi as the load, and the MCU can only decide how frequently and for how long the load is connected to 5V.
There is no direct way to change the current but you may connect an additional resistor between the 5V and GND pins in Raspberry Pi's GPIO header, that will increase the current (for dummy load and also for normal usage).
Connecting a 82 Ohms resistor will increase about 61mA current. The smaller the resister is, the bigger current it will add, but more energy will be wasted, and the resistor itself should also be able to bear that power consumption.
There is already a similar topic discussed in this forum: https://www.uugear.com/forums/technial-support-discussion/witty-pi-4-mini-increase-dummy-load/#post-102
Posted : 12/10/2023 2:34 pm