Baumsatz
About the Baumsatz PCB
Baumsatz is an open source AVR/Arduino PCB design by HaCraFu, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 88.9 × 98.7 mm, with 21 components from 11 distinct parts.
Its main chip is the ATtiny85-20S, from the AVR/Arduino family. By type, the board carries 8 diodes, 6 resistors, 2 capacitors, 1 IC, 1 connector and 1 battery holder.
From the project
HaCraFu e.V. assembly kits
Main components on the Baumsatz
Baumsatz bill of materials (BOM)
21 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATtiny85-20S | SOIC-8W_5.3x5.3mm_P1.27mm-breiter | U1 |
| 1 | Pins_Attiny | PinHeader_2x04_Attiny | J1 |
| 1 | Battery_Cell | Batteryholder | BT1 |
| 1 | SW_SPST | Switch_MSS22D18 | SW1 |
| 1 | USB_A | usb-PCB | USB1 |
| 6 | LED | LED_1206 | D1, D2, D3, D4, D5, D6 |
| 2 | 3.6 | Z-Diode Minimelf | D7, D8 |
| 1 | 0.1u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | 4.7u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2 |
| 5 | 66.5 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R3, R4, R5 |
| 1 | 1K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
Baumsatz design files
The KiCad project lives in the HaCraFu/assembly-kits repository on GitHub; these links point at the commit this page was built from.
- Layoutbaumsatz/baumsatz.kicad_pcb
- Schematicbaumsatz/baumsatz.kicad_sch
Baumsatz: common questions
What microcontroller does the Baumsatz use?
The Baumsatz is built around the ATtiny85-20S, from the AVR/Arduino family.
How big is the Baumsatz PCB?
The Baumsatz measures 88.9 × 98.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Baumsatz?
21 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the Baumsatz design files?
From the HaCraFu/assembly-kits repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Baumsatz design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Baumsatz without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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