NodeMcu ESP8266 CH340 V3 Lua Wifi Board

Specifications:

1. Onboard Module: ESP8266 wifi module; in AP mode it can connect with 5 Clients at the same time
2. Operating Way: cellphone carried on wifi module; cellphone and wifi module carried on the same router, and use the APP to control relay
3. Transmission Distance : 400m (max)
4. Relay : 5V,10A/250V AC 10A/30V DC
5. Baud Rate: 9600.
6. Diode effusion protection;
7. Short response time

Specifications:

1. Operating Voltage: 3.0-3.6V
2. 3DBi PCB-on-board antenna
3. Operating Current: 80mA
4. Low power 32-bit CPU, can also serve as the application processor
5. Up to 160MHz clock speed

Features :

1. LDR Light Sensor on board
2. WS2812 Led on board
3. 3x tactile buttons (1x in the Witty board and 2x in theCH340 board)
4. Micro USB connection for power and/or programming
5. Uses latest ESP-12F module with 4M flash and integrated antenna
6. Includes CH340G USB-to-UART programmer
7. Includes LDR (light dependent resistor a.k.a photoresistor) connected to ESP’s ADC pin
8. RGB LED connected to GPIO 12,13 and 15
9.  It supports 3 modes AP, STA, AP+STA

Specifications:

1. NodeMCU based on ESP-WROOM-32 module
2. ESP32 is a dual core 32-bit processor with built-in 2.4 GHz Wi-Fi and Bluetooth
3. Wi-Fi:802.11 b/g/n
4. Bluetooth V4.2 – Supports BLE and Classic Bluetooth
5. 520KByte RAM
6.  3.3V Operating voltage range
7. Maximum Operating Frequency : 240 MHz.
8. Analog Input Pins: 12 bit, 18 channels.
9. Based on ESP32 DEVKIT DOIT
10. 30 GPIO Version
11. 4MByte flash memory
12. In breadboard-friendly breakout
13. USB micro B for power and Serial communication, use to load program and serial debugging

Specifications:

1. Manufacturer: Ai-Thinker
2. Low power 32-bit CPU, can also serve the application processor
3. Support UART/SPI/I2C/I2S/PWM/ADC/DAC interfaces.
4. Built-in 520 KB SRAM, external 4MPSRAM
5. Supports audio input methods such as MIC and Line-in.
6. Support for firmware upgrade (FOTA)