Code not working in arduino nano

[MHD8441]

I have made the same design using laser cutting and assembled all the components as guided in the video, I have used arduino NANO instead of UNO and same sensor shield of NANO but when i have done uploading the code its not working. Please resolve and tell the solution.

Thank you

[Shubhembedded21]

I think the issue may be due to differences between Arduino UNO and Arduino Nano.
Please try the following steps:

1. In Arduino IDE, go to Tools → Board → Arduino Nano and under Processor, try both options:

ATmega328P

ATmega328P (Old Bootloader)

2. Check that the pin definitions in the code match the Nano’s pinout (e.g., sensors connected to A0–A7, servos to PWM pins like D3, D5, D6, D9, D10, D11).

3. If you are using a shield made for UNO, the pins may not align perfectly with Nano. In that case, use jumper wires instead of plugging the Nano directly.

4. Upload a simple Blink sketch to confirm your Nano is working properly. If Blink runs fine, the issue is likely pin mapping or shield compatibility.