"Wemos ESP-WROOM-02 WiFi modulis su ESP8266 + akumuliatoriaus 18650 lizdas

The development board integrates the ESP8266 and 18650 batteries. A standard 18650 battery can last up to 17 hours.

Caution: If the battery is reversed, the charging chip will be destroyed

Technical parameters:

- integrated 18650 battery charging system
- LED indicator - green - fully charged, red - charging in progress
- it can work and charge at the same time
- 1x power switch
- 1x SMT connector for sleep mode
- charging current: 0.5A
- output current: 1A
- overload protection
- 10 digital pins
- PWM, I2C support
- 1x analog input

Function:

- AD imput
- micro USB imput
- programmable LED (D0)
- AUTO PROGRAM.ESP8266 circuit (ESP-WROOM-02 S TELEC), equivalent to NodeMCU
- analog input (AD): Built-in dividing resistor (AD = 220K – ADC – 100K = GND)
- a SOLDER terminal is available for sleep mode
- compatible with Arduino and NodeMCU
- operation and charging are possible simultaneously
- 18650 charging circuit including 5V boost circuit with TP5410
- built-in overcharge protection
- LED: red = charging, green = full charging
- integrated 18650 battery charging and discharging system
- one switch controls whether the 18650 battery is powered or not
- SLEDOLED and SCL connected to pins D1 and D2
- 5 buttons are controlled by FLASH, RESET, D5, D6 and D7
- 5 digital pins can configure stand-alone writable / writable / interruptible / PWM / I2C / single wires
- operation and consistent NodeMCU, by adding a programmable LED, you can use GPIO16 to control, display the operating status of the 8266 and other functions.
- integrated OLED and five buttons, more convenient for development
- the design concept is based on the NodeMCU open source project and the development board integrates 18650 charging and discharging systems with charge and discharge protection
- at the same time, OLEDs and five directional buttons are integrated to facilitate development.