0.91 inch IIC OLED display module Description OLED display module with blue display color. OLED display, no need backlight, self-illumination.

MAX9814 CMA-4544PF-W High Performance Microphone AGC Amplifier Module Features – Supply voltage: 2.7v-5.5v @ 3mA current – Output: 2Vpp on

Description The OLED Driver IC is SSD1306, a single-chip CMOS OLED/PLED driver with controller for organic / polymer light emitting

Specifications • On-board passive buzzer • On-board 8550 triode drive • Can control with single-chip microcontroller IO directly • Working