We must have lit an LED on a breadboard hundreds of times ... allowing the output level to be set on a pin-by pin basis. Thus its maximum output can be as high as 16mA, but it can be wound back ...

Then the LED is connected to pin 2 using the resistor in series with it. In the setup() function we set the pin 8 as INPUT and pin 2 as OUTPUT. In the loop() function we read the value of the pin 8 ...

In my case the battery charger is used to charge a Lithium-ion battery pack. The BQ2000 has an open drain N-Channel LED output on pin 3 which can be used with a LED as a charge status indicator. The ...

A small ‘a’ in the Bus Pirate terminal takes the AUX/EI pin connection low, enabling the LED output. Two commands update the A6281 settings. The configuration command controls dot correction ...