Yes, it doesn’t use a gyro, but it does employ an axial accelerometer together with altitude qualification to perform the off-axis detection for staging. A very versatile altimeter for the price, particularly if you’re not challenged using a soldering iron.The new Eggtimer proton calculates and detects off angle, to prevent unsafe airstarts. It does not use a gyro, but it does have 6 channels.
Thanks guys! All good options, but they're all too expensive for my team so we'll look for other ways to do our project.
I appreciate the concern, but our project isn't HPR and is in planning phases. It'll be staying mid power and under 1000 ft.Hi Kavel,
I'm going to be honest here. If your team can't afford ~$300 USD in electronics to ensure you're going to be able to safely and successfully stage a HPR stack you should probably re-evaluate if you can even afford to attempt the project full stop. Unless you're staging slow and low, which itself adds challenges to the project, you'd most likely need tracking on the sustainer. Ideally that tracking would be GPS based and that would most likely exceed the costs associated with purchasing avionics that can inhibit lighting your sustainer motor based on tilt values. Most of the time HPR staging is complex, hard, and expensive. If $300 is a deal breaker that concerns me primarily as it will most likely lead to corners being cut in the name of cost savings. That's not a great recipe for success when staging imho.
No worries. Good luck!I appreciate the concern, but our project isn't HPR and is in planning phases. It'll be staying mid power and under 1000 ft.
You may not need a full IMU for off-axis protection, however you still need to sim it thoroughly and accurately so you know what's going on. There are a number of reasonably affordable devices that will do the staging based on altitude@time and/or velocity@time, I would highly recommend using one. Even with a MPR 2-stager, it's still quite possible to have it do things that you don't want. Doing MPR as a gateway for ultimately building an HPR 2-stager is an excellent idea.I appreciate the concern, but our project isn't HPR and is in planning phases. It'll be staying mid power and under 1000 ft.
Enter your email address to join: