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Topic: ShiftPWM support topic. Latest update: Schematics, high power LED's, LED strips (Read 83 times) previous topic - next topic

tsaG

#250
Jul 16, 2012, 07:03 pm Last Edit: Jul 16, 2012, 07:16 pm by tsaG Reason: 1
Ill give it a try. I tried getting the signal onto my osci. Its hard to trigger the signal when the arduino resets half every second :D

It looks quite good, I think (?)

1. Latch Pin
2. Clock Pin



EDIT: I didnt check the Serial Input pin. Ill check it later!

ematson5897

Those seem fine. If the capacitors don't solve the problem then try making a sketch that uses the shiftout command that sets all outputs to high to rule out a bad power supply

tsaG

The decoupling capacitor solved the problem. Thanks!

ematson5897

No problem. Decoupling caps are a frequently forgotten necessity

ematson5897

And elco, can I use other SPI devices while using shift(matrix)Pwm? Like ethernet shield and sd card etc.

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