ESP8266 Community Forum

- Sat Jun 06, 2015 10:21 am #19655 Hello,
I have an ESP8266 (ESP-01) with the Espduino firmware from Tuan. Using the example mqtt sketch, I can't get passed the while(!esp.ready()). I've checked my wiring. I'm using an Arduino Uno clone that has a 3.3V switch, and I've checked to make sure the pin output voltages are 3.3V, not 5V.

I've double checked my wiring, and as far as I can tell, everything is good. Is there some other troubleshooting steps I can take to figure this out?

Thanks!
Charlie

- Sat Jun 06, 2015 2:14 pm #19671 Try transposing your TX and RX connection. May not work but worth a try.