ArduinoNano-ESP8266

This is a little project I made to read a couple of temperatures.
The temps that have been read are posted to thingspeak and displayed on a lcd screen.

Installation

Pinning

Arduino	ESP8266	LCD	External 3V3	External 5V
GND	GND	GND	GND	GND
VIN	-	VIN	-	5V
D2	RXD	-	-	-
D3	TXD	-	-	-
D4	-	RS	-	-
D5	-	E	-	-
D6	-	D4	-	-
D7	-	D5	-	-
D8	-	D6	-	-
D9	-	D7	-	-
-	VCC	-	3V3	-
-	CH_PD	-	3V3	-

Note on LCD

• Wire the backlight GND to GND of external 5V
• Wire the backlight Vin to 1k Resistor to Vin
• Wire a 1k potentiometer between Vin and Contrast Voltage
• Wire RW to GND

Code changes

To connect to a WiFi spot put your SSID and password in the correct place.
Also your API key has to be inserted in the correct place.
If you have more channels or fields at thingspeak you have to change the GET request.

Note

You have to figure out for yourself how to wire your thermometers
Also you have to figure out the formula for the thermometer