lyosha 50 #1 September 9, 2015 I think an AAD is biting off a bit much for a first effort. Anyone up for trying to make an open source altimeter? I would be very interested in joining forces with someone who has some experience with hardware design, as that is what I lack experience with. Quote Share this post Link to post Share on other sites
hackish 8 #2 September 9, 2015 I designed and built one that got integrated into an LCD jump light that showed the altitude and count-down on jump run. Ultimately it was too much trouble to get it approved to install on an airplane so it still sits on one of my tables under a pile of dust. It used that scp1000 sensor I mentioned in the other thread. -Michael Quote Share this post Link to post Share on other sites
uer16 1 #3 September 9, 2015 Last year I made one with a 7-segment LED display, which, even though it was the brightest on the market, was too dim in the sun. And at 100mA current draw, the battery couldn't last a day. I'm now interested in making one with a big 2.7" Sharp Memory display. Will work on the hardware over the next couple months, will let you know of the progress. Software-wise, writing render code for the 400×240 (or any other really) display would be a first for me, so help would definitely be appreciated. I'll put all the stuff in a bitbucket repo and link it later here. Quote Share this post Link to post Share on other sites
fluffyduckie 6 #4 September 9, 2015 Talk to Erin Franke from Elemental. This is right up their alley and something they are actively working on."I love when humans fly," Quote Share this post Link to post Share on other sites
acho 0 #5 September 9, 2015 lyoshaI think an AAD is biting off a bit much for a first effort. Anyone up for trying to make an open source altimeter? I would be very interested in joining forces with someone who has some experience with hardware design, as that is what I lack experience with. while I was recovering from ankle surgery I got bored and did project like this so if you are interested send me PM ;) Quote Share this post Link to post Share on other sites
lyosha 50 #6 September 10, 2015 fluffyduckieTalk to Erin Franke from Elemental. This is right up their alley and something they are actively working on. They're trying to make money off of it. I'm afraid that if they're trying to make money off of it, they would be unwilling to cooperate. :-/ Quote Share this post Link to post Share on other sites
uer16 1 #7 February 19, 2017 After some time on/off working on this I think it might be almost ready for public consumption. I called it OpenSky Hardware: https://bitbucket.org/i2barano/opensky_hw Software: https://bitbucket.org/i2barano/opensky_fw Writeup (mostly manufacturing): https://sites.google.com/site/ivanbaranov/openskyaltimeter Some specs: Very large 33x22mm display Long battery life, ~300hrs (37 8-hour jumping days) Rechargeable from micro-USB -10C to 60C operation 56.5x44x12.2 mm size I've been jumping the design for a bit more than a year now, and feel confident in its' reliability, and also got good feedback from people checking it out. Overall it's designed to be a very simple no-bullshit altimeter with a huge screen and good battery life. It doesn't have fancy features like commercial altimeters, but I felt that adding those would move resources away from reliability engineering. I will be finalizing firmware development and testing, after that is done, I may be selling first small batch at cost for people to use/test-jump. If anyone is interested PM me so I can gauge interest and know how much effort to put into this. Also please PM if you want to contribute, I'm mainly looking for people to do design review. Quote Share this post Link to post Share on other sites
IanHarrop 41 #8 February 19, 2017 I really enjoyed the blog, thanks for that. Very interesting project."Where troubles melt like lemon drops, away above the chimney tops, that's where you'll find me" Dorothy Quote Share this post Link to post Share on other sites
lyosha 50 #9 February 23, 2017 uer16 After some time on/off working on this I think it might be almost ready for public consumption. I called it OpenSky Hardware: https://bitbucket.org/i2barano/opensky_hw Software: https://bitbucket.org/i2barano/opensky_fw Writeup (mostly manufacturing): https://sites.google.com/site/ivanbaranov/openskyaltimeter Some specs: Very large 33x22mm display Long battery life, ~300hrs (37 8-hour jumping days) Rechargeable from micro-USB -10C to 60C operation 56.5x44x12.2 mm size I've been jumping the design for a bit more than a year now, and feel confident in its' reliability, and also got good feedback from people checking it out. Overall it's designed to be a very simple no-bullshit altimeter with a huge screen and good battery life. It doesn't have fancy features like commercial altimeters, but I felt that adding those would move resources away from reliability engineering. I will be finalizing firmware development and testing, after that is done, I may be selling first small batch at cost for people to use/test-jump. If anyone is interested PM me so I can gauge interest and know how much effort to put into this. Also please PM if you want to contribute, I'm mainly looking for people to do design review. Cool stuff! Quote Share this post Link to post Share on other sites