This work is licensed under the MIT License.
So I had the idea to develop a central control unit for PC fans, more precisely, one for a mobile rack that also houses computers. Then I could control the fan speeds independently of the individual computers. As I said, I needed this for my rack, which I used for learning and experimenting, so I built a simple PCB with a case for this purpose.
Show Bill Of Materials(BOM) ---->
| Designator | Footprint | Quantity | Value | LCSC Part # |
|---|---|---|---|---|
| C1 | 0805 | 1 | 10uF | C2897295 |
| C2 | CP_Radial_D10.0mm_P5.00mm | 1 | 1000uF | C10750 |
| D1 | D_SMA_Handsoldering | 1 | Diode | C22452 |
| J1 | TerminalBlock_4Ucon_1x02_P3.50mm_Horizontal | 1 | Power IN | C695629 |
| J2 | PinHeader_1x04_P2.54mm_Vertical | 1 | Prog | C52016392 |
| J3 | PinHeader_1x04_P2.54mm_pclüfter | 1 | Lüfter1 | C722747 |
| J4 | PinHeader_1x04_P2.54mm_pclüfter | 1 | Lüfter2 | C722747 |
| J5 | PinHeader_1x04_P2.54mm_pclüfter | 1 | Lüfter3 | C722747 |
| J6 | PinHeader_1x04_P2.54mm_pclüfter | 1 | Lüfter4 | C722747 |
| J7 | PinHeader_1x04_P2.54mm_pclüfter | 1 | Lüfter5 | C722747 |
| Q1 | TO-263-2 | 1 | IRF9Z34NSTRLPBF-JSM | C21714355 |
| Q2 | TO-92 | 1 | Transistor 45V 100mA | C900800 |
| R1 | 0805 | 1 | 2.2kΩ | C17520 |
| R2 | 0805 | 1 | 10kΩ | C84376 |
| R3, R4 | 0805 | 2 | 1kΩ | C95781 |
| SW1 | SW_SPST_SKQG_WithStem | 1 | Reset | C116647 |
| SW2 | SW_SPST_SKQG_WithStem | 1 | Boot | C116647 |
| U1 | SOT223-3_ONS | 1 | NCP1117LPST33T3G | C146799 |
| U2 | ESP-12E | 1 | ESP-12F | C82891 |
| Quote from LCSC: $21.43 Quote from JLCPCB: $28,68 |