Compact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, microcontroller, OLED display, and visual good/moderate/poor status indication.
Compact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, microcontroller, OLED display, and visual good/moderate/poor status indication.
Beginner-prototype solar bee monitor central controller using a plug-in 38-pin ESP32 NodeMCU-32, breakout sensor interfaces, switched camera and gate power, RS-485, monitored rails, and isolated safety-critical 2S charging/protection interfaces pending fully verified implementations.
Compact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, microcontroller, OLED display, and visual good/moderate/poor status indication.
Compact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, microcontroller, OLED display, and visual good/moderate/poor status indication.
Compact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, microcontroller, OLED display, and visual good/moderate/poor status indication.
Compact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, microcontroller, OLED display, and visual good/moderate/poor status indication.
Compact USB-powered desktop CO₂ air quality monitor using an NDIR CO₂ sensor, MCU, small display, and visual status indication, with schematic-first verification.
Compact USB-C powered desktop CO2 monitor using an RP2040, Sensirion SCD30 NDIR sensor, 3.3V I2C OLED header, and RGB air-quality indication, with native USB boot and SWD debug.
INA3221 current and voltage monitor interface for an HC-SR04 ultrasonic sensor, with 5V sensor power routed through a shunt and I2C output to a host MCU.
This is a LoRa soil monitor Reference Design. It uses a STM32L031G6U6S microcontroller and a RFM95W-915S2 LoRa transceiver, integrated with sensor interfacing and LED indicators. Communication occurs via USART and SPI. The system is powered using a battery.
#referenceDesign #simple-embedded #stm #template #reference-design
This is a LoRa soil monitor Reference Design. It uses a STM32L031G6U6S microcontroller and a RFM95W-915S2 LoRa transceiver, integrated with sensor interfacing and LED indicators. Communication occurs via USART and SPI. The system is powered using a battery.
#referenceDesign #simple-embedded #stm #template #reference-design
Use this template if you're planning to get your 1 to 2-layer board manufactured in JLCPCB. It has the via min/max and trace width constraints already baked as global rules. #project-template