PinoutHub The MQ2 is an analog gas sensor by Hanwei Electronics that detects flammable gases and smoke by measuring changes in electrical resistance across a heated tin dioxide element. It outputs both an analog voltage proportional to gas concentration and a digital threshold signal, making it straightforward to wire into any microcontroller project without needing a … Read more
The TMP36 is a low-voltage analog temperature sensor by Analog Devices, designed for use in electronics, embedded systems, and microcontroller-based projects. It measures temperature by outputting an analog voltage that scales linearly with degrees Celsius — no external calibration, no complex interface, just a voltage your ADC can read directly. Its wide supply range of … Read more
The DHT12 is a digital temperature and humidity sensor by Aosong Electronics — the same manufacturer behind the DHT11. It measures both environmental parameters and outputs calibrated digital data, but adds something the DHT11 never had: an I2C interface alongside the original single-wire protocol. That dual-interface design makes it a more flexible drop-in for projects … Read more
The BME280 is a digital environmental sensor that measures temperature, humidity, and barometric pressure simultaneously — three parameters, one IC, one I²C or SPI connection. It is factory-calibrated, runs on as little as 1.71V, and draws under 4µA when sampling all three sensors at 1Hz, making it as practical in a coin-cell-powered weather node as … Read more
The DHT11 is one of the most widely used digital temperature and humidity sensors in Arduino and electronics projects. It measures both temperature and relative humidity using a single digital output pin, and is commonly found in weather stations, HVAC systems, greenhouses, and home automation projects. What is DHT11? The DHT11 is a basic integrated … Read more
If you need to measure temperature across a long cable, in wet environments, or from a dozen different points using a single wire, the DS18B20 is the sensor built for that job. It is a digital temperature sensor that communicates over the 1-Wire protocol, and shows up everywhere from aquarium controllers and soil monitoring systems … Read more
The LM35 is one of the most popular analog temperature sensors used in Arduino and electronics projects. It measures temperature by outputting a voltage directly proportional to degrees Celsius, and is widely used in weather stations, industrial monitoring systems, and home automation projects. What is LM35? The LM35 is a precision integrated-circuit temperature sensor designed … Read more
The Raspberry Pi Pico 2 is a powerful microcontroller board based on the RP2350 chip. It brings improved performance, more memory, and enhanced peripherals while keeping the same familiar pin layout as the original Pico. It features 26 multifunction GPIO pins, supporting digital I/O, ADC, PWM, UART, SPI, and I2C interfaces. Note: This pinout guide … Read more
Unlike previous ESP32 variants, the ESP32-C6 introduces Wi-Fi 6, Bluetooth LE 5, and IEEE 802.15.4 (Zigbee/Thread) support, making it ideal for modern IoT ecosystems. It is powered by a RISC-V based processor, marking a shift from the traditional Xtensa cores used in earlier ESP32 boards. This change improves efficiency and aligns with newer open architectures. … Read more
The ESP32-S3 DevKitC-1 stands out from earlier ESP32 boards with its native USB support and enhanced AI/vector instructions, making it suitable for both IoT and edge-processing applications. Built around the Xtensa LX7 dual-core processor, it also offers a wide range of GPIO functions, including touch sensing and analog input. This guide provides a detailed look … Read more