developmentFOSSASAT-1 Update 10

October 2, 2018by Julian Fernandez0

Today we have a pretty exciting update, quite a bit of thing have happened since last week mostly regarding the outreach of the project.

I had the opportunity to give a brief presentation about the FOSSASAT-1 project at the Open source CubeSat Workshop in the European Space Astronomy Center in Madrid last week. This was an amazing experience and once again the support from the community was immense. I also had the chance to host a workshop group regarding the development of open source aerospace missions on a global community scale. It was great to talk with so many talented people working in the same sector, a lot of ideas were thrown around and hopefully we can follow up some collaborations soon!

Here are some pictures of me presenting and having lunch with Pieter Ibelings, Jo Hinchliffe and Daniel Estévez.

We also had a great meeting regarding pocketqubes with Felix Paez from AMSAT-EA and Rakesh Chandra from Orion Space in the AMSAT headquarters, both are developing pocketqubes. It was great to share ideas between such similar projects on how we could solve several issues. We will definitely be working closely with AMSAT regarding the development of the satellites and look forward to our future collaborations! We also managed to make contact through the AO-91 and SO-50 satellites while we were there!

 

Regarding development of the satellite, we have completely finished the v2 version of the EPS & communications of the satellite, although extensive testing still needs to be carried out.

The new MPPT charging circuit has no switched to an all parallel setup and we have implemented new circuitry regarding current regulation for the common 3.3v bus. The Communication board now features dedicated temperature sensors, current limiting circuitry and a new higher quality crystal for the SX1278. It still includes the current sensor, watchdog and MOSFETs from the previous prototypes. For the moment the only improvement already planned for V3 is the use of a TCXO crystal for a more constant frequency regarding temperature change.

 

We have also received our ground station kits that will be used to decode telemetry from the satellite and communicate with it. They are simply composed of an inexpensive 2.2″ TFT LCD with integrated SD reader, an Arduino nano, a DRF1278 chip and our custom PCB boards with some additional antenna and battery connectors, the whole lot of components can be bought for under 15$ on eBay.  These will most likely be sold on our webpage soon.

 

Julian Fernandez

Leave a Reply

Your email address will not be published. Required fields are marked *

All rights reserved FOSSA Systems © 2018
https://i2.wp.com/fossa.systems/wp-content/uploads/2018/07/logo_icon-e1537216682716.png?fit=90%2C100&ssl=1