Components

Peacefair single-phase AC energy monitoring module featuring optocoupled TTL UART output, measuring AC voltage (80-260V), current (0-100A via current transformer), active power, energy consumption, frequency, and power factor.

Pi Supply intelligent hardware UPS HAT for Raspberry Pi featuring an integrated 1820mAh LiPo battery, onboard MCU power management, real-time clock (RTC), solar charging input, and I2C telemetry (0x14).

Pimoroni multifunction Raspberry Pi add-on board integrating a dual H-bridge motor driver (DRV8833), 4-channel 5V analog inputs (ADS1015), 4 capacitive touch pads (CAP1204), 4 buffered 5V outputs, and status LEDs.

Pimoroni 8x8 matrix of 64 individually addressable surface-mount WS2812B RGB LEDs driven directly from Raspberry Pi PWM/DMA GPIO 18, providing 24-bit color depth for pixel art and status indicators.

QST Corporation multi-chip 3-axis magnetic sensor IC providing 16-bit high-resolution magnetic field measurements over I2C, designed as a modern replacement for the HMC5883L.

Generic doppler radar microwave motion sensor module operating at 3.18 GHz, capable of detecting movement through walls, glass, and plastic obstacles with a 360-degree detection angle.

RDA Microelectronics single-chip CMOS stereo FM broadcast radio receiver IC (50 MHz to 108 MHz) featuring integrated digital synthesizer, RDS/RBDS decoder, bass boost, and I2C control.

Texas Instruments (Burr-Brown) 800mA fixed +3.3V low-dropout (LDO) positive linear voltage regulator (up to 15V input, 1.2V dropout at 800mA) with internal current limiting and thermal overload protection in a SOT-223 package.

HopeRF ultra-long range transceiver module based on the Semtech SX1276 LoRa chip, operating in the 868 MHz / 915 MHz ISM band with +20 dBm output power and high interference immunity.

onsemi / Intersil 60V 30A N-channel logic-level MegaFET power MOSFET in a TO-220AB package with 47mΩ on-resistance at 5V VGS, historically popular in early Arduino and SparkFun motor driver tutorials.

Raspberry Pi dual-core 32-bit ARM Cortex-M0+ microcontroller IC running at 133MHz with 264KB SRAM, 8 Programmable I/O (PIO) state machines, USB 1.1, and QSPI interface.

Raspberry Pi second-generation dual-architecture microcontroller IC featuring dual 150MHz ARM Cortex-M33 or dual Hazard3 RISC-V cores, 520KB SRAM, 12 PIO state machines, TrustZone security, and QSPI interface.

Richtek single-phase 300kHz synchronous buck step-down PWM controller IC with dual N-channel MOSFET gate drivers and 0.8V reference for high-efficiency DC-DC converters.

Official Raspberry Pi Foundation multi-sensor HAT featuring an 8x8 RGB LED matrix, 5-button joystick, 9-DOF IMU (LSM9DS1), pressure/temp sensor (LPS25H), and humidity/temp sensor (HTS221) over I2C.

ABLIC 3-series or 4-series cell lithium-ion / lithium-polymer battery protection IC with high-accuracy overcharge, overdischarge, and overcurrent detection.

Generic TO-92 plastic package low-voltage high-current NPN silicon BJT rated for 25V collector-emitter voltage (VCEO) and 700 mA collector current (IC) for small motors and relays.

Micro Commercial Components / generic low-voltage high-current PNP silicon BJT in TO-92 package rated for -25V VCEO and -700mA collector current, complementary to S8050 in hobby starter kits.

Sensirion dual-channel NDIR (Non-Dispersive Infrared) optical gas sensor providing calibrated true CO2 concentration (400 to 10,000 ppm) alongside integrated temperature and humidity sensors.

Sensirion ultra-compact (101 mm³) photoacoustic NDIR CO2 sensor module delivering high-precision carbon dioxide readings (up to 40,000 ppm on SCD41) with temperature and humidity outputs.

YHDC non-invasive split-core current transformer clamp measuring 0 to 30A AC RMS without stripping live wiring, outputting 0 to 1V AC RMS voltage via internal burden resistor.

DFRobot SEN0244 analog Total Dissolved Solids (TDS) meter sensor kit measuring water purity from 0 to 1000 ppm for hydroponics, aquariums, and water quality testing with AC excitation probe.

TowerPro lightweight 9-gram analog micro servo motor providing ~180° rotation controlled via 50 Hz PWM position signals.

Sensirion multi-pixel metal-oxide (MOX) gas sensor measuring Total Volatile Organic Compounds (TVOC) and equivalent CO2 (eCO2) with internal calibration algorithms, dynamic baseline compensation, and I2C output.

Sensirion MOX multi-pixel digital VOC gas sensor generating a real-time VOC Index (0 to 500) for indoor air quality monitoring via Sensirion's VOC Index Algorithm over I2C (0x59).