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i recently decided to make up 5 Octolively LED kits.
After soldering 3 together and testing them I was very happy with the soldering and could see that everything was working perfectly.
Then I connected the 3 boards together using the male female connectors and plugged the DC input into the 1st board. I am using a plug with adjustable voltage from Maplins. The plug is set to 1amp and I have adjusted the voltage to 5v (which worked perfectly on each individual board when tested).
I then switched on the power and nothing. Now none of the boards work together or even individually. There is no observable evidence of any fried parts and it doesn't make sense to me that the boards worked fine on their own at the 5v 1 amp setting but then fried when plugged in together to the same power source at the same setting. Perhaps i'm being stupid here?
What are my best solutions?
-Can i simply replace the AT mega chip on each board and put the source code onto each chip manually? (not sure if the source code is available online but I am sure I can pull it off 1 of the other unassembled octolively kits i have and get the code off using an arduino).
What did do wrong and how should I power the units differently to avoid the same mistake again?
-does anyone recommend a plug I can buy that powers 5 of these things together well?
Would really appreciate some help!