Quantity   Component name
1 × ESP8266
1 × 128x64 I2C OLED
2 × resistor 3k3 to 10k pullup resistors for SCL & SDA
1 × tantalium capacitor 2u2 to 4u7 directly soldered on module between Vcc and ground for stability
1 × resistor 10k pull-up resistor for the reset pin