Have questions about FETS, transistors, measurement, power supplies, or anything else electrical?

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By XingxoYamchu
#96228 I'm new to connecting an Arduino Uno and an ESP, and I have a level shifter to connect them due to the voltage difference. I want to send the values from the Uno to a webpage via the ESP. Can I connect the port B1-4 and A1-4 to the digital ports on the boards, and use the software serial library to see the serial monitor?
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By rooppoorali
#96251 Are you using ESP-01 or NodeMCU? If you're using ESP-01, you can see here:

https://www.theengineeringprojects.com/ ... sp-01.html
https://www.electronicwings.com/arduino ... rduino-uno

In case you're using NodeMCU, this one will help: