Fancontroller Rev 1.0
Description
- Main Controller
- ESP32-WROOM-32E
- Onboard
- DC Input (12V, 5.5x2.1mm)
- Serial flashing header (100mil & SOCbite)
- 4x FAN PWM Header
- Status LED (red)
- HDC1080 Temperature & Humidity sensor
- IO
- Reset / Boot Buttons
- 3x User Buttons
- 2x External Input (100mil)
- I2C Expansion Port (100mil, SCL, SDA & Int)
Example Config File
Board
ESP32 Pin Assignment
| Pin | Usage |
|---|---|
| GPIO0 | Boot Button, Push to enter flashing mode |
| GPIO1 | Serial TX |
| GPIO2 | Builtin LED, Low=On |
| GPIO3 | Serial RX |
| GPIO4 | Fan 4 PWM |
| GPIO5 | Unused (strapping pin) |
| GPIO12 | Unused (strapping pin) |
| GPIO13 | Fan 3 Speed Sense |
| GPIO14 | Unused (outputs PWM at boot) |
| GPIO15 | Unused (outputs PWM at boot, strapping pin) |
| GPIO16 | Fan 4 Speed Sense |
| GPIO17 | I2C SDA (HDC1080 + expansion header) |
| GPIO18 | I2C SCL (HDC1080 + expansion header) |
| GPIO19 | I2C INT (expansion header) |
| GPIO21 | User Button 3 |
| GPIO22 | User Button 2 |
| GPIO23 | User Button 1 |
| GPIO25 | Fan 2 PWM |
| GPIO26 | Fan 2 Speed Sense |
| GPIO27 | Fan 3 PWM |
| GPIO32 | Fan 1 PWM |
| GPIO33 | Fan 1 Sense |
| GPIO34 | External Input 1 |
| GPIO35 | External Input 2 |
| GPIO36 | Unused |
| GPIO39 | Unused |
I2C Expansion Port
The board offers an I2C extension port above Fan 4.
| Nr. | Pin - | Description |
|---|---|---|
| 1 | GND | |
| 2 | INT | GPIO 19 |
| 3 | SCL | GPIO 18, 4.7k Pull-Up |
| 4 | SDA | GPIO 17, 4.7k Pull-Up |
| 5 | +3V3 |
External Input Port
The board offers two external inputs, e.g. for a door intrusion alarm or a 100% power switch.
| Nr. | Pin - | Description |
|---|---|---|
| 1 | GND | |
| 2 | IN2 | 10k Pull-Up |
| 3 | IN1 | 10k Pull-Up |