Battery-Powered Fan Controller Design
Thought for 9 sec
Understood — I’ll keep the battery/charger architecture cost-conscious: common single-cell LiPo charging, minimal external parts, and avoid unnecessary display or cloud hardware unless needed. ESP32-C6 still covers BLE/Wi‑Fi without adding a separate radio.
Worked for 1 min 25 sec
I found low-cost battery options: TP4056 charger, JST-PH LiPo connector, a buck-boost 3.3 V rail for the ESP32, and an optional 5 V boost stage for the fan if the fan must run from the battery.
Worked for 7 mins 41 sec
Implemented the first-pass schematic for a low-cost rechargeable LiPo thermocouple fan controller with ESP32-C6 BLE/Wi‑Fi, MAX31855 K-type thermocouple input, TP4056 USB-C charging, 3.3 V buck-boost regulation, and PWM fan drive with optional 5 V boost. I also added project docs: spec, bring-up plan, firmware notes, and regulatory/safety notes. Initial ERC-style checks came back with no open warnings/errors in the checked categories.
Open items:
- Confirm fan voltage/current and whether it must run fully from the internal battery.
- Confirm desired runtime and battery capacity.
- Decide whether phone-only UI is enough or if you want a small display.
- Confirm thermocouple connector style: screw terminal vs proper miniature thermocouple jack.
Suggested next steps:
- Pick the actual fan/blower and battery capacity.
- Add battery voltage measurement so the phone UI can show charge level.
- Move to PCB layout with antenna clearance and charger/boost thermal placement.
- Add a basic ESP32 firmware skeleton for BLE/Wi‑Fi provisioning, thermocouple readout, and fan PID control.
Set fan and battery
Use 5V blower
Add battery sensing
Start PCB layout
Check BOM cost
Phone-only UI
