Product overview
The Maytech MTSPF7.5H No Case is a programmable motor-controller PCB for electric propulsion and robotics, including electric skateboards, efoils and underwater ROVs. It is supplied as a PCB-only unit without a case or water cooling. Its V75/300-based hardware uses separate high-current and low-current circuit boards with a heat sink between them. Construction includes 24 MOSFETs, four MOSFETs in parallel, a copper strip on the PCB and nine capacitors rated at 100V 470μf each. The firmware is upgradable.
The controller accepts 5-18S LiPo input at 18V-75V and includes a BEC, with 5V and 12V auxiliary outputs for external devices. VESC_TOOL supports programming for brushed and brushless motors, inrunner and outrunner layouts, and sensored, sensorless or hybrid operation. Available control includes BLDC square-wave and FOC sine-wave modes, adjustable forward/reverse/braking and regenerative braking. USB, CAN, UART, PPM, ADC and motor sensor interfaces provide integration options, while SWD gives direct chipset access for diagnostics, debugging and real-time data.
The VESC current specification is 300A. VESC_TOOL settings specify motor current maximum at ≤300A and absolute maximum current at 350A, both according to motor current; battery current maximum is ≤150A according to battery discharge current. A sealed enclosure requires forced water cooling, sufficient controller space and unobstructed cooling tubes with adequate water flow. In controller arrays, one receiver must not feed multiple VESCs through Y-PPM wiring because permanent damage may result. CAN interconnection must use only CAN L and CAN H, leaving GND and 5V unconnected between controllers.
Specifications
| Specification | Value & conditions |
|---|---|
| Model | Maytech MTSPF7.5H No Case |
| VESC current | 300A |
| Input voltage | 5-18S LiPo (18V-75V) |
| BEC | Included |
| Supplied configuration and water cooling | PCB board only, without case or water cooling |
| Hardware version | Based on V75/300 |
| Firmware | Upgradable |
| Capacitors | 9 capacitors, each 100V 470μf |
| Motor Current Max setting | ≤300AAccording to motor current. |
| Absolute Maximum Current setting | 350AAccording to motor current. |
| Battery Current Max setting | ≤150AAccording to battery discharge current. |
| MOSFET count | 24 MOSFETs |
| Board architecture | Four MOSFETs in parallel; copper strip on the PCB; separate high-current and low-current circuit boards with a heat sink between them |
| Motor compatibility and sensing modes | Brushed and brushless motors; inrunner and outrunner motors; sensored, sensorless and hybrid operation |
| Programming | Programmable through VESC_TOOL |
| Motor-control waveforms | BLDC square-wave control and FOC sine-wave control |
| Direction and braking | Adjustable forward, reverse and braking; regenerative braking |
| Auxiliary power outputs | 12V and 5V AUX outputs for external devices |
| PPM interface and wiring restriction | PPM transceiver connection; do not connect one receiver to two or more VESCs through Y-PPM wiring, which may cause permanent damageController arrays. |
| CAN interface and wiring restriction | CAN communication with other devices and controller arrays; connect only CAN L and CAN H between controllers, without connecting GND or 5VController arrays. |
| Motor sensor interface | Sensor port for ABI, Hall and magnetic precision encoders |
| Debugging, communication and programming interfaces | SWD for chipset access, diagnostics, debugging and real-time data; COMM for I2C, ADC and UART, including Arduino or Raspberry Pi control; USB for programming |
| Input adjustment, operation and telemetry | Throttle curves and ramping for all input sources; seamless four-quadrant operation; motor revolution, amp-hour and watt-hour counting; real-time data analysis and readout through communication ports |
| Configurable protection limits | Adjustable battery voltage, motor and battery current, power, motor and ESC temperature, regenerative braking current, and ERPM/RPM limits; separate motor/input regenerative limits and speed limits for each direction |
| Cooling and installation requirements | Forced water cooling required; metal container recommended; provide sufficient controller space, unobstructed cooling-tube routing and adequate cooling-water flowInstallation in a sealed container. |
| Recommended short-circuit protection | Electronic switch with short-circuit protection or a BMS with switching recommended; a contactor alone without short-circuit protection is not recommendedBetween the ESC and battery. |
| Switching restriction | Do not disconnect the relay or electronic switch during use; resulting electromagnetic interference may damage the controllerDuring operation. |
| Duty-cycle control limitation | Use restricted to fighting robots, 3F prototyping and drone applications; these modes cannot fully disconnect battery power and require the battery to absorb braking energyPPM Duty Cycle or Duty Cycle No Reverse control. |
| Applications | Electric skateboards, fighting robots, e-bikes, electric motorcycles, efoils, electric surfboards, watercraft, electric boats and underwater ROVs |
| Initial commissioning | Test at low voltage and low throttle before gradually increasing voltage and throttleBefore initial operation. |
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