Instructions

4 Two new icons will appear on the Raspbian desktop.
5 For most experiments, choose ScratchGPIO 7. The version ScratchGPIO 7plus is needed for different additional PCBs.
The pin assignment in ScratchGPIO
A GPIO-pin can be used as input or output. ScratchGPIO designates the GPIO-pins differently from any other programme and programming language
on the Raspberry Pi. The figure in the lower right shows the pins defined as inputs (7, 8, 10, 19, 21-24 and 26) as well as the pins defined as outputs
(11-13, 15, 16, 18). The pins numbered 29, 31-33, 35-38 and 40 can be used as inputs or outputs.
LEDs flash.
The experiment of the 2nd day makes two LEDs flash alternatingly. This is controlled via a programme in ScratchGPIO.
Components: 1 x plug board, 1 x LED red, 1 x LED yellow, 2 x 220-Ohm resistor, 3 x connec-
tion cables
Two LEDs flash at the Raspberry Pi.
The program
You do not need to type program code to program in Scratch. The blocks are simply assembled by drag and drop. The block pallet in the left
part of the Scratch window contains the available blocks, sorted by subject.