Hey
I want to use a 16x relay board on my raspberry pi 2 B.
i have a 2.5A power supply.
The board is using 1A when all relays are on.
i am a little bit afraid to power them through a 5V GPIO pin.
do i need to have a separate power supply for this board?
Regards
Mark
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DougieLawson
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Re: high power usage
That should be OK as long as your power supply and microUSB cable are good enough.
I did that using an MCP32017 running at 5V0 as the GPIO controller for 16 5V0 coil relays.
I did that using an MCP32017 running at 5V0 as the GPIO controller for 16 5V0 coil relays.
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Criticising any questions is banned on this forum.
Any DMs sent on Twitter will be answered next month.
All non-medical doctors are on my foes list.
Re: high power usage
When everything is up and running measure the voltage across RPi board pins #4 (5V) and #6 (GND) with all the relays "on". If that voltage is in range your PS and power cable are adequate.