
R/C Trailink
ESC programmer & App Drive
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Free
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About
TrailLink turns your phone into a Bluetooth programmer for R/C speed controllers. Plug the TrailLink adapter into your ESC's signal lead and connect from the app — no laptop, no USB linker.
TUNE YOUR ESC
- Read and change every setting on AM32 and ESCape32 speed controllers
- Basic and Advanced views, with explanations for the settings
- Holmes Hobbies presets for common crawler and trail setups
- Save your setups in My Settings and put them back on any time
KEEP FIRMWARE CURRENT
- Update AM32 and ESCape32 firmware from the app
- Switch supported ESCs between AM32 and ESCape32 — TrailLink checks compatibility first and keeps a backup of your settings so you can switch back
- TrailLink adapter updates are delivered through the app
APP DRIVE
- Drive the ESC and a steering servo straight from your phone for bench tests and slow-speed moves
- Throttle only runs while your thumb is on the control; lose the connection and everything returns to neutral
- One-hand or two-thumb layouts, adjustable endpoints and reversing
ALSO
- Live signal view of your receiver's throttle pulse
- Wiring help with zoomable photos
- Demo Mode to look around the app without hardware
TrailLink needs a TrailLink adapter from Holmes Hobbies and a supported ESC.
Privacy: no account, no analytics, no tracking. Your settings and saved setups stay on your phone.
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What's New in R/C Trailink
1.0.7
November 4, 2026
• ESC Rescue: find a stuck ESC and start or repair its firmware. • App Drive: smoother driving, plus support for the TrailLink RX4 board (2-speed, drag brake, and steering passthrough from your receiver). • Switching between AM32 and ESCape32 is more reliable, and an interrupted switch can be finished. • ESCape32 startup music now saves reliably. • Optional app update check (Manual by default). • Includes TrailLink firmware 1.0.19. • A cleaner look and many small fixes.
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