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Rpi dbt03

bildschirmtext·rpi-dbt03·rpi_dbt03_2/rpi_dbt03.kicad_pcb

Rpi dbt03 PCB layout, top view — open source AVR/Arduino board by bildschirmtext

About the Rpi dbt03 PCB

Rpi dbt03 is an open source AVR/Arduino PCB design by bildschirmtext, published on GitHub under the MIT license. It is a 2-layer board measuring 64 × 56 mm, with 36 components from 18 distinct parts.

Its main chip is the ATmega8L-8PU, from the AVR/Arduino family. Other key parts include the SFH617A-1. By type, the board carries 13 resistors, 6 capacitors, 5 diodes, 4 ICs, 3 switches and 2 connectors.

From the project

Hardware, Software and Firmware for a Raspberry Pi to DBT-03 adapter

There is now a possibility to directly patch a Bookworm Raspbian image.

Run ./patchimage.sh as root. It only works on uncompressed images. You can then dd` that image onto your SD-card or use the Raspberry Pi Imager. The later also allows you to set settings. The image will reboot multiple times.

The boot partition can also hold a btxconfig.txt` file where you can configure the host to connect to.

Main components on the Rpi dbt03

ATmega8L-8PUSFH617A-1

Rpi dbt03 bill of materials (BOM)

36 components, 18 distinct parts.

QtyPartRefs
1
ATmega8L-8PU
U1
3
SFH617A-1
U2, U3, U4
1
BC546
Q1
1
8MHz
Y1
1
Conn_02x02_Counter_Clockwise
J1
1
Conn_02x03_Odd_Even
J2
1
Raspberry_Pi_2_3
RP1
3
SW_Push
SW1, SW2, SW3
5
LED
D1, D2, D3, D4, D5
2
KERKO 15P
C1, C3
1
EB-A 10U 63
C2
2
TANTAL 2,2/16
C4, C5
1
TANTAL 2,2/16
C6
5
470
R1, R5, R6, R13, R14
3
10k
R2, R3, R4
1
1M
R8
1
0r
R9
3
2k2
R10, R11, R12

Rpi dbt03 design files

The KiCad project lives in the bildschirmtext/rpi-dbt03 repository on GitHub; these links point at the commit this page was built from.

Rpi dbt03: common questions

What microcontroller does the Rpi dbt03 use?

The Rpi dbt03 is built around the ATmega8L-8PU, from the AVR/Arduino family.

How big is the Rpi dbt03 PCB?

The Rpi dbt03 measures 64 × 56 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Rpi dbt03?

36 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Rpi dbt03 design files?

From the bildschirmtext/rpi-dbt03 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Rpi dbt03 design in my own project?

Yes, under the terms of its MIT license, which bildschirmtext chose for the repository.

Can I test firmware for the Rpi dbt03 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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