larryd:
Try 10K
No difference. Short blink on, then silent.
As before, with a loop like follows, sending data constantly, I can still only measure 2 millivolt on the data cable. ~120 mV on latch and ~1.3 on clock.
void loop() {
if (millis() - lastSwap > 2000) {
current = current == LOW ? HIGH : LOW;
lastSwap = millis();
Serial.println(current);
}
output(max_d0, current);
}
Output is ofc. HI/LO as expected.
LED stays off.