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JCR-RC Mini 35A AM32 ESC
JCR-RC AM32 ESC — Tiny, Powerful, Open-Source
The JCR-RC AM32 ESC is a compact 35A brushless speed controller built for antweight and beetleweight combat robots. Running open-source AM32 firmware, it delivers smooth throttle response, active braking, and bidirectional drive control right out of the box — no programming required for most builds. It pairs directly with the Blitz Lite and other Just Cuz Robotics brushless motors. Sold individually.
$18.00
16 in stock (can be backordered)
The Combat-Proven AM32 ESC, Refined
The JCR-RC AM32 ESC is a 35A brushless speed controller designed for RC combat robots in the antweight and beetleweight classes. Running open-source AM32 firmware, it delivers the smooth throttle response and low-end torque that sensorless brushless motors need — and it works out of the box for most drive applications with no programming required. Sold individually.
Why AM32?
For years, the HAKRC 35A ESC was a staple in the combat robotics community — and this is that same hardware, now running AM32 firmware. With BLHeli_32 exiting the market, AM32 steps in as the open-source successor: actively maintained, field-updatable via our Grey Skies ESC programmer or similar USB or Arduino programmer, and fully configurable for different motor types and applications. The latest stable release is V2.20, with a PWM-by-RPM setting that resolves desync issues on many brushless motors. See our Product Documents for programming resources.
Default Configuration
The JCR-RC AM32 ESC ships pre-configured for brushless drives like the Blitz Lite 2850KV: 3D mode active (bidirectional), brake on stop enabled, and complementary PWM on. It also pairs well with the Blitz Pro and the RDY-5022 Hubmotor. If you’re running the Blitz Pro, change the KV setting to 660 for best results — an ESC programmer makes this straightforward.
Small Size, Real Specs
At just 26×13×5mm and 6.8g with wires, this is one of the smallest 35A ESCs available for combat robotics. It handles 3–5S LiPo input (9–22V) and supports standard RC PWM and DSHOT signaling. The onboard LED lights up when powered and is configurable with the latest AM32 firmware. Note that this ESC has no onboard BEC — it cannot power a receiver directly. Pair it with a Long All-In-One PD Board to handle receiver power alongside your drive and weapon circuits.
What’s in the Box
The JCR-RC AM32 ESC includes pre-installed wires and ships ready to solder. XT30U connectors and MR30 connectors are sold separately. These ESCs are configured for RC-controlled robots and ground vehicles — they are not intended for UAS, UAV, or any aerial application.
Features
- JCR-RC AM32 ESC — same proven HAKRC hardware, now running open-source AM32 firmware
- 35A continuous current — handles antweight and beetleweight brushless drive motors with headroom to spare
- 3–5S LiPo input (9–22V) — compatible with the most common combat robot battery configurations
- Works out of the box — pre-configured for brushless drives like the Blitz Lite 2850KV; no programming needed for most builds
- Field-updatable firmware — reprogram and fine-tune settings with a USB or Arduino programmer
- Active braking and bidirectional control — 3D mode enabled by default for responsive drive
- Compact and light — 26×13×5mm footprint and 6.8g with wires; fits tight chassis layouts
- No BEC — pair with an All-In-One PD Board or other BEC or UBEC for receiver power
Specifications
| Specification | Value |
|---|---|
| Length | 1.02in (26.0mm) |
| Width | 0.51in (13.0mm) |
| Height | 0.20in (5.0mm) |
| Weight (with wires) | 0.24oz (6.8g) |
| Firmware | AM32 (open-source, field-updatable) |
| Continuous Current | 35A (brushless mode) |
| Input Voltage | 3–5S LiPo (9–22V) |
| BEC | None |
| Signal Input | Standard RC PWM / DSHOT |
| Active Braking | Yes |
| Default Configuration | Brushless drive, bidirectional (3D mode), brake on stop enabled |
| Connector | Solder pads with pre-installed wires; XT30U and MR30 sold separately |
| Mounting | M2 screws or double-sided tape |
Frequently Asked Questions
Does this ESC work out of the box?
Yes — the JCR-RC AM32 ESC ships pre-configured for brushless drives like the Blitz Lite 2850KV. For most antweight and beetleweight drive applications, no programming is required. If you’re running a different motor or want to tune settings, you’ll need an ESC programmer.
Does it have a BEC? Can it power my receiver?
No — this ESC has no onboard BEC and cannot power a receiver directly. You’ll need a separate power solution. The Just Cuz Long All-In-One PD Board is a natural pairing — it handles receiver power alongside your drive and weapon power distribution in one compact board.
What motors does it work with?
Options include the Blitz Lite, the Blitz Pro, the RDY-5022 Hubmotor , and most brushless drive gearmotors offered today. Every robot design is different, though — match your ESC to your motor’s current draw and voltage requirements. If you’re running the Blitz Pro, we suggest that you change the KV setting to 660 using an ESC programmer for the best results.
How do I change the firmware settings?
You’ll need an ESC programmer — any programmer that works with BLHeli_32 will work with AM32. Connect the ESC to a battery for power during programming. Note that current limits don’t work correctly on this ESC — leave the current limit disabled. Full settings documentation is available on the AM32 firmware wiki.
Can this ESC run brushed motors?
Brushed firmware for this ESC is available as an experimental branch on GitHub, but has not reached a stable release. Switching to brushed mode requires an ESC programmer. For a stable, supported brushed ESC option, check the rest of the ItGresa ESC lineup.
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