User manual

Connection of the LEDs to D2-D7
Attention! LEDs must not be connected without dropping resistors. In this case it is
permitted due to the On resistors of the internal port FETs of approx. 30 Ohm.
Because the LEDs are placed between two ports, they actually work with a drop-
ping resistor of 60 Ohm. Depending on LED type and colour, an LED current be-
tween 15 mA and 30 mA at most occurs. This is still permitted.
The program
The website of this program uses check boxes as HTML elements. When you
upload the program and call the page of the board, you can see a number of box-
es that can be clicked. A check mark in a box means that the pin is high. No check
mark means low. You can now try out which pins need to be high and which ones
need to be low for all LEDs to be lit.