You got a Raspberry Pi Model B+ that you want to have work with some old kit or plate or breakout or something and it uses the classic 26-pinout. Very frustrating, it is...unless you have this ingenious 'downgrade' GPIO cable. It has a 40-pin socket...

After a long day out harvesting in the terminal block fields, we've returned with a veritable bounty of these very nice and compact 2.54mm/0.1" terminal blocks in a variety of sizes. Our harvest of terminal blocks is great news since nothing makes...

This cable is a little unusual, rather than having a USB A plug on one end, it has two Micro B USB connections! What is this for? It's for when you have a "USB On-The-Go (OTG)" device, and you want to plug in another USB device. For example, a Pi Zero or...

ON...off...ON...off...ON...off...ON...off...WE CAN'T STOP CLICKING THIS ON-OFF SWITCH! It has such a satisfying click and it works so well.  Plus, it's just about perfect for charging your Raspberry Pi - either Model B, A+, B+, or Pi...

Adafruit 2471 - HUZZAH ESP8266 Breakout Add Internet to your next project with an adorable, bite-sized WiFi microcontroller, at a price you like! The ESP8266 processor from Espressif is an 80 MHz microcontroller with a full WiFi front-end (both as...

This is a really nice power supply. It's a switching DC supply so its small and light and efficient. It is thin so it fits in power strips without blocking other outlets. The output is regulated so you'll get a steady 9V up to 1000mA (1 Amp) of current...

If you're looking to make a custom cable with any two of our USB or HDMI adapters, then you'll need to have these flex cables handy! Making custom cables has never been easier. Just grab one of these cables, then swap and switch any of the plug or...

Heat shrink is the duct tape of electronics which I guess makes this heat shrink the colorful and exciting duct tape they sell at craft stores. This heat shrink comes in six different colors - red, blue, green, yellow, white and the traditional...

These little cables are handy when programming or debugging a tiny board that uses 10-pin 1.27mm (0.05") pitch SWD programming connectors. We see these connectors often on ARM Cortex dev kits, and have a few handy in our ARM-dev box. We thought you may...

These displays are small, only about 1" diagonal, but very readable due to the high contrast of an OLED display. This display is made of 128x32 individual white OLED pixels, each one is turned on or off by the controller chip. Because the display makes...

Nothing makes a project harder to maintain than a lot of loose wiring. That's why we like to use terminal blocks whenever making PCB-to-Wire connections. These particular 3.5mm terminal blocks are our favorite: big enough for a range of wire gauges, easy...

MKR ZERO has an on-board SD connector with dedicated SPI interfaces (SPI1) that allows you to play with MUSIC files with no extra hardware! Watch out music makers, Arduino has released two libraries for your enjoyment: Arduino Sound library - a...

If you love DIY cable-rigging, then these HDMI adapters are right up your alley! Making custom HDMI cables has never been easier. Just grab one of our HDMI ribbon cables, then swap and switch any of our HDMI adapters on each end using the flex cable...

This is hot! Literally! Apply 5-12VDC and the stainless steel fibers in this heating fabric will warm up, creating a little heating pad. On one hand, it's just a gigantic resistor. On the other hand, it's flexible, light, and can be wrapped around a...

This RF adapter cable is super handy for anyone doing RF work. Often times, small electronics save space by having a pick-and-placeable u.FL connector (also called uFL, IPEX, IPAX, IPX, MHF, and AM). But most antennas have SMA or RP-SMA connectors on...

Make your own USB connections without slicing apart a USB cable and soldering those thin wires inside. These DIY "USB shells" are available in USB A plug, micro B, mini B and USB A socket. Each shell comes with a two-part snap plastic shell and a proper...

Adafruit 2895 - Non-Latching Mini Relay FeatherWing A Feather board without ambition is a Feather board without FeatherWings! This is the Non-Latching Mini Relay FeatherWing. It gives you power to control, and control over power. Put simply,...

If you're looking to make a custom cable with any two of Adafruit's HDMI adapters, then you'll need to have these flex cables handy! Making custom HDMI cables has never been easier. Just grab one of these cables, then swap and switch any of the...

The Adafruit Feather nRF52 Bluefruit is another easy-to-use all-in-one Bluetooth Low Energy board, with a native-Bluetooth chip, the nRF52832!  It's Adafruit's take on an 'all-in-one' Arduino-compatible + Bluetooth Low Energy with built in USB and...

Get the most out of your regulators, transistors and other TO-220 packaged chips by clipping on a heat-sink. Your transistor or regulator may advertise it can handle high currents but when multiplied by the drop voltage, the Wattage may be too high for...