News, guides & articles
Programming & Electronics ramblingsLogging at 8kHz on an ESP32-S3 in Arduino: running the program from PSRAM (XiP)
Can an ESP32-S3 really log at 8kHz or higher? We measured it. The limit turns out to be the flash, not the CPU, and running the program from PSRAM sorts it. Test results, plus our rebuilt Arduino libraries to download.
Guides & TipsWhy a Nano flight log can be trusted: signed, sealed, verifiable
Every Nano flight log is fingerprinted and digitally signed on the device, so any edit is detected and a log can be verified by anyone. Here is how it works, what it stops, and how a contest can use it.
Guides & TipsThe rocket site survey and landing prediction tool
The rocket site survey and landing prediction tool
Programming & Electronics ramblingsTrueFuse 2F: Measuring the Port Instead of Trusting It
The third part of the altitude fusion filter behind AltimeterCloud. A port coefficient measured rather than assumed, a slew witness taught to look both ways, an ejection charge that reads the wrong way up, and the same law ported into two firmwares that could not be built more…
Read more →
Product UpdatesTrueFuse 2E: What Two Hundred Flights Taught Our Altimeter Fusion Filter
In August we explained why a barometer lies during a rocket flight and how TrueFuse 2C referees between it and the accelerometer. This is what happened next: two hundred and one real flights run through every candidate change, a new witness for the small ejection notches the old…
Read more →
Programming & Electronics tutorialsAltimeter code: Page 1, introduction to DIY rocket altimeters
The Mercury V1 is the one altimeter we leave unlocked on purpose, so you can put your own code on it. Part one takes you from a bare Arduino IDE to a working barometric altimeter that prints pressure, temperature and height five times a second, and turns its LED blue when you…
Read more →
Programming & Electronics tutorialsSetting up the Arduino IDE for ESP32-S2, S3 and C6
Getting the Arduino IDE talking to an ESP32 is more fiddly than it looks, and most of
the trouble comes from a handful of board settings rather than the install itself. This
guide covers the whole process for the S2, S3 and C6, including the ones that catch
everybody out.
Programming & Electronics ramblingsTrueFuse 2C: How Our Model Rocket Altimeters Fuse Sensors for Accurate Altitude
Barometric pressure sensors are superb at rest, but a rocket flight attacks them: airflow over the static port during the burn, ejection charge spikes, transonic effects, even sunlight under the parachute. TrueFuse 2C is the sensor fusion filter behind AltimeterCloud and our…
Read more →
Product UpdatesNew Nano altimeter firmware (v1.62)
Nano firmware 1.62 brings TrueFuse 2C, the AltimeterCloud altitude fusion filter, onto the device itself: the same law the cloud runs, verified identical to the millimetre on real flights. Also in this release: rail angle measurement, sustained-thrust burnout detection, a…
Read more →