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u/InitialKey12

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▲ 5 r/PCB

I'm trying to launch a high-altitude balloon later this Spring or Summer, and made a board for telemetry and other data to be sent back to my ground station.

  • It is based around the Seeed Studio XIAO ESP32-S3 Sense, as it's really cheap and makes it easy to integrate a camera
    • Images will be captured, saved to SD card (along with telem), and sent with SSDV over LoRa
  • LoRa module is the Seeed Studio 114993390, which has an SX1262 internally. Antenna will be the 206764-0050 from Molex
  • GPS is from a SAM-M10Q-00B GPS module, which uses the ground plane on the PCB as part of the antenna setup. The PCB is a 30x60mm board (rather than the 50x50 that the datasheet recommends, due to space problems) to accommodate the M10Q's antenna needs.
  • It will be running off 3x Energizer Ultimate Lithium AAA's, and I have a TPS631000DRLR to get that to 3.3V (buck-boost).
  • It will use a TPS22917DBV for high side switching the payload
  • It uses the MCP3204 as an ADC for two LMT87LPGM (temp sensing) and battery voltage over SPI due to the lack of much GPIO.

If I could get a review, that would be wonderful. Really not too complicated of a board, but I'd rather be safe than sorry. Thank you in advance!

KiCanvas link in case that's easier: https://kicanvas.org/?repo=https://github.com/radeeyate/UpLink/tree/main/hardware

u/InitialKey12 — 23 days ago
▲ 41 r/framework

After Amazon canceled my $300 order and raised the price to $600 for the 32 gigs of LPCAMM2 for the FW13 Pro I preordered, I went looking for places that might still be selling it. After Best Buy and pretty much every other commercial retailer I saw had it out of stock and super high prices, I found Central Computers. At time of posting, 32gb costs $320-$350 and 64gb as $700.

I've yet to receive the stick yet but they do look legit and have several real stores open in the Bay Area.

Here's a link for their site: https://www.centralcomputer.com/catalogsearch/result/?q=lpcamm2

Hopefully other people can see this so they don't have to sell a kidney just to use their new laptop...

reddit.com
u/InitialKey12 — 23 days ago
▲ 2 r/AskElectronics

I'm trying to launch a high-altitude balloon later this Spring or Summer, and made a board for telemetry and other data to be sent back to my ground station.

  • It is based around the Seeed Studio XIAO ESP32-S3 Sense, as it's really cheap and makes it easy to integrate a camera
    • Images will be captured, saved to SD card (along with telem), and sent with SSDV over LoRa
  • LoRa module is the Seeed Studio 114993390, which has an SX1262 internally. Antenna will be the 206764-0050 from Molex
  • GPS is from a SAM-M10Q-00B GPS module, which uses the ground fill on the PCB as part of the antenna setup. The PCB is a 30x60mm board (rather than the 50x50 that the datasheet recommends, due to space problems) to accommodate the M10Q's antenna needs.
  • It will be running off 3x Energizer Ultimate Lithium AAA's, and I have a TPS631000DRLR to get that to 3.3V (buck-boost).
  • It will use a TPS22917DBV for high side switching the payload
  • It uses the MCP3204 as an ADC for two LMT87LPGM and battery voltage over SPI due to the lack of much GPIO.

If I could get a review, that would be wonderful. Really not too complicated of a board, but I'd rather be safe than sorry. TIA!

KiCanvas link in case that's easier: https://kicanvas.org/?repo=https%3A%2F%2Fgithub.com%2Fradeeyate%2FUpLink%2Ftree%2Fmain%2Fhardware

u/InitialKey12 — 24 days ago