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Hi! Galmon guy here. This has only once been a problem, someone with a modified firmware, and that produced some exceedingly strange data. In the galmon design,

Hi! Galmon guy here. This has only once been a problem, someone with a modified firmware, and that produced some exceedingly strange data. In the galmon design, which is quite neat if I say so myself, data is stored per source. If any data is bad, we can throw it out. If someone would really want to mess with us they could of course. But we're probably niche enough that people don't bother.

captn3m0 4y ago
Any plans to support other navigation systems? Would love to help with https://en.m.wikipedia.org/wiki/Indian_Regional_Navigation_Satellite_System https://en.m.wikipedia.org/wiki/Indian_Regional_Navigation_S...
- dark-star 4y ago
  Are there even any chipsets out there that can receive IRNSS? I don't think the very common u-blox ones can. It seems like only some Qualcom 4G/5G chipsets support it, which are probably difficult to get on a hacker-friendly add-on board, especially outside India?
  - captn3m0 4y ago
    Yeah, probably something to reconsider by end of this year. There’s a planned mandate for smartphones to support this: https://www.gpsworld.com/india-mandates-navic-support-for-smartphones-no-timeline-yet/ https://www.gpsworld.com/india-mandates-navic-support-for-sm....
  - edb_123 4y ago
    Septentrio, Hemisphere and Trimble have boards capable of receiving NavIC/IRNSS, at least. The cheapest module would probably be Septentrio Mosaic-X5.
    - dark-star 4y ago
      Digikey lists that module (which is not much different in size/shape from the U-Blox modules) at 675$, so I'm not sure this puts it in the cheap/hobbyist range ...
ck2 4y ago
How about maybe support for GPS extensions like WAAS (used by aircraft to land in US but can be accessed by some consumer devices) https://en.wikipedia.org/wiki/Wide_Area_Augmentation_System https://en.wikipedia.org/wiki/Wide_Area_Augmentation_System Greatly improves altitude accuracy in North America
- BenjiWiebe 4y ago
  It has it. Look for SBAS right above the chart. That's the term for WAAS/EGNOS/etc systems. Satellite-based augmentation system.

captn3m0 4y ago

Any plans to support other navigation systems? Would love to help with https://en.m.wikipedia.org/wiki/Indian_Regional_Navigation_Satellite_System https://en.m.wikipedia.org/wiki/Indian_Regional_Navigation_S...

dark-star 4y ago
Are there even any chipsets out there that can receive IRNSS? I don't think the very common u-blox ones can. It seems like only some Qualcom 4G/5G chipsets support it, which are probably difficult to get on a hacker-friendly add-on board, especially outside India?
- captn3m0 4y ago
  Yeah, probably something to reconsider by end of this year. There’s a planned mandate for smartphones to support this: https://www.gpsworld.com/india-mandates-navic-support-for-smartphones-no-timeline-yet/ https://www.gpsworld.com/india-mandates-navic-support-for-sm....
- edb_123 4y ago
  Septentrio, Hemisphere and Trimble have boards capable of receiving NavIC/IRNSS, at least. The cheapest module would probably be Septentrio Mosaic-X5.
  - dark-star 4y ago
    Digikey lists that module (which is not much different in size/shape from the U-Blox modules) at 675$, so I'm not sure this puts it in the cheap/hobbyist range ...

ck2 4y ago

How about maybe support for GPS extensions like WAAS (used by aircraft to land in US but can be accessed by some consumer devices) https://en.wikipedia.org/wiki/Wide_Area_Augmentation_System https://en.wikipedia.org/wiki/Wide_Area_Augmentation_System Greatly improves altitude accuracy in North America

BenjiWiebe 4y ago
It has it. Look for SBAS right above the chart. That's the term for WAAS/EGNOS/etc systems. Satellite-based augmentation system.