HardLabs

CBM-D9096

InsaneDruid·CBM-D9096·cbm-d9096/cbm-d9096.kicad_pcb

CBM-D9096 PCB layout, top view — open source AVR/Arduino board by InsaneDruid

About the CBM-D9096 PCB

CBM-D9096 is an open source AVR/Arduino PCB design by InsaneDruid, published on GitHub. It is a 2-layer board measuring 90.2 × 68.6 mm, with 28 components from 23 distinct parts.

Its main chip is the ATmega1284-P, from the AVR/Arduino family. Other key parts include the 75160, 75161, TXU0304 and L78L33ACZ_TO92. By type, the board carries 9 capacitors, 8 connectors, 5 ICs, 4 resistors, 1 crystal and 1 jumper.

It belongs with the power & battery designs in this gallery.

From the project

Cost- and feature-reduced version of the PetSD+ from Nils Eiler, designed specifically for headless operation in an external enclosure, connected with a true GPIB cable, similar to a 9060 or 9090.

To use the 5V SPI SD-CARD header, JP1 needs to be set to position 2-3 (leftwards)

The one marked 3.3V SPI SD-CARD (J5) is operating at 3.3 volts using a TXU0304 SPI level shifter and a 3.3V regulator.The card modules attached here don't need (and should not have!) their own level shifters. This applies to nearly all readily available full size SD card modules. Note: this port supplies 3.3V OR 5V to the card module. Select the appropriate pin depending on the card module to connect.

CBM-D9096, from the project README
From the project README

Main components on the CBM-D9096

ATmega1284-P7516075161TXU0304L78L33ACZ_TO92

CBM-D9096 bill of materials (BOM)

28 components, 23 distinct parts.

QtyPartRefs
1
ATmega1284-P
U1
1
75160
U2
1
75161
U3
1
TXU0304
U4
1
L78L33ACZ_TO92
U5
1
16 MHz
Y1
1
IEEE488 Header
J1
1
LED
J2
1
SD CARD
J3
2
WP/CD Jumper
J4, J6
1
SD CARD
J5
1
RESET
J7
1
Barrel_Jack
J9
1
3.3V port enable/disable
JP1
3
100 nF
C1, C2, C3
1
47µF/16V
C4
1
10nF
C5
2
18 pF
C6, C7
1
330nF
C8
1
100nF
C9
Show 3 more
QtyPartRefs
1
330R
R1
2
75R
R3, R4
1
10K
RN1

CBM-D9096 design files

The KiCad project lives in the InsaneDruid/CBM-D9096 repository on GitHub; these links point at the commit this page was built from.

CBM-D9096: common questions

What microcontroller does the CBM-D9096 use?

The CBM-D9096 is built around the ATmega1284-P, from the AVR/Arduino family.

How big is the CBM-D9096 PCB?

The CBM-D9096 measures 90.2 × 68.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CBM-D9096?

28 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the CBM-D9096 design files?

From the InsaneDruid/CBM-D9096 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CBM-D9096 design in my own project?

The repository has no license, so all rights stay with InsaneDruid. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the CBM-D9096 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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