Micro Brushed-motor Controller Board
STM32 design: CAN-bus control, encoder closed-loop positioning, stable and low-power

Round touch display + metered dispensing + heating control — a complete machine controller with run sequence and alarms
A control system for a liquid-dispensing instrument. The display shows time, run state and alarms (running / ready / positioning error / no cup / fill failure), liquid A / B fill volume (ml) and water temperature; the settings screen adjusts time, A / B fill volume, water temperature (ambient / heated), counter reset and machine reset. The run sequence covers self-check, cup drop, metered fill, cup delivery and cup discard, with temperature-hold logic.
| MCU | STM32 / GD32 (per project) |
|---|
| Time | Time display and setting |
|---|---|
| State / alarm | Running, ready, positioning error, no cup, fill failure |
| Metering | Live liquid A / B fill volume (ml) |
| Water temperature | Shows “ambient” when set to ambient, otherwise the set temperature (°C) |
| Items | Time, liquid A / B fill volume, water temperature (unheated / heated), counter reset, machine reset |
|---|
| Sensing | Discard-position micro switch, through-beam sensor, photoelectric switches at the cup-drop / fill / delivery positions, float switch |
|---|---|
| Pumps & heating | Purified-water pump, enzyme-solution pump, flow-meter verification; temperature hold (wait 15 min if above the upper limit; heat and wait 5 min if below the lower limit) |
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.
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.
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.
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.
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.
Mass-produced products come with OTA firmware updates and technical support; repairs and replacements are handled under the warranty period agreed in the contract.