0.66 Inch OLED Display Shield for D1 Mini (HW-699) Finger Print Sensor After power-on have about 0

After power-on have about 0

This XL6009 has two input pins for VCC and GND on the left side of the module

Long Press the front two buttons in the same time for 3 seconds

The ON/OFF Momentary type push switch is used in control circuits for controlling the contactor

0.66 Inch OLED Display Shield for D1 Mini (HW-699) Finger Print Sensor After power-on have about 0This is an HW 699 OLED Display Module for the D1 Mini Development Board. This display module is a 0. 66 inch mini display with high visibility in any light condition, dark or bright, and can be powered by a 3. 3V DC. This display shield has an onboard reset circuitry and can communicate via the serial I2C interface, which requires only two data pins to connect to the module. Features Fast response: This product is an OLED display with a faster