Hardware reference
Specifications
| Specification | MW 4IN1 ESC |
|---|---|
| Configuration | 4-in-1 motor controller |
| Microcontroller | STM32F051 |
| Battery input | 3–8S |
| Voltage limits | 6 V minimum; 65 V absolute maximum |
| Continuous current | 50 A per motor |
| Onboard bulk capacitance | 260 µF |
| External bulk capacitor | 330 µF |
| Input protocols | DShot300, DShot600, PWM |
| Telemetry | Bidirectional DShot; KISS serial telemetry |
| Flight-controller connector | 1 × 8-pin JST-SH |
| Current-sense output | 10 mV/A nominal (100 A/V) |
| Board dimensions | 47 × 45 mm |
| Mounting pattern | 30.5 × 30.5 mm |
| Board weight | 15 g |
Pinout
The ESC uses one 8-pin JST-SH connector for its flight-controller interface. Verify the signal order and connector orientation at both ends of the harness before applying power. A matching connector housing alone does not establish pin compatibility.
With the board oriented as in the top view above—connector on the left and battery pads on the right—the signals run from top to bottom as follows. Positions below refer to this board view, not the mating plug's face.
| Position | Board label | Signal / function |
|---|---|---|
| 1 | B | Battery voltage (VBAT) |
| 2 | C | Analog current-sense output, 10 mV/A nominal |
| 3 | T | KISS serial telemetry output to a flight-controller UART RX |
| 4 | 1 | Motor 1 control input (DShot / PWM) |
| 5 | 2 | Motor 2 control input (DShot / PWM) |
| 6 | 3 | Motor 3 control input (DShot / PWM) |
| 7 | 4 | Motor 4 control input (DShot / PWM) |
| 8 | G | Ground (GND) |
Power
Use a 3–8S battery system. The published 65 V absolute maximum is a component limit, not a recommended operating voltage or an extension of the battery rating.
The board has 260 µF of onboard bulk capacitance; the external bulk capacitor specification is 330 µF. Confirm the external capacitor's voltage rating, polarity, and connection location against the board documentation before installation.
The continuous current rating is 50 A per motor. Account for the motor and propeller load, wiring, and cooling when planning the installation.
Current sensing and telemetry
The analog current-sense output has a nominal sensitivity of 10 mV/A, equivalent to 100 A/V. Use that sensitivity when configuring the flight controller's analog current measurement, following its documented scaling convention.
The analog current-sense output, bidirectional DShot feedback, and KISS serial telemetry are separate interfaces. Configure the measurement source to match the interface actually connected and enabled in your build.
Mechanical integration
The board measures 47 × 45 mm, uses a 30.5 × 30.5 mm mounting pattern, and weighs 15 g. Allow clearance for components, motor wires, the flight-controller harness, and the external capacitor.
For mounting-hole details, component clearances, or a STEP/CAD model, request a product resource.