Type-C Mini DC Rechargeable Fan Circuit Board with 3-Level Speed Control
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৳ 15.00৳ 30.00 (-50%)
This Type-C Mini DC Rechargeable Fan Circuit Board is an all-in-one charging and speed regulator module designed for portable, handheld fans [Image 1.3.2]. Powered by a standard 3.7V 18650 lithium battery, it features an integrated Type-C USB port for easy 5V recharging and dual status LEDs to indicate charging activity [Image 1.3.2, Image 1.4.7]. The onboard tactile switch allows users to seamlessly cycle through 3 levels of fan speed control, making it the perfect drop-in replacement motherboard for repairing or building custom portable cooling gadgets
The Type-C Mini DC Rechargeable Fan Circuit Board with 3-Level Speed Control is an upgraded, high-efficiency power management and speed regulation motherboard designed specifically for modern portable, handheld, and desktop USB mini fans [Image 1.3.2]. Engineered as a universal drop-in replacement or core DIY prototyping component, this miniature PCB integrates battery charging, step-up voltage regulation, and micro-switch logic control into a singular ultra-compact footprint [Image 1.3.2].
The board features a modern Type-C USB interface that accepts standard 5V DC input from any cellphone charger, power bank, or laptop port [Image 1.3.2, Image 1.4.7]. It manages safe charging cycles for a single-cell 3.7V Lithium-Ion battery (such as standard flat-top 18650 or 14500 cells) [Image 1.3.2]. Dual surface-mount LEDs provide real-time charging status feedback [Image 1.3.2]: one illuminates to show active power intake/charging, and the second shifts state or alters brightness once full battery capacity is safely reached.
Equipped with a highly resilient tactile micro-switch, the module functions via an easy single-button control routine [Image 1.3.2]. Each sequential press cycles the output power through three distinct pre-programmed fan speeds (Low, Medium, High) before shutting the system off [Image 1.3.2]. This makes it incredibly straightforward to regulate the airflow of miniature 5V or 3.7V brushless DC cooling motors [Image 1.3.2].
Explicit Terminal Pad Wiring Map
The reverse and sides of the PCB expose large, easily weldable copper solder pads designed for direct wiring [Image 1.3.2]:
- BAT+ (Battery Positive): Connects directly to the positive (+) node of your 3.7V lithium cell [Image 1.3.2].
- BAT- (Battery Negative): Connects directly to the negative (-) node of your 3.7V lithium cell [Image 1.3.2].
- M+ (Fan Motor Positive): Connects to the positive (+) lead of your small brushless fan motor [Image 1.3.2].
- M- (Fan Motor Negative): Connects to the negative (-) lead of your small brushless fan motor [Image 1.3.2].
Key Technical Specifications
| Feature | Specification |
|---|---|
| Input Charging Port | Type-C USB Female [Image 1.3.2, Image 1.4.7] |
| Input Supply Voltage | DC 5V / 1A (Standard USB Charger Compatible) [Image 1.3.2, Image 1.4.7] |
| Compatible Battery Type | 3.7V / 4.2V Lithium-Ion (18650 format recommended) [Image 1.3.2] |
| Speed Control Logic | 3-Level Progressive Step-Up Loop [Image 1.3.2] |
| Switch Type | Onboard Tactile Momentary Push Button [Image 1.3.2] |
| Status Indicators | Dual SMD LED Array (Charge / Full Telemetry) [Image 1.3.2] |
| Board Dimensions | Approx. 22mm x 20mm (Ultra-miniature footprint) |
Common System Applications
- Handheld Mini Fan Repair: Swapping out fried, original logic boards inside popular handheld summer cooling fans [Image 1.3.2].
- Custom Desktop Ticker Fans: Engineering custom small desk fans housed in custom 3D-printed or wood-carved structural cases.
- Portable Evaporative Cooler DIY: Serving as the multi-speed electronic control hub for small custom water-mist cooling projects.
- Miniature Air-Circulation Triggers: Controlling micro air-extraction fans inside localized electronic project enclosures or micro-greenhouse setups.
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