Welcome to the Arduino Uno Pin Diagram Explanation user manual, your ultimate resource for understanding and using your new product. Compatible Accessories This section lists compatible accessories ...

Pin 2 on the Arduino schematic is really GPIO2 on the NINA, therefore it should not be labeled GPIO34. This is confirmed by the fact that the pin numbering on the Arduino schematic matches the pin ...

Fig. 2: Circuit diagram of Arduino based frequency generator. Potmeter VR1 connected to pin 3 of LCD1 is used for controlling the contrast of LCD1. VR2 connected to analogue input A0 pin of the ...