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Body Controller

STM32 / GD32 master controller: monitors the resistance motor and shifter over CAN, speaks BLE / ANT+ fitness protocols

STM32GD32CANBluetooth LEANT+
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Overview & features

The master controller for home training equipment. It monitors the resistance-motor controller and shifter signals over CAN bus, drives peripherals such as lighting and the dashboard display, and supports BLE / ANT+ wireless control with fitness protocols (including FE-C and ERG mode). The motor controller reports cadence, speed, power and grade at regular intervals; the body controller sends down 1–24 virtual gear ratios, road-feel simulation and brake / steering signals.

Key features

  • CAN bus master for the resistance-motor controller, shifter controller, lighting controller and dashboard
  • BLE / ANT+ fitness protocols, including FE-C and ERG mode
  • 1–24 virtual gear ratios and road-feel simulation (vibration patterns for different road surfaces)
  • Resistance motor rated at 400W, 2500W peak; self-generating power supply

Specifications

Platform

MCUSTM32 / GD32 (per project)

Bus & communication

BusCAN
WirelessBLE / ANT+ (fitness protocols, FE-C)
Motor controller TXCadence, speed, power (every 250ms); grade
Body controller TXResistance gear (1–24 virtual gears), road-feel simulation on / off, brake / steering and other control signals

Motor controller

FunctionsVirtual gear ratios, road-feel simulation, Bluetooth / ANT+, FEC, ERG mode
PowerRated 400W, peak 2500W
SupplySelf-generating DC supply

Applications

Fitness & Light Mobility

FAQ

How soon will I hear back after submitting an inquiry?

Usually within 4 hours during working hours. For requests involving a custom solution, an engineer gets in touch within one working day to confirm the details.

Why doesn’t the site show prices?

Hardware and solution pricing depends on quantity, degree of customisation, certification and delivery requirements, so we issue a formal quote against each inquiry. Reference prices and MOQs for standard items are available when you inquire.

Is there a minimum order quantity?

Samples and small pilot runs are both available; the mass-production MOQ is stated in the quote and depends on the product and its materials.

Can you help with certification?

Yes. We arrange testing and certification for the target market — CCC, CE, FCC, SRRC, RoHS and others — with cost and lead time itemised in the quote.

Can the devices connect to our own cloud platform?

Yes. The firmware supports MQTT / HTTP integration with your own platform or a public cloud IoT platform; you can also use our cloud platform and mini-program monitoring service.

How do you handle after-sales support and firmware updates?

Mass-produced products come with OTA firmware updates and technical support; repairs and replacements are handled under the warranty period agreed in the contract.

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