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The MCP3008 is a low cost 8-channel 10-bit analog to digital converter.  The precision of this ADC is similar to that of an Arduino Uno, and with 8 channels you can read quite a few analog signals from the Pi.  This chip is a great option if you just need to read simple analog signals, like from a temperature or light sensor.  If you need more precision or features, check out the ADS1x115 series o

When the Pi Zero came out, one of the downsides (!) of the low-cost design was swapping the 'standard' USB A-port for a micro-B port. Now you have to use an 'OTG' cable instead of just plugging in a device. There was also the matter of, if you didn't have anything connected to USB, and powered up the Pi Zero with an old Raspbian image, you'd get a strange warning WARN::dwc_otg_handle_mode_mismatch

On the Pi Zero, we dont have pins PWM0 (pin #40) and PWM1 (pin #45)- those are not available on the PCB. That would normally be super :( :( but it turns out that while those pads are not exposed, we can re-route those signals to other pins that we can get to! You can get to PWM0 on GPIO #18 (ALT5) and PWM1 on GPIO #13 (ALT0) or GPIO #19 (ALT5) - see the full list of pins and alternate functions he

OK we're onto the fun part now! Be sure you have completed the Assembly step before continuing, the soldering is not optional. Before connecting any cables, however, it makes sense to get the soldering out of the way if needed. If you're using a 64x64 RGB matrix and either a Bonnet or a Rev C HAT, use your soldering iron to melt a blob of solder on the bottom solder jumper so the middle pad is 'sh

Uh, well, there aren't any! That's right, to keep the Pi Zero small and low cost, the headphone audio filter isn't included You can still get digital audio out via HDMI so if you plug it your Pi into a monitor with speakers, that will work fine.

This guide was written for older Raspberry Pi boards. It will not work with Raspberry Pi 4 or 5 without changes. No ETA on an update. Do you need a simple way to display seamless looping video files, like in an art exhibit or digital sign?  Check out this Raspberry Pi video looper project to learn how to turn a Raspberry Pi into a dedicated video playback machine. Just stick a USB drive loaded wit

The great advantage of connecting this way is that it can even supply the power for your Pi and you do not need keyboard, mouse or display attached to the Pi to log into it. You will need to install terminal emulation software (Putty) if you are using Windows and also USB drivers for the Console Lead. The Mac Terminal comes with its own software. The Raspberry Pi uses its built-in serial port to a

Driving servo motors with the Arduino Servo library is pretty easy, but each one consumes a precious pin - not to mention some Arduino processing power.  The Adafruit 16-Channel 12-bit PWM/Servo Driver will drive up to 16 servos over I2C with only 2 pins.  The on-board PWM controller will drive all 16 channels simultaneously with no additional Arduino processing overhead.  What's more, you can cha

Trinket may be small, but do not be fooled by its size! It's a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your expensive dev-board and you aren't willing to take apar

This tutorial may be outdated. It is no longer recommended for beginners, and may need modifications to code or hardware that is not indicated in the tutorial.

Would you like to use your Pi as a WiFi router? Or maybe have it as a special filtering access point? Setting up a Pi as an access point (AP) is a bit more advanced than using it as a client, but still only a half hour of typing to configure. This tutorial will make it so the Pi broadcasts a WiFi service and then routes internet traffic to an Ethernet cable. Since its all Linux you can go in and u

Celebrate the 25th anniversary of that classic gaming device by building your own with 3d printing and DIY electronics from adafruit. In this project we'll use a raspberry pi and TFT touch screen to make an epic DIY gamegirl. Since it's a Raspberry Pi Linux computer, we can run differerent emulators on it. We happen to be partial to 8-bit NES but there's also MAME support and maybe you could even

I2C is a very commonly used standard designed to allow one chip to talk to another. So, since the Raspberry Pi can talk I2C we can connect it to a variety of I2C capable chips and modules. The I2C bus allows multiple devices to be connected to your Raspberry Pi, each with a unique address, that can often be set by changing jumper settings on the module. It is very useful to be able to see which de

This project explores the Adafruit PiTFT touchscreen and the Raspberry Pi camera board to create a simple point-and-shoot digital camera. One can optionally use WiFi and Dropbox (a cloud file storage and synchronization service) to automatically transfer photos to another computer for editing. This isn’t likely to replace your digital camera (or even phone-cam) anytime soon…it’s a learning exercis

NDEF (NFC Data Exchange Format) The NFC Data Exchange Format (NDEF) is a standardised data format that can be used to exchange information between any compatible NFC device and another NFC device or tag. The data format consists of NDEF Messages and NDEF Records. The standard is maintained by the NFC Forum and is freely available for consultation but requires accepting a license agreement to downl

This tutorial may be outdated. It is no longer recommended for beginners, and may need modifications to code or hardware that is not indicated in the tutorial.

This guide, written in 2013, predates newer Pi operating systems and hardware so it does not reflect the instructions for more modern hardware & software. It's here for reference only. Feel like someone is snooping on you? Browse anonymously anywhere you go with the Onion Pi Tor proxy. This is fun weekend project that uses a Raspberry Pi, a USB WiFi adapter and Ethernet cable to create a small, lo

Please sign in to subscribe to this guide. You will be redirected back to this guide once you sign in, and can then subscribe to this guide. Ladyada and pt had an old NeXT keyboard with a strong desire to get it running on a modern computer. These keyboards are durable, super clicky, and very satisfying to use! However, they are very old designs, specifically made for NeXT hardware, pre-ADB and pr