P2 ES evaluation system prototype wings

February 26, 2020

Last year Parallax released their latest multicore processor, the Propeller2 or P2X8C4M64P to give it, its full name. It’s been a very long time coming and after a few setbacks it is finally here. It’s specs are very good, featuring 8x 32-bit cores (or cogs as Parallax likes to call them), 512K RAM and 64 GPIO with SmartPin features.

I got my P2 evaluation system (ES) board a few weeks back and designed a couple of P2 ES prototyping wings to go with it.

The first prototyping wing (on the right) is a classic proto board with I/O from two GPIO ports. The other prototyping wing is a breadboard design for faster circuit build and test and features a 3x LED’s and 2x switches

I’ve got a few spare PCB’s which I’ll put on my Tindie store.


RC2014 enhanced prototype board now on Tindie

July 19, 2019

I’m please to announce that the enhanced prototype board/PCB for the RC2014 Bus I blogged about back in May is now on Tindie.

Also it’s schematic is here.


Apple II Prototyping PCB’s

June 29, 2018

I recently came into possession of a Apple IIe (an enhanced Apple II from the early 80’s) and decided to build a few PCB’s to help get this old warhorse back up in running. The first board  designed was an extender card for the Apples expansion card to make testing and fault finding them a little easier. The second PCB was a prototyping board to allow me to build up various test circuits.

 

Both will be available on Tindie soon


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:

http://dangerousprototypes.com/docs/Sick_of_Beige_standard_PCB_sizes_v1.0

sb-db9_2_small
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

Uses:
– Industrial Control
– Robotics
– Mechatronics

As usual you can find them on my Tindie page here


New add-on Pi boards – RPi-X PIAC and RPiB+ Breakout+ for sale

October 31, 2014

We’ve finally managed to find time to list two new boards on Tindie.

The first is RPi-X PIAC which is an experimenter add-on board for small industrial control projects. It feature 4x Relays (Change Over), 4x Opto-Isolated Inputs and 4x Analogue Inputs (0V to 10V). It also has a RS485 serial interface for communicating with industrial networks. You can find them here

RPi_PIAC_small

The second board is RPiB+ Breakout+ which is a breakout board for the Raspberry PI B+ I/O signals. It features 2x SPI headers, 2x I2C headers, 2x UART headers and 2x GPIO headers. It also has a prototyping area which is useful building your own circuits. It is compatible with the HAT board size and has a EEPROM (currently not fitted) for future HAT configuration. You can find them here

RPiB+_Breakout!_small


HATS on for Raspberry Pi B+

August 14, 2014

4 new PCB’s arrived in the post today. These are my first HAT’s (Hardware on Top) for the Raspberry Pi B+.

RPiB+_HATs_small

Top (L-R) – UserPort and Breadboard+, Bottom (L-R) – DIO32 and Breakout!+

All the boards adhere to the standard HAT size and include a ID EEPROM.

UserPort is probably my favourite. It’s a mimic of the BBC’s micros digital User Port and Analogue Port. Digital I/O is provided by a I2C MCP23017 16-channel Port Expander and Analogue Inputs by a 4-channel SPI MCP3004 10-bit ADC.

Breadboard!+ is a reworking of my earlier 170-pin Breadboard module but the extra size for a HAT PCB has allowed the inclusion of a two tactile push switches and three LED’s. As well as these, there’s also 4x Analogue Inputs using a 4-channel MCP3004 10-bit ADC.

DIO32 is a 32-channel Digital I/O board with two MCP23017 I2C Port Expanders.

Breakout!+ allows easy access to the I2C, SPI and UART interfaces and includes a small prototyping area for building circuits on.

Hope to have them on our Tindie store soon đŸ™‚


Raspberry Pi Industrial Automotive Controller photos

June 24, 2014

Here’s a photo of a finished RPi-X PIAC experimenter module:

RPi_PIAC_small
OK what does PIAC stand for?

PIAC = Pi Industrial Automotive Controller

It’s a Pi expansion shield that has 4x Change Over (CO) relays, 4x Opto Isolated Digital inputs and 4x 0V to 10V Analogue Inputs. There’s also a RS485 interface to communicate with industrial networks.

You can use it to learn about industrial control or perhaps even use it on your own small control projects.

I hope to have it stocked in our Tindie store soon:

https://www.tindie.com/stores/DTronixs/