- Joined Oct 29, 2009
I would hope it would have its own on board circuitry. But you might be on to something. I I raise the supply voltage the noise ratio becomes less and less.Do you have adequate power supply decoupling?
I was searching for a problem in an LED cube I'm prototyping. I thought it was timing or cross-talk pickup from long wires. After days of troubleshooting, I found out it was supply decoupling. I had stuck an electrolytic and a couple ceramic caps I had handy and that wasn't sufficient.
That was the first time I ever had a problem with power supply decoupling. But the cathode drivers can switch up to 300mA.
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by Luke James