The purpose of this design is for learning how to play with the hardware and software of a IOT project, it is based on price competitive wifi module ESP8266.
Specification and Features:
Supports Wifi Board: ESP8266 NodeMCU (Not included)
Display : OLED Display Blue I2C 128×64 0.96″ (Not included)
Built-in DHT11 Temperature and Humidity Sensor
Built-in Potentiometer 10K
Relay Drives with External Supply (7-12V)
4 Independently Controlled Relays
Operating Voltage: 5V
Power Indication: Red LED
Relay Output Status: Blue LED CH1, CH2, CH3, CH4
Each relay output capacity: 220VAC / 10A
Three Terminal Output AC-DC Control (NO COM NC)
Single Pole Double Throw Relay Output (SPDT)
Relay current consumption at 5V is 72mA each when switched on
Back EMF protection
Mounting Holes: 3.40 x 2.80 Inch
How to Use?
Pluged your NodeMCU Microcontroller on the board. Then Program it.
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