2 layers
2 layers40 × 62.8 mm
Tacho
f-zhuk/Tacho3ER11 spindle tachometer with rotating display output
- Size
- 40 × 62.8 mm
- Copper layers
- 2
- Thickness
- 0.12 mm
- Parts
- 33
- Nets
- 29
- Pads
- 86
- Tracks, vias
- 294, 28
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 22 Jan 2024
- Updated
- 30 Mar 2026
Overview
Tacho is an open-source printed circuit board by f-zhuk, from the f-zhuk/Tacho repository on GitHub. It is a 2-layer board of 40 × 62.8 mm with 33 parts on 29 nets, routed with 294 tracks and 28 vias.
It is built around the PY32F002AW15U, BAT54CW and MM3Z5V1B, with the WST2007 among its other parts. Its parts include 7 resistors, 7 diodes, 6 inductors, 5 capacitors and 2 ICs.
Main components
4
PY32F002AW15U
QFN16_3X3QFN16_3X3 New Arrivals ROHSPUYAUncategorised
BAT54CW
SOT-323-3-65℃~+125℃ 1 Pair Common Cathode 1V@100mA 200mA 2uA@25V 30V 600mA SOT-323-3 Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
MM3Z5V1B
SOD-323-55℃~+150℃ 1 Independent 130Ω 2uA@1.5V 300mW 5.1V 5V~5.2V SOD-323 Zener Diodes ROHShongjiachengZener Diodes
WST2007
SOT-363-55℃~+150℃ 1.4A 140mΩ@4.5V 2 N-Channel 20V 286pF 330mW 4.6nC@4.5V 42pF 43.6pF 600mV N-Channel SOT-363 MOSFETs ROHSWinsok SemiconMOSFETs
README
README.mdTacho
ER11 spindle tachometer with rotating display output
Demonstration video: https://youtu.be/U8TMPHPOaX0?si=c8lLyx_i4HfSOsvz
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100uH | USER:L_SHOUHAN _CY43-100UH | L1, L2, L3, L4, L5, L6 |
| 5 | 430R | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R4, R5 |
| 5 | LED | LED_SMD:LED_0402_1005Metric | D1, D2, D3, D4, D5 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C4, C5 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R6, R7 |
| 2 | 47uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3 |
| 1 | BAT54CW | Package_TO_SOT_SMD:SOT-323_SC-70 | D7 |
| 1 | DRV5013 | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | GND | TestPoint:TestPoint_Pad_D2.0mm | TP5 |
| 1 | MM3Z5V1B | Diode_SMD:D_SOD-323 | D6 |
| 1 | PY32F002AW15U | Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm | U2 |
| 1 | RST | TestPoint:TestPoint_Pad_D2.0mm | TP2 |
| 1 | SWC | TestPoint:TestPoint_Pad_D2.0mm | TP4 |
| 1 | SWD | TestPoint:TestPoint_Pad_D2.0mm | TP3 |
| 1 | VCC | TestPoint:TestPoint_Pad_D2.0mm | TP1 |
| 1 | WST2007 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q3 |
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Questions
How big is the Tacho PCB?
It measures 40 × 62.8 mm and has 2 copper layers, 0.12 mm thick.
What parts does the Tacho use?
33 parts, built around the PY32F002AW15U, BAT54CW, MM3Z5V1B and WST2007. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Tacho KiCad files?
From the f-zhuk/Tacho repository on GitHub, at the commit this page was made from: the board is Board/Tacho.kicad_pcb and its schematic Board/Tacho.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tacho design in my own project?
Its repository states no licence, so its author keeps all rights: ask f-zhuk before reusing the design.