2 layers136 × 125.3 mm
Dm pcb batch
enliktjioe/three-workshops
HfK Bremen - Three Workshops course from Ralf Baecker
11 partsGPL-3.0
2 layers136 × 125.3 mm
Dm pcb batch
rlfbckr/workshops- Size
- 136 × 125.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 10
- Pads
- 43
- Tracks, vias
- 66, 5
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 May 2025
- Updated
- 20 May 2026
Overview
Dm pcb batch is an open-source printed circuit board by rlfbckr, from the rlfbckr/workshops repository on GitHub. It is a 2-layer board of 136 × 125.3 mm with 16 parts on 10 nets, routed with 66 tracks and 5 vias.
It is built around the ATTINY85-20PU and SFH 309. Its parts include 4 resistors, 2 capacitors, 2 diodes, 1 IC and 1 transistor. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mdworkshops
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100n | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C1, C2 |
| 2 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R3 |
| 2 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R4 |
| 2 | LED | LED_THT:LED_D3.0mm | D1, D2 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 1 | ATtiny85-20P | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Multicomp_BC-2001_1x2032 | BT1 |
| 1 | SFH309 | LED_THT:LED_D3.0mm_Clear | Q1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | Speaker | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | LS1 |
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Questions
How big is the Dm pcb batch PCB?
It measures 136 × 125.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dm pcb batch use?
16 parts, built around the ATTINY85-20PU and SFH 309. 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 Dm pcb batch KiCad files?
From the rlfbckr/workshops repository on GitHub, at the commit this page was made from: the board is kicad/dm_pcb_batch/dm_pcb_batch.kicad_pcb and its schematic kicad/attiny_minimal/pcb/attiny85_minimal/attiny85_minimal.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dm pcb batch design in my own project?
Its repository states no licence, so its author keeps all rights: ask rlfbckr before reusing the design.