The Raspberry Pi makes a great USB webcam for $100. There are many Raspberry Pi projects where I spend a few hours (or dozens of hours) building something with a Pi, and realize at the end that not only could I have purchased an off-the-shelf product to do the same thing for half the component cost, but it would work better too.
But this is not one of those projects: The Raspberry Pi and its HQ camera make a surprisingly potent webcam, and if you want to cover the basics, and rival the image quality of all but the highest-end dedicated webcams, you can do it for under $100. Above is a single frame from a recording I did with the HQ Camera on my Raspberry Pi Zero W connected as a standard USB webcam using the Camera app on Windows 10 on my Dell laptop. That particular Dell laptop is the infamous XPS model with a 'nose cam'—a camera placed in the most unfortunate location: under the screen, so it looks straight up your nostrils at a low angle: Video for the Pi Webcam.
QT Py and NeoPixel LEDs. QT Py - SAMD21 Dev Board with STEMMA QT ID: 4600 - $6.00. Color Mixing QT Py Cuff Bracelet. Sipping Power With NeoPixels. Level Shifting 3.3V microcontrollers and NeoPixels. Adafruit NeoPixel Überguide. 3.5" PiTFT OctoPrint Rig. HalloWing M4 Express - ORANGE HALLOWEEN EDITION! ID: 4300 - $39.95. 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! Are you the kind of person who doesn't like taking down the skeletons and spiders until after January? On the front is a cute 1.54" sized 240x240 full color IPS TFT. There's also 4 fang-teeth below the display, these are analog/capacitive touch inputs with big alligator-clip holes.
On the reverse is a smorgasbord of electronic goodies: ATSAMD51J19 @ 120MHz with 3.3V logic/power - 512KB of FLASH + 192KB of RAM, can run Arduino or CircuitPython super fast8 MB of SPI Flash for storing images, sounds, animations, whatever! OK so technically it's more like a really tricked-out Feather M4 Express than a Wing but we simply could not resist the HalloWing pun. 3.5" PiTFT OctoPrint Rig. OctoPrint.org.
3.5" PiTFT OctoPrint Rig. 3D Printed Pi Camera Case and Tripod. Adafruit Trinket M0. Trinket M0 - for use with CircuitPython & Arduino IDE ID: 3500 - $8.95. Introducing Pro Trinket. LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy ID: 2124 - $4.95. If you have an ItsyBitsy or Pro Trinket you probably know it's the perfect little size for a portable project.
This LiPoly backpack makes it really easy to do! Instead of wiring 2 or 3 boards together to make a charging system, this little PCB sits on top of the PCB and allows a LiPoly/LiIon battery to plug in. When the Pro Trinket or ItsyBitsy USB port is powered, the battery is recharged automatically. Unplug the USB port and the microcontroller will switch over to the rechargeable battery. Ideally, this backpack is for use with the 3.3V Pro Trinkets & ItsyBitsy, so that the battery voltage (3.7V-4.2V) will get regulated down to 3.3V on the board. Solder the backpack on with the extra long header so that it can still plug into a breadboard, or clip the long header leads short afterwards for a slim package.
If you want to add an On/Off switch, we also made that really easy. For use with Adafruit LiPoly/LiIon batteries only! Batteries and Pro Trinket or ItsyBitsy not included. Micro Lipo - USB LiIon/LiPoly charger [v1] ID: 1304 - $5.95. Flexible Silicone Neon-like Skinny NeoPixel LED Strip [96 LEDs per meter - 1m long] ID: 4310 - $34.95. LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy ID: 2124 - $4.95.