Sick of Beige (SoB) board – DB9

January 9, 2017

Whilst looking to build some breakout boards I remembered the Sick of Beige (SoB) “standard” of PCB footprints designed by Dangerous Prototypes. DP have made a really cool set of PCB footprints in various sizes with the added bonus of being designed to be case friendly.

Dangerous Prototypes have a great page describing the various PCB sizes here:

My first Sick of Beige (SoB) board is SoB DB9, using the DP5050 footprint. This is a handy little breakout board for those wanting to build their own 9-way D-Type interfaces be it for RS232, RS485, CAN bus or any other project.

A standard 9-way D-Type (Male) connector provides the interface with 3.5mm Screw Terminals connections provided for easy interfacing. In addition a Male Pin Header connections is also provided. Two small circuit prototyping areas are also provided.

Board Details:

– 9-Pin D-Type connector (Male)
– Easy to Connect Headers
– 3.5mm Screw Terminals
– 2.54mm Pin Header
– small circuit prototyping area x2
– Compatible with Sick of Beigh DP5050 footprint
– Board Dimensions: 50 x 50 mm
– 3.2mm Mounting Holes x4

– Industrial Control
– Robotics
– Mechatronics

As usual you can find them on my Tindie page here

MIDI breakout board for Raspberry Pi (v0.10)

March 18, 2012

** UPDATE #2 ** Check out latest post & board revision here
** UPDATE: You’ll be able to get these boards soon at in the DTronixs store

This is a simple Serial based MIDI breakout board for the Raspberry Pi.

It uses the Raspberry Pi hardware UART RX and TX from its expansion port to provide a “MIDI In” and “MIDI Out” function.  The board was designed in DesignSpark PCB and the schematic is here

RS232 Breakout Board for Raspberry-Pi

January 25, 2012

The Raspberry-Pi  will be with us soon. In the mean time I would like to share a little RS232 breakout PCB I”ve designed for use with the RPi.

It”s a simple RS232 circuit using a MAX3232 chip connected to the UART Rx and Tx of the RPi.

I”ve not included any mounting holes as I don”t know if the final RPi will have any, although I hope to add some for the next version. It was pointed out on the RPi forums that the RPi’s 3.3v supply is limited to 50mA so I may add a 3.3V regulator to the circuit. A MCP1703 from Microchip was recommended, The addition current from an additional  3.3V regulator will useful if you want to use the prototyping area on the breakout board. That said the RPi’s 3.3V at 50mA is enough for the MAX3232 by itself.

The design was done in DesignSpark PCB and I”ll post the design files and gerbers in due course and I expect to get some finished PCB”s after the Chinese New Year

Initial schematic for v0.10 is here