Hi Matteo, Congratulations for achieving it! I just posted about it on LinkedIn too!
We are grateful for all you have done for NuttX too! The Raspberry Pi 4 port for example will open new possibilities for NuttX! BR, Alan On Fri, Jan 24, 2025 at 12:00 AM Matteo Golin <matteo.go...@gmail.com> wrote: > Hello everyone, > > I just wanted to share that I have finished developing a flight computer > for my L1 rocket, which I have designed from > scratch with the intent of running NuttX (right down to the LED status > indicators). This is distinct from the InSpace > flight computer designed this year that I have mostly been emailing about, > which is more capable and designed for higher > power (L3, 30,000ft) rockets. > > I have posted all of the design files here ( > https://altusmetrum.org/TeleMetrum/), and started on creating the > out-of-tree board support for it: https://github.com/linguini1/pygmy-nx > > Many friends that I have made through the rocketry hobby are very > interested in having electronics on board their > rockets as they do certification flights and hobby flights. This allows > them to come up with some flight characteristics > about their rocket. Unfortunately, most telemetry capable flight computers > are quite expensive. > > This board is meant to be an open-source alternative to existing, pricey > flight computers like the Altus Telemetrum > (https://altusmetrum.org/TeleMetrum/) and similar, which cost around > $430CAD where I live. The Pygmy and its ground > station receiver totals about half of that, and that is as a prototyping > cost with a small batch order. > > Since discovering NuttX and how capable it is, I knew that it would be a > great candidate for use on this board. It's > open source and well maintained, with a nice ability to customize its > features. Unlike a lot of commercial alternatives, > I have designed this flight computer to be "hackable" so that hobbyists > can modify the NuttX image on it, write their > own applications or even put MicroPython on it. NuttX is really conducive > to the goal of being hackable and powerful. > > I have successfully been able to bring up the board just recently, > communicate with all my sensors, use the existing > UORB driver for the MS5607 and test the GPS with the wonderful `gps` > example in the apps collection. I have a few > sensors to write drivers for and I have yet to test the SPI micro SD card, > but it's looking like NuttX was a great > choice for getting this going. I'm very excited to get some software > written for it, and I will be launching it in the > spring for my Tripoli L1 certification flight if all goes to plan. > > I want to say thank you to the community here again for being so welcoming > and for dedicating so much time to creating > an incredibly powerful and easy to use RTOS. I would not have believed it > was possible for me to create my own flight > computer from scratch and bring it up so quickly based on my experience > with other RTOSes. > > Hopefully this is of some interest to you all! I don't know how many > boards have been built with the intent to run > NuttX specifically, but here is another that will hopefully gain some > popularity in the rocketry community. > > -- > Matteo Golin >
