[Fossa Systems], a non-profit youth affiliation primarily based out of Madrid, is growing an open-source satellite tv for pc set to launch in October 2019. The FossaSat-1 is sized at 5x5x5 cm, weighs 250g, and can present free IoT connectivity by speaking LoRa RTTY indicators by way of low-power RF-based LoRa modules. The satellite tv for pc is powered by 28% environment friendly gallium arsenide TrisolX triple junction photo voltaic cells.
The satellite tv for pc’s improvement and launch value beneath EUR 30000, which is fairly outstanding for a cubesat — or a picosatellite, because the undertaking is being dubbed. It has been working within the UHF Beginner Satellite tv for pc band (435-438 MHz) and lately obtained an IARU frequency spectrum allocation for LoRa of 125kHz.
The satellite tv for pc’s specs are nearly as outstanding because the acronyms used to explain them. The design contains an onboard laptop (OBC) primarily based on an ATmega328P-AU microcontroller, an SX1278 transceiver for telecommunications, and an electrical energy system (EPS) primarily based on three SPV1040 MPPT chips and the TC1262 LDO. The satellite tv for pc additionally makes use of a TMP100 temperature sensor, an INA226 present and voltage sensor, a MAX6369 watchdog for single-event upset (SEU) safety, a TPS2553 for single-event latch-up (SEL) safety and varied MOSFETs for the deployment of photo voltaic panels and antennas.
Up till this level the group has been monitoring adoption of LoRa by way of the usage of climate balloons. The cubesat undertaking plans to check the brand new LoRa unfold spectrum modulation utilizing lower than $5 value of receivers. In the end with the aim of democratizing telecommunications worldwide.
The satellite tv for pc is being in-built a cleanroom at Rey Juan Carlos College and has undergone thermovacuum and vibration testing on the facility. The group has since developed an academic satellite tv for pc improvement equipment, which gives three essential 40×40 mm boards that permit the addition of modifications. As their mission states, the group is seeking to develop an open supply undertaking, so the code for the satellite tv for pc is freely out there on their GitHub.