2 layers
2 layers94.5 × 64.5 mm
LF LAP TIMER
bismarx-v1/SchoolStuff1helo
- Size
- 94.5 × 64.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 34
- Pads
- 74
- Tracks, vias
- 63, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Dec 2023
- Updated
- 4 Nov 2026
Overview
LF LAP TIMER is an open-source printed circuit board by bismarx-v1, from the bismarx-v1/SchoolStuff repository on GitHub. It is a 2-layer board of 94.5 × 64.5 mm with 21 parts on 34 nets, routed with 63 tracks and 0 vias.
It is built around the ARDUINO UNO R3. Its parts include 9 resistors, 3 connectors, 3 switches and 1 capacitor. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdHewwo this is useless
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R5, R6, R9, R10 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 2 | 0R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 1 | 100nF | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | ARM | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | SW1 |
| 1 | Arduino_UNO_R3 | Module:Arduino_UNO_R3 | A1 |
| 1 | LCD TERMINAL | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-05P_1x05_P5.00mm | J3 |
| 1 | RESTART | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | SW3 |
| 1 | SENSOR TERMINAL | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-05P_1x05_P5.00mm | J2 |
| 1 | SENSOR TERMINAL | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1 |
| 1 | STOP | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | SW2 |
Questions
How big is the LF LAP TIMER PCB?
It measures 94.5 × 64.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LF LAP TIMER use?
21 parts, built around the ARDUINO UNO R3. 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 LF LAP TIMER KiCad files?
From the bismarx-v1/SchoolStuff repository on GitHub, at the commit this page was made from: the board is misc_projects/LF_LAP_TIMER/LF_LAP_TIMER.kicad_pcb and its schematic SPS_Prosek_stuff/PRG-BuJ/Programming/programovani-main/3EA/enkoder/pcb_encoder_filter/encoder_fiter/encoder_fiter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LF LAP TIMER design in my own project?
Its repository states no licence, so its author keeps all rights: ask bismarx-v1 before reusing the design.
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