How to setup an ESP8266 with Arduino Mega 2560?
ESP8266 aka ESP-01. This one is manufactured by SEEEDstudio. It runs off 3.3v only; can be powered off arduino’s 3.3v pin or a separate supply with 3.3v and 500mA. Do not plug a 5V source to it. 1. break out board for ESP8266.
What kind of comms do I need for ESP8266?
ESP8266 and Arduino needs 2 serial comms; either 1 hardware 1 software or 2 hardware serial. Arduino Mega is preferred because of the 4x hardware serial. The nett effect is serial0 can be used for monitoring on PC USB, serial1 or2 or 3 can be used for comms between arduino and ESP8266 to issue the AT commands
How to send data from one ESP8266 NodeMCU board to multiple?
In this tutorial you’ll learn how to use ESP-NOW communication protocol to send data from one ESP8266 NodeMCU board to multiple ESP8266 boards (one-to-many configuration). The boards will be programmed using Arduino IDE.
Why is my code not uploaded to ESP8266?
If you see this error message in your IDE, the code did not get uploaded. You did not press the flash and reset button in the correct sequence. You did not connect TX and RX terminals properly. Please note that Tx should go to Tx and Rx should go to Rx. Also check other the wire connections too.
Where is the RESET pin on the ESP8266?
The GPIO0 setting now decides between run mode and flash mode. Connect a 10 KOhm resistor between 3.3V (Vcc) and GPIO0. This sets the ESP8266 into run mode. Now you may connect the GPIO0 directly to ground for flashing. The fourth is the “reset” pin. It should be on “high”, so put a 10 KOhm resistor between Vcc and reset pin.
How to connect and flash the esp8266.exe software?
Follow the same flash procedure as above using the FlashESP8266.exe software. Disconnect GPIO0 from ground, the resistor to Vcc should remain. Reset or power off / on your nodeMCU or WeMOS.It should be ready to use now. If everything has gone right you have a useable ESP Easy device now.