Team Members (1-4 suggested): @awdev
Is this your first PCB rodeo? (if yes, don't feel bad. you're all good): No, I've done other PCB designs before.
What you are making? I'm creating a radio relay tower that runs on 915 MHz and uses my own communications protocol. It will act as a communications point where all LoRa devices on the Trail can send and receive data. I'm using a custom radio protocol (I will release implementation instructions and probably an Arduino library) as well.
Inspiration: I was inspired by the design and rapid deployment capability Anduril's Sentry tower.
Sketches (if they exist) (paper works):
Please refer to the Google Doc below for up-to-date sketches and other information.
Extra: Google Doc Google Sheet
| Name | Quantity | PPU | Total Price | Link (preferably shortened amazon) | Supplier | Notes |
|---|---|---|---|---|---|---|
| Yagi Antenna | 3 | $29.90 | $89.70 | https://a.co/d/70lYmXn | Amazon | |
| RP-SMA Cable (6 feet) | 3 | $12.37 | $37.11 | https://a.co/d/fHAQqg5 | Amazon | We might need the slightly longer variant |
| I²C OLED Display | 3 | $7.00 | $21.00 | https://a.co/d/1aWtzZQ | Amazon | White variant |
| Main Board | 3 | $50.00 | $150.00 | N/A | JLCPCB | May need to increase or decrease this price |
| LoRa breakout | 3 | $40.89 | $122.67 | https://www.sparkfun.com/products/18572 | SparkFun | 1 watt, 30 dBm, 500 bps, apparently 12 miles LOS |
| M5×20mm bolts | 40 | $0.40 | $15.99 | https://a.co/d/8lRrxvg | Amazon | Very cheap, 40 cents a pop |
| M8×40mm bolts | 40 | $0.42 | $16.99 | https://a.co/d/6AfCdJq | Amazon | Very cheap, 42 cents a pop |
| NEMA-17 motors | 3 | $15.66 | $46.98 | https://a.co/d/b7a7ACg | Amazon | Very smooth, and very high precision with a good geartrain |
| Various switches and buttons | 1 | $10.00 | $10.00 | N/A | N/A | clickies |
| Upper pipe flanges | 4 | $3.75 | $15.00 | N/A | JLC3DP | Outsource |
| Lower pipe flanges | 4 | $3.75 | $15.00 | N/A | JLC3DP | Outsource |
| Turret assembly | 1 | $10.00 | $10.00 | N/A | JLC3DP | Outsource |
| 3"×10' PVC pipe | 2 | $27.67 | $55.34 | https://www.homedepot.ca/product/ipex-pvc-3-inches-x-10-ft-solid-sewer-pipe/1000659636 | Home Depot | Request cut in store |
| 38mm² pin merch | 20 | $2.25 | $45.00 | https://www.stickermule.com/ca/products/custom-pins | Sticker Mule | Because they need to get at least something out of this |
| 50mm² sticker merch | 20 | $1.85 | $37.00 | https://www.stickermule.com/ca/products/die-cut-stickers | Sticker Mule | because stickers are cool |