Trail R3LAY (#35)

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* Update r3lay.md

equipment/r3lay.md

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+# R3LAY
+
+**Team Members (1-4 suggested):**
+[@awdev](https://hackclub.slack.com/team/U06T766UHGA)
+
+**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.
+
+<img src="https://awdev.codes/tower.png" alt="Anduril's Sentry tower." width="300px">
+
+**Sketches (if they exist) (paper works):**<br>
+Please refer to the Google Doc below for up-to-date sketches and other information.
+
+**Extra:**
+[Google Doc](https://docs.google.com/document/d/16l_-EpRB6SRwwWAv7UWhFTdDw4K-MfWc5R9WVGZRzxU/)
+[Google Sheet](https://docs.google.com/spreadsheets/d/1felP8TacBeATFT8NmPkRS-dTG1SigL1z-lPHb7KFYmY/)
+
+|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