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Tag: ESP-WROOM-02
The WEMOS D1 Esp-Wroom-02 a microcontroller development board with an ESP8266 WiFi chip. The board has a 128×64 (0.96 Inch) OLED screen with an SSD1306 controller, 18650 battery charging circuit and a directional button.
The circuit board comes with a 10 pin header that you can solder onto it. The connections will provide one analog input and five digital inputs/outputs with interrupt/PWM/I2C/one-wire support. The back of the board has a battery holder that supports flat top 18650 batteries. Other characteristics of the board are:
MCU: ESP-12E/F
Board size: 102x30x20mm
Voltage Input range: 5V-12V
Micro USB connection
Charge Current: 500 mA
Battery overcharging and over-discharging protection circuit
Like the other ESP8266 based boards, it can be programmed with the Arduino IDE.
Microcontrollers are suitable for controlling devices and reading sensors, but you can also play games on them. I recently came across such a game: a Star Wars game
With an ESP-WROOM-02 and an MQ-3 alcohol sensor you can easily make a portable alcohol detector. It will be a simpler implementation of the earlier project “Arduino breathalyzer:
One of the more obvious applications of a board like the ESP-Wroom-02 is using it as “WiFi jammer”. In the previous post I already wrote about the board
The “WEMOS D1 Esp-Wroom-02” that I got from VNG Systems is another microcontroller development board with an ESP8266 WiFi chip. This board also has an OLED screen, 18650 battery charging
