I'm working on an adafruit sound fx board. The sounds are generated when a pin is connected to ground. I was planning on triggering it remotely by using a Wemos. So my problem is converting the high from the LED on the wemos to produce a low/ground to the sound board. The adafruit page showing an …

need help with 74HC04 chip to invert high to low

Grumpy_Mike September 30, 2016, 7:40pm 13

OK you have one but what is a wemos and how are you wiring it up?

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