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by eatonj
Mon Sep 17, 2012 4:59 am
Forum: Random Chit-Chat
Topic: 12V supply with 4 Channel Relay Issue
Replies: 1
Views: 2929

12V supply with 4 Channel Relay Issue

I have a 4 Channel Relay shield connected to Pins 10, 11, 12, 13 and Gnd of a USBdroid. Works fine while connected to USB port on the Laptop or an External 9V (9.42V actually). However when I connect 12V (11.43V actually) all 4 relays activate instantly. Same 12V supplies power to relay board in all...