Ultimate Arrma Transmitter Box!

thingiverse

This is an all-in-one solution for a maxed-out Castle Creations setup for your Arrma 1/8th scale car. The Story: I upgraded my Kraton 6S with a Castle 1717 and MM8X, and wanted to get telemetry for my Futaba 7PXR transmitter. Because when you have gone overboard in this hobby, there is no going back. I also wanted to field-program the car (via smartphone) and download telemetry (via PC) when I got back home. I also have a mighty [direct-voltage 6S servo](https://nitrohobbies.com/nhxmax6/) and wanted to be able to leave the battery plugged in and therefore needed a relay to turn off the power when the car is off.) This meant the transmitter box needs to hold: 1. The [Futaba R334SBS-E receiver](https://futabausa.com/product/r334sbs-e/) 2. The [Castle Telemetry Link for S-BUS](https://www.castlecreations.com/en/telemetry-link-for-sbus2-010-0152-00) 3. An [Electronic Switch Relay](https://www.amazon.com/gp/product/B08FLVGTXQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) for the direct-voltage servo 4. The [Castle B-LINK bluetooth adapter](https://www.castlecreations.com/en/pc-software-and-cables-4/b-link-bluetooth-adapter-011-0135-00) 5. All dem wires And, for added complexity, the B-LINK is not compatible with the Telemetry Link using S-BUS! So under normal operations you need to bypass the B-LINK completely. But that's okay because I needed to be able to easily unplug the ESC anyway to download telemetry, so the connector needed to be on the outside of the case. The solution was to plumb the B-LINK input connector to the top of the case as well so I can a) run the car, b) program it with the B-LINK, or c) download telemetry all by disconnecting the ESC control cable on top. The 4-pin header snaps into place, you'll need to make a small harness here but it only requires a basic set of servo connectors. The solution packs a ton of stuff while retaining the lower half of the stock receiver box. I'm still tweaking this but I'm thrilled with the results so far.