QT-MOD-BODYACTIVE
Body Controller
STM32 / GD32 master controller: monitors the resistance motor and shifter over CAN, speaks BLE / ANT+ fitness protocols
STM32GD32CANBluetooth LEANT+
Scenario · Fitness & Light Mobility
Fitness Equipment & Light Mobility IoT
Body controller + motor board + wireless shifting + mini gateway to cloud — connecting training equipment to the BLE / ANT+ ecosystem
For makers of fitness and cycling equipment: a CAN-bus body controller and motor controller board, BLE / ANT+ wireless electronic shifting, and an ESP32 mini gateway that uploads equipment data to a public cloud for collection and analytics. Already delivered as an equipment IoT project for a fitness-industry customer.
Problems to solve
- 01Connecting to training ecosystems such as Zwift means implementing the BLE / ANT+ fitness protocols correctly
- 02The feel of resistance, road simulation and virtual gears depends on the controller’s real-time performance
- 03Member operations and content services only become possible once data is in the cloud
Architecture
- 01Control
- Body controller (CAN master, BLE / ANT+)
- Micro brushed-motor controller
- Wireless electronic shifting (nRF52832)
- 02Gateway
- ESP32 mini gateway, MQTT to cloud
- 03Cloud & app
- Data collection and monitoring, training-plan analytics
What we handle
- Controller hardware / firmware, protocol implementation, gateway and cloud integration
What you bring
- Equipment mechanical and motor parameters, target ecosystems and the list of protocols
Delivery process
- 011 wk
Assessment & selection
Scenario, volume, certification and delivery requirements → selection proposal
- 021–2 wks
Design & quote
Block diagram, platform and protocol stack, BOM range
- 034–8 wks
Hardware / firmware
Schematic, PCB, enclosure, firmware and cloud integration
- 042–4 wks
Prototype validation
Prototypes, integration and test report
- 054–6 wks
Certification & pilot
Certification by market, pilot-run yield
- 06Ongoing
Mass production
Test fixtures, production files, OTA and after-sales
FAQ
What cooperation models are available?
Four: full ODM, module + firmware, software-only with cloud platform integration, and AI application development. Light customisation of existing products is also an option.
How are IP and confidentiality handled?
We can sign an NDA. Ownership of the design deliverables from a custom project is set out explicitly in the contract, and the customer’s own designs and materials are used only for that project.
Products used
QT-MOD-MOTORACTIVE
Micro Brushed-motor Controller Board
STM32 design: CAN-bus control, encoder closed-loop positioning, stable and low-power
STM32CANUART
QT-MOD-SHIFTACTIVE
BLE / ANT+ Dual-protocol Wireless Electronic Shifting
Nordic nRF52832 design: wireless shifting actuator + low-power wireless shifter, for cycling and fitness equipment
nRF52832Bluetooth LEANT+UART
QT-GW-ESPACTIVE
ESP32 Mini IoT Gateway
Compact Wi-Fi + Bluetooth gateway that connects field devices to the cloud
ESP32Wi-FiBluetooth LEMQTT