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A project log for Thunder Pack

A kick-ass high-power ARM board with everything you need -- and small enough to fit in your pocket.

jeremyJeremy 07/04/2020 at 21:273 Comments

This is a prototype I've been working on for a couple months now. With all the same features as the main ThunderPack board, but much, much smaller! (40mm x 19 mm)

It also has an on-board 16Mb flash chip and a DotStar status LED. (both of these are also getting added to the next version of the standard ThunderPack board).

Due to it's size, I did have to drop a couple things:

This board is perfect for wearable applications that need to be lightweight. 

I've been building this prototype into a leather choker, similar to this Adafruit's Tutorial, for a friend. However, in my version the board is truly integrated with the choker with the switch poking through a slot in the leather and the LEDs mounted to a custom flex PCB from OSH park. I'll post pics and more info soon.

Discussions

tejeshw88 wrote 12/16/2020 at 12:57 point

What about the other pins? PA15, PC13?  Are they defined in Arduino IDE?      I m trying to blink PA15 and not getting any pulse!

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Jeremy wrote 12/16/2020 at 17:29 point

Some pins are reserved for on-board functions. For example, PB12 - PB15 are used for the on-board flash (on the next generation v1.2 board). Some of the pins are not connected to anything due to lack of room (PC13, PA15, etc). Is there a reason you're trying to specifically blink PA15 and not one of the pins available? 

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Jeremy wrote 12/16/2020 at 17:31 point

Here's an Arduino example that will blink LED 1 (PA0): https://github.com/jgillick/ThunderPack/blob/master/examples/Arduino/Blink/Blink.ino

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