It's summer and you're sweating and your hair's all frizzy and all you really want to know is why the weatherman said this morning that today's relative humidity would max out at a perfectly reasonable 42% when it feels more like 77%. Enter...

Waveshare 15423 - Raspberry Pi Expansion Board, 8-ch Relays The RPi Relay Board (B) is an expansion board with 8-channel relays for Raspberry Pi. It gives your Pi the ability to control high voltage products such as home appliances. Note:...

Waveshare 13992 - 1.5inch OLED display Module, 128x128 pixels, 16 gray scale, SPI/I2C interface This is an OLED display module, 1.5inch diagonal, 128x128 pixels, 16 gray scale, with embedded controller, communicating via SPI or I2C interface...

Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. The MAX31855K does everything for you, and can be easily interfaced with any microcontroller, even one without an analog input. This breakout board has the...

The MonkMakes Relay for micro:bit is a solid-state (no moving parts) relay that allows an output of a micro:bit to turn things on and off. This relay can be used to switch low voltage devices such as light bulbs, a motor, a small heating element or even...

Your power supply problems just got SOLVED! This little circuit board may look tiny but inside is a high efficiency DC/DC step-down converter which can output up to 3 Amp at 5V without the need of any heat-sink or forced cooling. (It does get a bit...

Adafruit seesaw is a near-universal converter framework which allows you to add add and extend hardware support to any I2C-capable microcontroller or microcomputer. Instead of getting separate I2C GPIO expanders, ADCs, PWM drivers, etc, seesaw can be...

Sew a little sparkle into your wearable project with an Adafruit LED Sequin. These are the kid-sister to the popular Flora NeoPixel, they only show a single color and they don't have digital control, but that makes them smaller easier to use for many...

These LED strips come in 5 meter reels. These strips are sold by the meter! If you buy 5 meters at a time, you'll get full reels with leads at both ends. If you buy less than 5m, you'll get a single 1-4m strip with or without leads.   1. Light...

"You see, wire telegraph is a kind of a very, very long cat.  You pull his tail in New York and his head is meowing in Los Angeles.  Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there...

"You see, wire telegraph is a kind of a very, very long cat.  You pull his tail in New York and his head is meowing in Los Angeles.  Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there...

This alcohol gas sensor detects the concentration of alcohol gas in the air and ouputs its reading as an analog voltage. The concentration sensing range of 0.04 mg/L to 4 mg/L is suitable for breathalysers (the legal limit of breath alcohol...

This breakout board is the simplest way to create a project with a single "momentary" capacitive touch sensor. No microcontroller is required here - just power with 1.8 to 5.5VDC and touch the pad to activate the sensor. When a capacitive load is...

Caution! The BBC micro:bit is NOT included. You can buy the BBC micro:bit here. Looking to do more with your BBC micro:bit? Unlock its potential with this pre-built version of Kitronik Edge Connector Breakout Board! This breakout board has...

Add some colour to your next coding project with our new Halo board for the BBC micro:bit. The Halo has 24 ZIP LEDs, which are individually addressable full colour LEDs. This means that each LED can display a huge spectrum of colours, allowing amazing...

Round and round and round they go! 24 ultra bright smart LED NeoPixels are arranged in a circle with 2.6" (66mm) outer diameter. The rings are 'chainable' - connect the output pin of one to the input pin of another. Use only one microcontroller pin to...

The Squid Button is a momentary action push switch with trailing leads that end in female header sockets that will fit over GPIO pins on a Raspberry Pi, Node MCU or Raspberry Pi Pico. To reduce the chance of accidental short-circuits when using the...

This is a 10 Pack of 560 Ohms Resistors. 560 Ohms ±5% 0.25W, 1/4W through hole resistor with flame retardant coating and a safety carbon film. Datasheet

Need some really bright LEDs? We are big fans of these white LEDs. They are very bright and have about 20degree LED beam. They go easily into a breadboard and will add that extra zing to your project. Pack of 25 white LEDs 5mm diameter Cool white...

RGB Pixels are digitally-controllable lights you can set to any color, or animate. Each RGB LED and controller chip is molded into a 'dot' of silicone. The dots are weatherproof and rugged. There are four flanges molded in so that you can 'push' them...