CircuitPython / Other Devices

They're not displays or sensors, but we have drivers for them too! From shift registers and GPIO expander to thermal printers – we've got a bunch of CircuitPython-compatible Adafruit devices for you to choose from! Every item in this category has a CircuitPython driver ready to go, for fast and easy usage. With a wide and growing range of chips and sensors, this will be a great place to continue checking for more fun accessories for your CircuitPython projects.

MicroSD card breakout board+

PRODUCT ID: 254

Not just a simple breakout board, this microSD adapter goes the extra mile - designed for ease of use. Onboard 5v->3v regulator provides 150mA for...

Not just a simple breakout board, this microSD adapter goes the extra mile - designed for ease of use. Onboard 5v->3v regulator provides 150mA for power-hungry cards3v level shifting means you can use this with ease on either 3v or 5v systemsUses a proper level shifting chip, not resistors: less problems, and faster read/write accessUse 3 or 4 digital pins to read and write 2Gb+ of storage!Activity LED lights up when the SD card is being read...

$7.50

IN STOCK

Adafruit DS3231 Precision RTC Breakout

PRODUCT ID: 3013

The datasheet for the DS3231 explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does...

The datasheet for the DS3231 explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does exactly what it says on the tin! This Real Time Clock (RTC) is the most precise you can get in a small, low power package. Most RTCs use an external 32kHz timing crystal that is used to keep time with low current draw. And that's all well and good, but those crystals have slight drift, particularly...

$13.95

OUT OF STOCK

TCA9548A I2C Multiplexer

PRODUCT ID: 2717

You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your Arduino when you realize "Uh oh, this chip...

You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your Arduino when you realize "Uh oh, this chip has a fixed I2C address, and from what I know about I2C, you cannot have two devices with the same address on the same SDA/SCL pins!" Are you out of luck? You would be, if you didn't have this ultra-cool TCA9548A 1-to-8 I2C multiplexer ! Finally, a way to get up to 8 same-address I2C devices...

$6.95

OUT OF STOCK

Adafruit PCF8523 Real Time Clock Assembled Breakout Board

PRODUCT ID: 3295

This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if...

This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power & logic! Works great with an Arduino using our RTC library, with CircuitPython or with a Raspberry Pi (or similar single...

$4.95

IN STOCK

MCP4725 Breakout Board - 12-Bit DAC w/I2C Interface

PRODUCT ID: 935

Your microcontroller probably has an ADC (analog -> digital converter) but does it have a DAC (digital -> analog converter)??? Now it can! This...

Your microcontroller probably has an ADC (analog -> digital converter) but does it have a DAC (digital -> analog converter)??? Now it can! This breakout board features the easy-to-use MCP4725 12-bit DAC. Control it via I2C and send it the value you want it to output, and the VOUT pin will have it. Great for audio / analog projects, such as when you can't use PWM but need a sine wave or adjustable bias point. We break out the ADDR/A0...

$4.95

IN STOCK

Adafruit RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz - RadioFruit

PRODUCT ID: 3072

"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. ...

"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. The only difference is that there is no cat." Sending data over long distances is like magic, and now you can be a magician with this range of powerful and easy-to-use radio...

$19.95

12 IN STOCK

Adafruit DS1307 Real Time Clock Assembled Breakout Board

PRODUCT ID: 3296

This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if...

This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. The DS1307 is the most popular RTC - but it requires 5V power to work (although we've used it with 5V power and 3.3V logic successfully) Works great with an Arduino using our RTC library or with a...

$7.50

OUT OF STOCK

Adafruit DRV2605L Haptic Motor Controller

PRODUCT ID: 2305

The DRV2605 from TI is a fancy little motor driver. Rather than controlling a stepper motor or DC motor, its designed specifically for controlling...

The DRV2605 from TI is a fancy little motor driver. Rather than controlling a stepper motor or DC motor, its designed specifically for controlling haptic motors - buzzers and vibration motors. Normally one would just turn those kinds of motors on and off, but this driver has the ability to have various effects when driving a vibe motor. For example, ramping the vibration level up and down, 'click' effects, different buzzer levels, or...

$7.95

IN STOCK

MCP3008 - 8-Channel 10-Bit ADC With SPI Interface

PRODUCT ID: 856

Need to add analog inputs? This chip will add 8 channels of 10-bit analog input to your microcontroller or microcomputer project. It's super easy...

Need to add analog inputs? This chip will add 8 channels of 10-bit analog input to your microcontroller or microcomputer project. It's super easy to use, and uses SPI so only 4 pins are required. We chose this chip as a great accompaniment to the Raspberry Pi computer, because its fun to have analog inputs but the Pi does not have an ADC. We have a tutorial and code example for wiring this chip to a Raspberry Pi

$3.75

IN STOCK

Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface - PCA9685

PRODUCT ID: 815

You want to make a cool robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of...

You want to make a cool robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that your microcontroller has a limited number of PWM outputs! What now? You could give up OR you could just get this handy PWM and Servo driver breakout. When we saw this chip, we quickly realized what an excellent add-on this would be. Using only two...

$14.95

IN STOCK

Stereo 20W Class D Audio Amplifier - MAX9744

PRODUCT ID: 1752

Pump up the volume with this 20W stereo amplifier! This slim little board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm...

Pump up the volume with this 20W stereo amplifier! This slim little board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each. Power it with 5-12VDC using the onboard DC power jack and plug stereo line level into the 3.5mm stereo headphone jack and jam out with ease. Since it's class D, its completely cool-running, no heat sinks are required and it's extremely efficient - up to 93%...

$19.95

OUT OF STOCK

Super-bright 5mm IR LED - 940nm

PRODUCT ID: 387

Infrared LEDs are used for remote controls (they're the little LED in the part you point at your TV) and 'night-vision' cameras, and...

Infrared LEDs are used for remote controls (they're the little LED in the part you point at your TV) and 'night-vision' cameras, and these little blue guys are high powered ones! They are 940nm wavelength, which is what nearly all devices listen to. They're 20 degree beamwidth, and work great for any kind of remote control application. We used one of these to make a camera control footswitch/intervalometer. These are the same...

$0.75

IN STOCK

Adafruit Si5351A Clock Generator Breakout Board - 8KHz to 160MHz

PRODUCT ID: 2045

Never hunt around for another crystal again, with the Si5351A clock generator breakout from Adafruit! This chip has a precision 25MHz crystal...

Never hunt around for another crystal again, with the Si5351A clock generator breakout from Adafruit! This chip has a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from <8KHz up to 150+ MHz. The Si5351A clock generator is an I2C controller clock generator. It uses the onboard precision clock to drive multiple PLL's and clock dividers using I2C instructions. By setting up the...

$7.95

IN STOCK

Adafruit RFM69HCW Transceiver Radio Breakout - 868 or 915 MHz - RadioFruit

PRODUCT ID: 3070

"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. ...

$9.95

IN STOCK

Adafruit NeoTrellis RGB Driver PCB for 4x4 Keypad

PRODUCT ID: 3954

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...

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....

$12.50

36 IN STOCK

Adafruit I2C Non-Volatile FRAM Breakout - 256Kbit / 32KByte

PRODUCT ID: 1895

FRAM, or Ferroelectric Ram, is the coolest new data storage method that all the fashion magazines are talking about. Oh wait, no that's quilted...

FRAM, or Ferroelectric Ram, is the coolest new data storage method that all the fashion magazines are talking about. Oh wait, no that's quilted handbags. But FRAM is pretty damn cool too! It's similar to Dynamic random-access memory, only with a ferroelectric layer instead of a dielectric layer. This gives it stable handling (the bytes you write are non-volatile) with dynamic responsiveness (you can write them very fast!) Now, with our...

$9.95

IN STOCK

Mini Thermal Receipt Printer

PRODUCT ID: 597

Add a mini printer to any microcontroller project with this very cute thermal printer. Thermal printers are also known as receipt printers,...

Add a mini printer to any microcontroller project with this very cute thermal printer. Thermal printers are also known as receipt printers, they're what you get when you go to the ATM or grocery store. Now you can embed a little printer of your own into an enclosure. This printer is ideal for interfacing with a microcontroller, you simply need a 3.3V-5V TTL serial output from your microcontroller to print text, barcodes, bitmap graphics,...

$49.95

IN STOCK

Adafruit SPI Non-Volatile FRAM Breakout - 64Kbit / 8KByte

PRODUCT ID: 1897

FRAM, or Ferroelectric Ram, is the coolest new data storage method that all the fashion magazines are talking about. Oh wait, no that's quilted...

$5.95

IN STOCK

MCP23017 - i2c 16 input/output port expander

PRODUCT ID: 732

Add another 16 pins to your microcontroller using a MCP23017 port expander. The MCP23017 uses two i2c pins (these can be shared with other i2c...

Add another 16 pins to your microcontroller using a MCP23017 port expander. The MCP23017 uses two i2c pins (these can be shared with other i2c devices), and in exchange gives you 16 general purpose pins. You can set each of 16 pins to be input, output, or input with a pullup. There's even the ability to get an interrupt via an external pin when any of the inputs change so you don't have to keep polling the chip. Use this chip from...

$2.95

IN STOCK

Adafruit RFM96W LoRa Radio Transceiver Breakout - 433 MHz - RadioFruit

PRODUCT ID: 3073

"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. ...

$19.95

IN STOCK

Adafruit 6-pin AVR ISP Breadboard Adapter Mini Kit

PRODUCT ID: 1465

Programming AVR? Always Googling the pinout? Well, now no longer! It's rare to find a mini kit so elegant, it deserves its own Haiku. A simple...

Programming AVR? Always Googling the pinout? Well, now no longer! It's rare to find a mini kit so elegant, it deserves its own Haiku. A simple breakout, 2x3 box header in the center, two 1x3's on the side. Plugs into any breadboard for neat wiring (in both nifty and clean senses of the word). Comes with a quality mini PCB, a 2x3 box header and a small stick of 0.1" header. Requires some light soldering to use: plug the 2x3 in on the...

$0.95

IN STOCK

Mini Remote Control

PRODUCT ID: 389

This little remote control would be handy for controlling a robot or other project from across the room. It has 21 buttons and a layout we thought...

This little remote control would be handy for controlling a robot or other project from across the room. It has 21 buttons and a layout we thought was handy: directional buttons and number entry buttons. The remote uses the NEC encoding type and sends data codes 0 thru 26 (it skips #3, #7, #11, #15, #19 and #23) to address #0. You can use this to control something that is expecting NEC codes or you can pair this with our IR remote receiver...

$4.95

IN STOCK

Membrane 3x4 Matrix Keypad + extras - 3x4

PRODUCT ID: 419

Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of a thin,...

Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad. Check the tutorials tab for links to an Arduino library...

$3.95

IN STOCK

Adafruit ATSAMD09 Breakout with seesaw

PRODUCT ID: 3657

Adafruit seesaw is a near-universal converter framework which allows you to add add and extend hardware support to any I2C-capable microcontroller or...

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 configured to give a wide range of capabilities. For example, our ATSAMD09 breakout with seesaw gives you 3 x 12-bit ADC inputs3 x 8-bit PWM outputs7 x GPIO with selectable pullup or pulldown1 x...

$4.95

IN STOCK

MCP23008 - i2c 8 input/output port expander

PRODUCT ID: 593

Add another 8 pins to your microcontroller using a MCP23008 port expander. The MCP23008 uses two i2c pins (these can be shared with other i2c...

Add another 8 pins to your microcontroller using a MCP23008 port expander. The MCP23008 uses two i2c pins (these can be shared with other i2c devices), and in exchange gives you 8 general purpose pins. You can set each of 8 pins to be input, output, or input with a pullup. There's even the ability to get an interrupt via an external pin when any of the inputs change so you don't have to keep polling the chip. Use this chip from 2.7-5.5V...

$1.95

IN STOCK

Adafruit RFM69HCW Transceiver Radio Breakout - 433 MHz - RadioFruit

PRODUCT ID: 3071

"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. ...

$9.95

90 IN STOCK

Adafruit Stereo FM Transmitter with RDS/RBDS Breakout - Si4713

PRODUCT ID: 1958

Yaaar! Become your very own pirate radio station with this FM radio transmitter. This breakout board, based on the best-of-class Si4713, is an...

Yaaar! Become your very own pirate radio station with this FM radio transmitter. This breakout board, based on the best-of-class Si4713, is an all-in-one stereo audio FM transmitter that can also transmit RDS/RBDS data! Wire up to your favorite microcontroller (we suggest an Arduino) to the I2C data lines to set the transmit frequency and play line-level audio into the stereo headphone jack. Boom! Now you are the media. Listen using any FM...

$19.95

60 IN STOCK

DS2413 1-Wire Two GPIO Controller Breakout

PRODUCT ID: 1551

You're too cool for I2C, and SPI has so many wires, 8-bit parallel... how can that be fashionable!? You are a 1-Wire kinda gal, and you want more...

You're too cool for I2C, and SPI has so many wires, 8-bit parallel... how can that be fashionable!? You are a 1-Wire kinda gal, and you want more 1-Wire breakouts in your life to complement all of your great engineering. Well rock on, because here you go, it's a 1-Wire controller with two open-drain GPIO. You can put as many of the DS2413's as you want on a single I/O line, each one is uniquely addressable and shares the single I/O...

$4.95

72 IN STOCK

74HC595 Shift Register - 3 pack

PRODUCT ID: 450

Add lots more outputs to a microcontroller system with chainable shift registers. These chips take a serial input (SPI) of 1 byte (8 bits) and then...

Add lots more outputs to a microcontroller system with chainable shift registers. These chips take a serial input (SPI) of 1 byte (8 bits) and then output those digital bits onto 8 pins. You can chain them together so putting three in a row with the serial output of one plugged into the serial input of another to make 3 x 8 = 24 digital outputs. You can chain pretty much as many as you want. This makes it easy to control a lot of outputs like...

$2.75

73 IN STOCK

4x4 Matrix Keypad

PRODUCT ID: 3844

Punch in your secret key (or Jenny's number) into this numeric matrix keypad. This keypad has 16 buttons, arranged in a telephone-line 4x4...

Punch in your secret key (or Jenny's number) into this numeric matrix keypad. This keypad has 16 buttons, arranged in a telephone-line 4x4 grid. The keys are connected into a matrix, so you only need 8 microcontroller pins (4-columns and 4-rows) to scan through the pad. Check the tutorials tab for links to an Arduino library and example code. We include some header so you can plug this into a breadboard with ease, some light...

$5.95

39 IN STOCK

Mini Thermal Receipt Printer Starter Pack

PRODUCT ID: 600

Hit the ground running (and printing!) with this starter pack that includes a thermal printer and all the extras and save a few dollars while...

Hit the ground running (and printing!) with this starter pack that includes a thermal printer and all the extras and save a few dollars while you're at it. Includes: A mini thermal receipt printer - with cables and plastic mounting shimsA roll of 50' long thermal receipt paper - the perfect amount for the thermal printer. BPA-free.5V 2A power supply - an ideal supply for powering the thermal printer (and anything else that can use 5V...

$61.95

80 IN STOCK

3x4 Matrix Keypad

PRODUCT ID: 3845

Punch in your secret key (or Jenny's number) into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4...

Punch in your secret key (or Jenny's number) into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad. Check the tutorials tab for links to an Arduino library and example code. We include some header so you can plug this into a breadboard with ease, some light...

$6.50

IN STOCK

Adafruit Trellis Monochrome Driver PCB for 4x4 Keypad & 3mm LEDs

PRODUCT ID: 1616

This item is just for the Trellis driver PCB assembly: LEDs and buttons not included. Trellis is an open source backlight keypad driver system. It is...

This item is just for the Trellis driver PCB assembly: LEDs and buttons not included. Trellis is an open source backlight keypad driver system. It is easy to use, works with any 3mm LEDs and eight tiles can be tiled together on a shared I2C bus. This PCB is specially made to match the Adafruit 4x4 elastomer keypad. Each Trellis PCB has 4x4 pads and 4x4 matching spots for 3mm LEDs. The circuitry on-board handles the background key-presses and LED...

$9.95

41 IN STOCK