HardLabs

Bus beaglebone

makerbus·bus_beaglebone·rev_c/bus_beaglebone.kicad_pcb

Bus beaglebone PCB layout, top view — open source AVR/Arduino board by makerbus

About the Bus beaglebone PCB

Bus beaglebone is an open source AVR/Arduino PCB design by makerbus, published on GitHub. It is a 2-layer board measuring 100 × 50 mm, with 44 components from 31 distinct parts.

Its main chip is the ATMEGA324_DIP40, from the AVR/Arduino family. Other key parts include the 74HCT08, MCP2562 and MCP7940. By type, the board carries 10 resistors, 8 capacitors, 4 ICs, 3 connectors, 2 crystals and 2 diodes.

It belongs with the usb & debug tools designs in this gallery.

From the project

Beagle Bone Black with a Bus Connector

A Beagle Bone Black that can be connected to a bus.

The bus is a half-duplex multi-drop bus that runs at 500 Kbps. It uses a Microchip MCP2562 CAN bus transceivers to connect to the bus.

The schematic can be found in the reva folder as busraspberrypi.pdf`.

The power comes in on either N1 or N2. These two connectors are "daisy-chained" so that power can be routed to other boards. The power goes through Q1 -- a P-channel MOSFET with a very low Rds. Q1 is used to prevent reverse polarity damage just in case the power comes in reversed. The power continues to N6 which is a 5V DC-to-DC power…

Main components on the Bus beaglebone

74HCT08MCP2562ATMEGA324_DIP40MCP7940

Bus beaglebone bill of materials (BOM)

44 components, 31 distinct parts.

QtyPartRefs
1
74HCT08
U1
1
MCP2562
U2
1
ATMEGA324_DIP40
U3
1
MCP7940
U4
1
FQP47P06
Q1
1
16MHz
X1
1
32.768KHz
X2
1
TERMINATE_JUMPER
J1
1
LED_JUMPER
J2
1
OKI-78SR-5/1.5-W36-C
N6
1
CR-2032/VCN
BAT1
2
OSTTC020162
N1, N2
2
BHR-10-HUA
N3, N9
2
FTDI_HEADER
N4, N5
1
AVR_ISP_HEADER
N7
1
SERIAL_CONNECTOR
N8
1
BBB_P9_HEADER
N10
3
KEY
N11, N12, N13
1
MJTP1243
SW1
1
SD101C-TR
D1
Show 11 more
QtyPartRefs
1
LED
D2
2
18pF
C1, C2
4
.1uF
C3, C4, C5, C7
2
1uF
C6, C8
1
22K_SIP5
R1
2
22K
R2, R7
1
120 1%
R3
1
10K
R4
2
470
R5, R6
1
33K_SIP5
R8
2
4K7
R9, R10

Bus beaglebone design files

The KiCad project lives in the makerbus/bus_beaglebone repository on GitHub; these links point at the commit this page was built from.

Bus beaglebone: common questions

What microcontroller does the Bus beaglebone use?

The Bus beaglebone is built around the ATMEGA324_DIP40, from the AVR/Arduino family.

How big is the Bus beaglebone PCB?

The Bus beaglebone measures 100 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bus beaglebone?

44 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bus beaglebone design files?

From the makerbus/bus_beaglebone repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Bus beaglebone design in my own project?

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

Can I test firmware for the Bus beaglebone 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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