NEW GUIDE: Composite video, AM radio from ATSAMD21 (incl Circuit Playground Express)

New guide on the Adafruit Learning System: Circuit Playground Express (& other ATSAMD21 Boards) DAC Hacks

Recently we’ve been exploring unconventional uses for the MCU peripherals inside Circuit Playground Express and other ATSAMD21-based boards.

Between the new chip’s digital-to-analog converter (DAC) and direct memory access (DMA), we’ve managed to generate low-resolution composite video and very limited range AM radio, and have Arduino libraries for both now. These work straight off the board — just some alligator test leads are needed — no other parts or breadboard involved.

These are “hack” projects and not very practical, and the composite video signal may not work with all displays, but they give a taste of might be possible with some outside-the-box thinking with new hardware. What might be squeezed from this chip in the future?

Read More…


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 28,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — Peloton to break ground at a new manufacturing campus in Ohio

Wearables — A costume and a photo op

Electronics — Ew! Sticky!

Python for Microcontrollers — Python on Microcontrollers Newsletter: New CircuitPython Releases, RP2040 Singles and more! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — Toddler Clock, Predictive Weather Station, and more!

Microsoft MakeCode — Arcade Beginner Skillmap

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 06/09/21 feat. #Adafruit #Trinkey #QT2040 – RP2040 USB Key with Stemma QT!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.