Hello all. I am looking for someone, that can design PCB board for me. PCB must be designed and exported to format, that accept manufacturer: https://jlcpcb.com/
There will be on the board:
Arduino Nano
LCD 20x4 with I2C
RFID reader RC522
buzzer (only 2 pin, not same as in scheme)
2x led or 2x relays
I don't know how to make connection between I2C and Arduino Nano without wires... Because I2C have pins in air Any suggestions?
I want I2C from back side and lcd from upper side.
I will pay you via PayPal.
Contact me for more informations with your offers at: martinius96@gmail.com
References are advantage.
Thanks a lot, Martin
larryd:
Those are 5v relays and you are powering them with 3.3v ???
The image is of a 5V relay but as it's Fritzing that doesn't mean this are the actual parts the OP has. Fair chance it's "something similar as the specific part was not in the library".
What is worse: they're powered from the Arduino's power pin. Connecting them to the 5V pin may not be any better - but that depends in part of the power supply, which the OP completely kept out of the picture.
Good luck, but be aware that this "someone at other place" will come up with the same questions, as the information provided is not enough to even start designing a PCB for your project.