Let's Control It

Hello
I have a tank in earth about 1m. There is one arduino that measures water tank level. The Tank level info then travels by wire to basement to another arduino that has a screen.
Now I would like to add there one ESP01 that would send the info to my mqtt server. Would two serial receivers be possible by that way?

The two arduinos now communicate by softwareserial 9600 speed. Well I need 3V voltage to the ESP also.

Why not replace the 2nd Arduino with LCD with a nodeMCU or Wemos D1 mini?
that way you have the LCD and WiFi on one device.

Rob Muller wrote: ↑21 Jan 2020, 13:25 Why not replace the 2nd Arduino with LCD with a nodeMCU or Wemos D1 mini?
that way you have the LCD and WiFi on one device.

I now have Arduino mini pro + 5110 lcd and a lot of level shifting resistors between them. That is a good idea to remove the current system and ESP8266 Nodemcu+5110 lcd. It does make the system a lot easier. I think I'll go to that route. Thanks!

Try with this fw. for Nokia5110

viewtopic.php?f=5&t=1685&p=34065#p32154