ShiftOut question for Hannio flipDot Display

Hi - which Espruino board are you using? I'm pretty sure the 3rd pin won't be right (that's usually the 3.3v pin) - I think if you do that you could cause some serious damage!

I'd also make sure that GND of all boards is connected together - it can often be a big cause of problems if that isn't connected.

In terms of software, what you're doing looks good. The latch is often active low though, so I'd try:

    digitalWrite(LATCH_PIN,0);
    displayPixel(aff%5, Math.floor(aff/5)%7, compteur%2);
    digitalWrite(LATCH_PIN,1);

Or potentially the problem is that digitalPulse is asyncronous? It will be working while you are writing data using displayPixel. I'm not sure if that's your intention? If not:

    digitalPulse(LATCH_PIN,1,1);
    setTimeout(function() {
      displayPixel(aff%5, Math.floor(aff/5)%7, compteur%2);
    }, 2);

Might help?

Also, I believe there are some issues with shiftOut:

• It will shift out MSB first (you need to flip the byte first with E.reverseByte)
  
• By default it will only shift one bit. The docs are a bit cryptic (http://www.espruino.com/Reference#l__glo­bal_shiftOut) but you need repeat:8 in the options.
  
  

You could try this?

shiftOut(DATA_PIN, {clk:CLOCK_PIN, repeat:8}, [E.reverseByte(data)]);

Or, as @allObjects says, you can use the SPI object. But you'll still need reverseByte