If you've ever said to yourself, "Gee, I wish I had four 12-bit DACs that came in a single package with the ability to save their settings to an EEPROM", well I have good news. The MCP4728 is the answer to your wishes! Within its little package, the MCP4728 has four 12-bit DACs for whatever voltage setting needs you may have. In addition, it has the ability to store the settings for the DACs to an internal EEPROM. Once saved to the...

This 4-wire cable is a little over 150mm / 6" long and fitted with JST-SH female 4-pin connectors on one end and premium female headers on the other. Compared with the chunkier JST-PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove. This cable can be used with Qwiic boards, to easily connect sensors and drivers to board with common 0.1" pin headers. When used with Qwiic the...

This 4-wire cable is a little over 100mm / 4" long and fitted with JST-SH female 4-pin connectors on both ends. Compared with the chunkier JST-PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove. This cable can be used with Qwiic boards, to easily connect sensors and drivers from one board to the other. The cables are made symmetrically so don't worry about which side goes...

If you're looking for the most compact li'l color display for a Raspberry Pi (most likely a Pi Zero) project, this might be just the thing you need! The Adafruit Mini PiTFT - 1.3" 240x240 Color TFT Add-on for Raspberry Pi is your little TFT pal, ready to snap onto any and all Raspberry Pi computers, to give you a little display. The Mini PiTFT comes with a full color 240x240 pixel IPS display with great visibility at all...

Wouldn't it be cool to drive a tiny OLED display, read a color sensor, or even just flash some LEDs directly from your computer?  Sure you can program an Arduino or Trinket to talk to these devices and your computer, but why can't your computer just talk to those devices and sensors itself?  Well, now your computer can talk to devices using the Adafruit MCP2221A breakout board! What can the MCP2221 chip do?...

Are you a maker in the midst of a STEMMA dilemma? This 200mm long 4-wire cable is a fantastic chimera-cable fitted with STEMMA QT / Sparkfun Qwiic JST SH on one end, and Grove / STEMMA JST PH  connectors on the other. Chunkier JST PH connectors come with 2mm pitch, and JST SH (also known as Qwiic) are 1mm pitch. Both have a nice latching feel, while being easy to insert and remove. Great for use with PyPortal, PyBadge, PyGamer,...

Most low cost soil sensors are resistive style, where there's two prongs and the sensor measures the conductivity between the two. These work OK at first, but eventually start to oxidize because of the exposed metal. Even if they're gold plated! The resistivity measurement goes up and up, so you constantly have to re-calibrate your code. Also, resistive measurements don't always work in loose soil. This design is superior with a...

If you're looking for the most compact li'l color display for a Raspberry Pi (most likely a Pi Zero) project, this might be just the thing you need! The Adafruit Mini PiTFT - 135x240 Color TFT Add-on for Raspberry Pi is your little TFT pal, ready to snap onto any and all Raspberry Pi computers, to give you a little display. The Mini PiTFT comes with a full color 240x135 pixel IPS display with great visibility at all angles. The TFT...

This 4-wire cable is 50mm / 1.9" long and fitted with JST SH female 4-pin connectors on both ends. Compared with the chunkier JST PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove. This cable can be used with Qwiic or STEMMA QT boards, to easily connect sensors and drivers from one board to the other. The cables are made symmetrically so don't worry about which side...

This cable will let you turn a JST PH 3-pin cable port into 3 individual wires with high-quality 0.1" male header plugs on the end. We're carrying these to match up with our Hallowing, for extending and connecting sensors or LEDs - and the wires are even color coded! We also stock a version with female socket headers on the end For more information about JST PH connectors, visit the JST website

This cable will let you turn a JST PH 4-pin cable port into 4 individual wires with high-quality 0.1" female sockets on the end. We're carrying these to match up with any of our boards with 'STEMMA' connectors on them such as the Hallowing or Trellis M4. Can also be used with any STEMMA breakouts! This one has socket pins, so it could be used to connet to wires or headers. The wires are even color coded: Black for GNDRed for...

This 4-wire cable is a little over 150mm / 6" long and fitted with JST-SH female 4-pin connectors on one end and premium Dupont male headers on the other. Compared with the chunkier JST-PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove. This cable can be used with Qwiic boards, to easily connect sensors and drivers to board with 0.1" socket headers or to solder-less...

This cable will let you turn a JST PH 3-pin cable socket into 3 individual tinned wires. These are great to match up with our JST 3-PH cables, for extending and connecting sensors or LEDs, and the wires are even color coded! We also carry the socket 'mating' version of this cable over here. For more information about JST PH connectors, visit the JST website

ST takes flight in this upcoming Feather board. The new STM32F405 Feather (video) that we designed runs CircuitPython at a blistering 168MHz – our fastest CircuitPython board ever! We put a STEMMA QT / Qwiic port on the end, so you can really easily plug and play I2C sensors. This Feather has lots of goodies: STM32F405 Cortex M4 with FPU and 1MB Flash, 168MHz speed192KB RAM total - 128 KB RAM for general usage + 64 KB program-only/cache...

This cable will let you turn a JST PH 4-pin cable port into 4 individual wires with high-quality 0.1" male header plugs on the end. We're carrying these to match up with any of our boards with 'STEMMA' connectors on them such as the Hallowing or Trellis M4. Can also be used with any STEMMA breakouts! This one has header pins, so it could be used to connect to socket header or breadboards. The wires are even color...

This 4-wire cable is a little over 150mm / 6" long and fitted with JST-PH female 4-pin connectors on each end. These types of JST cables are commonly found on small rechargeable battery packs, RC receivers and transmitters, tiny cameras, and other small electronic devices We're using these to connect to STEMMA boards, the connector is compact yet durable, stays connected even when moved around, but clicks easy to insert & remove. We...

Add motion, direction and orientation sensing to your Arduino project with this all-in-one 9 Degree of Freedom (9-DoF) sensor with sensors from ST. This little breakout contains two chips that sit side-by-side to provide 9 degrees of full motion data. The board includes an LSM6DS33 , a 6-DoF IMU accelerometer + gyro. The 3-axis accelerometer, can tell you which direction is down towards the Earth (by measuring gravity) or how fast the...

I mew, you mew we all mew for IMU! The MPU-6050 is what we call "an oldie but goodie" - this popular triple axis accelerometer plus gyro combo has been a staple of electronic projects for years, and we've finally gotten around to making a breakout for it! Inside are two sensors, one is a classic 3-axis accelerometer, which can tell you which direction is down towards the Earth (by measuring gravity). The other is a gyroscoe that...

This cable will make it super easy to use our plug-and-play STEMMA QT boards with boards like Circuit Playground. On one end you get a Qwiic / STEMMA QT connector (technically known as a JST SH 4-pin plug)  into 4 individual wires with grippy alligator clips. We're carrying these to match up with our boards or breakouts with 'STEMMA QT' connectors on them. This cable has a JST SH 4-pin on one side and alligator clips on the...

Machine learning has come to the 'edge' - small microcontrollers that can run a very miniature version of TensorFlow Lite to do ML computations.  But you don't need super complex hardware to start developing your own TensorFlow models! We've adapted our popular PyBadge board to add a microphone so you can dip your toes into machine learning waters. It does everything that the PyBadge does, and as we make more projects that...

This cable will let you turn a JST PH 3-pin cable port into 3 individual wires with high-quality 0.1" female header sockets on the end. We're carrying these to match up with our Hallowing, for extending and connecting sensors or LEDs - and the wires are even color coded! We also stock a version with male socket headers on the end For more information about JST PH connectors, visit the JST website

By popular request, we've upgraded our popular Trellis elastomer button kits to now have a PCB with full color NeoPixel support! You heard that right, no more single-color LEDs, you can now have any color you like under the fantastic rubbery button pads we sell. These 4x4 button pad boards are fully tile-able and communicate over I2C. With 5 address pins, you've got the ability to connect up to 32 together in any arrangement you like....

This 4-wire cable is a little over 200mm / 7.8" long and fitted with JST-SH female 4-pin connectors on both ends. Compared with the chunkier JST-PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove. This cable can be used with Qwiic or STEMMA QT boards, to easily connect sensors and drivers from one board to the other. The cables are made symmetrically so don't worry about...

Extend and expand your Circuit Playground projects with a bolt on TFT Gizmo that lets you add a lovely color display in a sturdy and reliable fashion. This PCB looks just like a round TFT breakout but has permanently affixed M3 standoffs that act as mechanical and electrical connections. Once attached you'll get a 1.54" 240x240 IPS display with backlight control, two 3-pin STEMMA connectors for attaching NeoPixel strips or servos, and a...

You can now add affordable heat-vision to your project and with an Adafruit MLX90640 Thermal Camera Breakout. This sensor contains a 24x32 array of IR thermal sensors. When connected to your microcontroller (or Raspberry Pi) it will return an array of 768 individual infrared temperature readings over I2C. It's like those fancy thermal cameras, but compact and simple enough for easy integration. This version has a wide 110°x70° field...

This cable is a little over 100mm / 4" long and fitted with JST-PH 3-pin connectors on either end.  We dig the solid and compact nature of these connectors and the latch that keeps the cable from coming apart easily. We're carrying these to match up with our STEMMA boards and sensors that have 3-pin connections - and the wires are even color coded! Red is power, ground is black and signal is white. The 3 wires are 22AWG...

Behold, the ST LSM6DSOX: The latest in a long line of  quality Accelerometer+Gyroscope 6-DOF IMUs from ST. This IMU sensor has 6 degrees of freedom - 3 degrees each of linear acceleration and angular velocity at varying rates within a respectable range. For the accelerometer: ±2/±4/±8/±16 g at 1.6 Hz to 6.7KHz update rate. For the gyroscope: ±125/±250/±500/±1000/±2000 dps at...

Hey, have you heard the good news? With Adafruit STEMMA boards you can easily and safely plug sensors and devices together, like this Adafruit STEMMA Speaker - Plug and Play Audio Amplifier . Like the name implies, it's got a class D audio amplifier on board, and our favorite little 1 Watt 8 ohm speaker. Connecting it up is easy - you only need ground, 3 to 5V power, and audio signal. The audio signal does not need to be AC coupled, we do...

STEMMA plug-and-play parts make your next project soldering-free! This is the STEMMA Non-Latching Mini Relay . It gives you power to control, and control over power. Put simply, you can now turn on and off lamps, fans, solenoids, and other small appliances that run on up to 250VAC or DC power using any microcontroller or microcomputer, with ease. No worrying about flyback diodes, level shifting, pin protection. The STEMMA board takes...

This miniature GPS breakout is only 1" x 1" (~ 25mm x 25mm) but houses a complete GPS/GNSS solution with both I2C and UART interfaces. There's even an antenna on top so it's plug and play! Support for GPS, GLONASS, GALILEO, QZSS-165 dBm sensitivity, up to 10 Hz updatesUp to 210 PRN channels with 99 search channels and 33 simultaneous tracking channels5V friendly design and only 30mA current drawBreadboard-able, with 4 mounting...

Do you know which way the wind blows? You will now, with this triple-axis accelerometer/magnetometer compass module. Inside are two sensors, one is a classic 3-axis accelerometer, which can tell you which direction is down towards the Earth (by measuring gravity). The other is a magnetometer that can sense where the strongest magnetic force is coming from, generally used to detect magnetic north. By combining this data you can then orient your...

Little clicky switches are standard input "buttons" on electronic projects. These are just like our Colorful Round Tactile Button Switch Assortment, but already assembled onto a PCB - they even have a pull-up resistor installed! The pins are normally open (disconnected) and when the button is pressed they are momentarily closed. Each button comes with a candy-colored round cap snapped on. You get one of each color-- blue,...

Sense the magnetic fields that surround us with this handy triple-axis magnetometer (compass) module. Magnetometers can sense where the strongest magnetic force is coming from, generally used to detect magnetic north, but can also be used for measuring magnetic fields. This sensor tends to be paired with a 6-DoF (degree of freedom) accelerometer/gyroscope to create a 9-DoF inertial measurement unit that can detect its orientation in real-space...

Extend and expand your Circuit Playground projects with a bolt on E-Ink Gizmo that lets you add a lovely tri-color e-Ink display in a sturdy and reliable fashion. This PCB looks just like a round E-Ink breakout but has permanently affixed M3 standoffs that act as mechanical and electrical connections. Chances are you've seen one of those new-fangled 'e-readers' like the Kindle or Nook. They have gigantic electronic paper...

Totally 220 pieces, this  JST-PH Connector Kit  is a must-have for your workstation. You'll have enough sockets and plugs to fuel your maker tendencies for days on end! These connectors are really common in electronics, we use the 2 pin ones for our batteries and battery packs. The 3 pin and 4 pin are used for STEMMA connectors. The 4 pin size is even compatible with Grove! They are large enough you can crimp without...

What fits in your pocket, is fully Open Source, and can run CircuitPython, MakeCode Arcade or Arduino games you write yourself? That's right, it's the Adafruit PyGamer! We wanted to make an entry-level gaming handheld for DIY gaming, and maybe a little retro-emulation. It's not the fastest and best of everything but it is an all-in-one dev board with a lot of possibilities! The PyGamer is powered by our favorite chip, the...

This cable will let you turn a JST PH 3-pin cable socket into 4 individual tinned wires. These are great to match up with our JST 4-PH cables, for extending and connecting sensors or LEDs, and the wires are even color coded! Black for GNDRed for V+White for SDAGreen for SCL Even though this is a JST PH connector, it will fit into a Seeed Grove connector and have the right matching wires as well. We also carry the socket 'mating' version...

The VCNL4040 is a handy two-in-one sensor, with a proximity sensor that works from 0 to 200mm (about 7.5 inches) and light sensor with range of 0.0125 to 6553 lux. We've all been there. That thing is  close but  how close? When you need to measure a small distance with reasonable accuracy, such as the rough height of particularly calm bumble bee, the VCNL4040 Proximity Sensor from Vishay can do that for you. If perchance you also...

If you're a person like me that gets exhausted turning knobs all day, the DS3502 is just the ticket to calm all your knob-turning related troubles. Instead of having to  turn knobs  with your HANDS like an ANIMAL  the DS3502 I2C Digital Potentiometer allows you to let your microcontroller adjust the resistance for you! Now you can free your hands to spin your fidget spinner or or eat a slice of pizza while you're on the...

Sometimes you need to sense pressure in a damp or caustic environment. And sometimes you need to know the relative changes in pressure as well as the absolute pressure. For the times you need to do both (or either), the LPS33HW is the pressure sensor for you. Combining protection from water intrusion with support for high precision relative and absolute measurements, this sensor will do what you need. With drivers for CircuitPython, Arduino, and...

The SparkFun Qwiic or Stemma QT SHIM for Raspberry Pi is a small, easily removable breakout that easily adds a 4-pin JST SH pin (Stemma QT or Qwiic) connector to your Raspberry Pi. The SHIM design allows you to plug directly to the Pi's I2C bus with no soldering required, and the thin PCB design allows for it to be sandwiched on your Pi GPIO with other bonnets or HATs! The Qwiic SHIM works great if you want to add a Qwiic connector to your...

Peep dis! Have you always wanted to have another pair of eyes on the back of your head? Or outfit your costume with big beautiful orbs? The MONSTER M4SK is like the Hallowing but twice as good, with two gorgeous 240x240 pixel IPS TFT displays, driven by a 120MHZ Cortex M4 processor that can pump out those pixels super fast. You'll get the same quality display as our Raspberry Pi Eyes kit but without needing to tote around a full Linux...

This cable will let you turn a JST PH 3-pin cable port into 3 individual wires with grippy mini alligator clips. We're carrying these to match up with any of our boards or breakouts with 3-pin 'STEMMA' connectors on them such as the HalloWing or NeoTrellis M4. This cable has a JST PH 3-pin on one side and alligator clips on the other, so it could be used to connect to wires or pads like that on the Circuit Playground or...

What's the size of a credit card and can run CircuitPython, MakeCode Arcade or Arduino? That's right, its the Adafruit PyBadge! We wanted to see how much we could cram into a ​3 3⁄8 × ​2 1⁄8 inch rounded rectangle, to make an all-in-one dev board with a lot of possibilities, and this is what we came up with. The PyBadge is a compact board, like we said, it's credit card sized. It's powered by our favorite...

The Grove Shield FeatherWing for Particle Mesh and all Feathers is an add-under for any Particle Mesh or Feather board, so that you can easily interface with Seeed's huge collection of Grove sensors. Now you can have full range of hundreds of Grove modules with Particle Mesh along with our Feather line! Working with Grove requires no soldering. Just plug the sensors, actuators, or displays into this shield via a Grove cable (not included),...

Add motion and orientation sensing to your Arduino project with this affordable 6 Degree of Freedom (6-DoF) sensor with sensors from ST. The board includes an LSM6DS33 , a 6-DoF IMU accelerometer + gyro. The 3-axis accelerometer, can tell you which direction is down towards the Earth (by measuring gravity) or how fast the board is accelerating in 3D space. The 3-axis gyroscope that can measure spin and twist. This chip isn't the newest...

Plug in and glow, this Adafruit NeoPixel LED Strip with JST PH Connector has 30 total LEDs in a "60 LED per meter" spacing , and is 0.5 meters long, in classy Adafruit Black. Its not too long, but has lots of glowing action. Perfect for use with a Hallowing, or a custom design with a JST PH socket. The strips come in a 0.5 meter reel with three 100mm long wires connected to a JST PH 3-pin plug . The other end is sealed. The wires are...

This is a STEMMA I2C breakout for the Infineon OPTIGA TRUST M SLS 32AIA. OPTIGA Trust M is the next generation of Trust X. OPTIGA Trust M brings RSA 1K/2K + ECC256/384. A crypto authentication chip much like the ATECC608 STEMMA we put into the shop last week, but with: ECC NIST P256/P384, SHA-256, TRNG, DRNG, RSA® 1024/2048 and 4.5K of user memory. This chip can store your private keys securely, as well as generate true random...

What's the size of a credit card and can run CircuitPython, MakeCode Arcade or Arduino even when you're on a budget? That's right, it's the  Adafruit PyBadge LC!  We wanted to see how much we could cram into a ​3 3⁄8 × ​2 1⁄8 inch rounded rectangle, to make an all-in-one dev board with a lot of possibilities, and this is what we came up with. The PyBadge is a compact board, like we said, it's...

The TLV493D 3-axis magnetometer is a great little sensor for detecting magnets in 3D . In fact, the manufacturer Infineon suggests it could be used to make a joystick! You could also use it for other cool things like detecting objects with magnets attached, like the lid of a box, or maybe a statue that unlocks your secret lair when placed on your mantle? The TLD493D excels at measuring nearby magnetic fields in three dimensions. It's not...

The Adafruit PCT2075 Temperature Sensor is a 'code compatible' drop in replacement for a very common I2C temperature sensor, the LM75. Compared to the LM75, however, the 11-bit ADC in the PCT2075 provides more precise measurements when compared to the LM75's 9-bit ADC. Additionally because the PCT2075 allows the address pins to work in three states (high, low, floating), you can have 27 PCT2075s on the same bus as opposed to only 8...

This is Hallowing..this is Hallowing... Hallowing! Hallowing!  Following up on 2018's most-successful-skull-shaped development board, we UPPED our -skull-shaped development board game, and re-spinned (re-spun?) the HalloWing M0 into the HalloWing M4 with MORE of everything that makes this the spoooookiest dev board. New! For October 2019, we're got limited edition halloween-orange HallowingM4's - Same exact electronics and...

If you're a DIY enthusiast who likes to  micro -manage your project's connections, here is a 10-pack of some  micro  JST SH connectors! They're solid plastic with 4 x 1mm pitch through-hole mounting tabs. In an SMT line you can just paste over the through holes and the pads will solder in place. This connector can be used with Qwiic boards and cables, to easily connect sensors and drivers from one board...

You've got secrets, and you want to keep them safe? Most microcontrollers are not designed to protect against snoopers, but a crypto-authentication chip can be used to lock away private keys securely. Once the private key is saved inside, it can't be read out, all you can do is send it challenge-response queries. That means that even if someone gets hold of your hardware and can read back the firmware, they wont be able to extract the...

This board makes it easy for you to interface your Binho Nova host adapter with up to 4 strings of Qwiic / Stemma QT I2C devices. It also breaks out all of the pins to a series of headers for convenient jumping to other circuits or perhaps your logic analyzer to monitor everything while you develop and debug. This is the easiest way to use the Binho Nova with our wide range of Stemma QT sensors and devices, with plug-n-play simplicity. This...

The MSA301 is a super small and low cost triple-axis accelerometer . It's inexpensive, but has just about every 'extra' you'd want in an accelerometer: Three axis sensing, 14-bit resolution±2g/±4g/±8g/±16g selectable scalingI2C interface on fixed I2C address 0x26Interrupt outputMultiple data rate options 1 Hz to 500 HzAs low as 2uA current draw in low power mode (just the chip itself, not including any...

This cable will let you turn a JST PH 4-pin cable port into 4 individual wires with grippy mini alligator clips. We're carrying these to match up with any of our boards or breakouts with 'STEMMA' connectors on them such as the HalloWing or NeoTrellis M4. Can also be used with any STEMMA breakouts! This cable has a JST PH 4-pin on one side and alligator clips on the other, so it could be used to connect to wires or pads...

This tiny little servo can rotate approximately 180 degrees (90 in each direction), and works just like the standard kinds you're used to but  smaller . You can use any servo code, hardware or library to control these servos. Good for beginners who want to make stuff move without building a motor controller with feedback & gear box, especially since it will fit in small places. Of course, it's not nearly as strong as a standard...

Designing boards with plug-n-play connectivity is a snap, with STEMMA connectors. Here's a pack of 10 of our favorite 2mm pitch connector - the JST PH 4 pin. These are the horizontal style. You can use these with any of our JST PH 4 / STEMMA cables. They're not STEMMA QT compatible (those use the smaller JST SH). However, you  can  fit Seeed Grove connectors into JST PH which is pretty handy. We also carry these connectors...

Designing boards with plug-n-play connectivity is a snap, with STEMMA connectors. Here's a pack of 10 of our favorite 2mm pitch connector - the JST PH 4 pin. These are the vertical style. You can use these with any of our JST PH 4 / STEMMA cables. They're not STEMMA QT compatible (those use the smaller JST SH). However, you can fit Seeed Grove connectors into JST PH which is pretty handy. We also carry these connectors in right angle...

Designing boards with plug-n-play connectivity is a snap, with STEMMA connectors. Here's a pack of 10 of our favorite 2mm pitch connector - the JST PH 3 pin. These are the vertical style. You can use these with any of our JST PH 3 / STEMMA cables. They're not STEMMA QT compatible (those use the smaller JST SH).  We also carry these connectors in horizontal style. For more information about JST PH connectors, visit the JST...

If you're a DIY enthusiast who likes to  micro -manage your project's connections, here is a 10-pack of some  micro  JST SH connectors! They're solid plastic with 4 x 1mm pitch through-hole mounting tabs. In an SMT line you can just paste over the through holes and the pads will solder in place. These connectors can be used with Qwiic boards and cables to easily connect sensors and drivers from one...

Designing boards with plug-n-play connectivity is a snap, with STEMMA connectors. Here's a pack of 10 of our favorite 2mm pitch connector - the JST PH 3 pin. These are the horizontal style. You can use these with any of our JST PH 3 / STEMMA cables. They're not STEMMA QT compatible (those use the smaller JST SH).  We also carry these connectors in vertical style. For more information about JST PH connectors, visit the JST website

We got a big ol' blender and tossed in an ItsyBitsy M4, two NeoTrellis boards and an electret mic amp - turned on the 'mix' button and out came the NeoTrellis M4 - a super fun dev board for anyone who likes to squish buttons, see pretty lights and maybe make a tune or two. The NeoTrellis M4 is an all-in-one USB + NeoPixel + Elastomer + Audio board. It's powered by our new favoritest-chip-in-the-world, the SAMD51, a Cortex M4 core...

The Grove Shield FeatherWing for Particle Mesh and all Feathers is an add-under for many Particle Mesh or Feather board, so that you can easily interface with Seeed's huge collection of Grove sensors. Now you can have full range of hundreds of Grove modules with Particle Mesh along with our Feather line! Working with Grove requires no soldering. Just plug the sensors, actuators, or displays into this shield via a Grove cable (not included),...

New from Adafruit, we are taking our most popular sensors and making them easier than ever to use! This is the Adafruit STEMMA TSL2561 which takes our favorite lux sensor and gives you two ways to play: you can use alligator clips to connect the sensor to your Flora, Gemma or Circuit Playground, or plug-n-play with STEMMA cables or Seeed Grove cables Each STEMMA board has level-shifting and protection circuitry on the power supply and data lines...