Recently Arduino came out with the Arduino Zero. This is a neat 48MHz ARM Cortex M0 processor on a PCB with the same pin outs as an Arduino UNO. Existing 3rd party UNO libraries are a little hit and miss because some access the underlying hardware registers of the UNO. The Zero hardware registers are completely different from UNO. Still, the basic 1st party Arduino libraries work fine and I’m sure those 3rd party libraries that were twiddling the UNO hardware registers directly will start to support the Zero over time.
Anway, my curiosity was peaked by the ARM processor for the Zero the Atmel ATSAMD21G18. It turns out that the processor has alternative packages with higher pin counts. Same silicon, just more pins. So I gave the ATSAMD21J18 a try. In order to be able to use extra pins with digitalWrite, I had to add a small amount of code to a file called variant.cpp, but once done, I had a Zero with a nice chunk of extra I/O capability.
I’m getting my original singing pumpkin display ready for BVNA’s Pumpkin Pavilion and Halloween. The original display was pure prototype electronics consisting a bunch of stuff from Adafruit: an UNO, a Wave Shield, a PWM/Servo driver, and servos. There was a footprint challenged custom PCB for a TDA7297 and some junk bin DC-DC convertors.
It didn’t look pretty, but it did the job for years. However, the new fully integrated prototype controller looks a lot snazzier.
There are still more design changes to come for this board, but it was really nice to see it perform as intended in my full display.
We mentioned Ben’s “Loop the Lake” project a few weeks ago, and yes.. he made it back! In fact, he was at Maker Faire Milwaukee talking about his adventure, and he just did an interview with Wisconsin Public Radio about the trip.
Thank you again to Van McNeil and WISN 12 for their interest in Doors Open Milwaukee 2015! Historic Milwaukee has done a phenomenal job promoting and organizing this event for the last five years. If you haven’t had a chance to visit any of the 175+ buildings available this weekend, there’s still time Sunday from 10 AM to 5 PM. Be sure to check the full list of participants at the official Doors Open website:
Join us for The Greatest Show (& Tell) on Earth at Wisconsin State Faire Park September 24th & 25th, 2016. Admission is free. A joint presentation by Milwaukee Makerspace and the Betty Brinn Children's Museum.
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