A simple circuit using ESP8266 as mcu to drive an i2c OLED SSD1306 display.

High-level recreation of the ThirstIQ Cap wiring diagram using an ESP32-WROOM-32 with AMS1117-3.3 regulated battery input, inline ON/OFF switch, four touch input headers on IO32/IO33/IO25/IO26, shared I2C OLED and RTC on IO21/IO22, UART debug/programming header on TXD0/RXD0, BOOT and RESET pushbuttons on IO0 and EN, buzzer on IO4, common 3V3/GND distribution, and PCB preparation for a 160 mm x 100 mm 4-layer layout. Layout intent includes clean 3.3 V power distribution, local decoupling for regulator and ESP32, accessible external headers/buttons, short clean BOOT/EN traces, shared I2C routing, touch-signal separation from noisy power and buzzer traces, and ESP32 antenna keepout.

Display Module 5 x 32 Dots OLED I²C #Arduino #MKR #OLED

A simple circuit using ESP8266 as mcu to drive an i2c OLED SSD1306 display.

USB-powered ESP32-WROOM-32 industrial vibration and temperature monitoring sensor node with ADXL345 SPI accelerometer, DS18B20 1-Wire temperature sensor, SSD1306 I2C OLED, LEDs, buzzer, relay header, and 3.3V AMS1117 power supply.

Breadboard-only schematic for an ESP32-based LC electromagnetic response visualizer using a handmade coil oscillator, LM339 comparator, GPIO27 frequency input, SSD1306 I2C OLED, and calibration button. No PCB layout is included.

I2C Display Module 0.96 Inch I2C SSD1306 OLED Display Module

I2C Display Module 0.96 Inch I2C SSD1306 OLED Display Module

I2C Display Module 0.96 Inch I2C SSD1306 OLED Display Module

I2C Display Module 0.96 Inch I2C SSD1306 OLED Display Module

Greenhouse controller with temperature and humidity control Input voltage 12v led voltage: 12v humidifier voltage: 5V Display: i2c 0.96 OLED display sensor: htu21d i2c

DIY handheld game console with EFM32TG11B120F, OLED 0.91" 128x32 I2C, 4 buttons (2 on each side), CR1220 battery connector, and USB Micro for charging. #Gaming #IoT #Microcontroller #EmbeddedSystems #EFM32

Compact 45 mm x 35 mm 4-layer agricultural IoT sensor node using an ATmega4808, AMS1117-3.3 linear regulation from 12 V input, RS-485 Modbus RTU half-duplex, local I2C sensors, 0.96 inch OLED, status LED, and a 12 V solenoid valve driver with top-side sensors/display and bottom-side MCU/power partitioning.