Piio’s and MiniPiio’s boards are now for sale on Tindie

October 29, 2013

Pii and MiniPiio Boards are now for sale on Tindie

Details are here:


Adding analog inputs to the Raspberry Pi

July 30, 2013

I’ve been testing the MiniPiio AIN4 board the last couple of weeks and I’m pleased to say it works well.


Here’s a picture of it mounted on the Pi.



New MiniPiio SimpleIO and RS485

March 24, 2013

We’ve got a couple of new MiniPiio boards in the works.

The first MiniPiio is SimpleIO which is 8x LED’s and 8x Tactile Switches connected to the GPIO signals. This is currently being manufactured, so we’ll let you know how it goes.


The second MiniPiio is a serial RS485 board. It’s the one I’ve been asked a lot for. The layout is finished and its going out for manufacture next week.

RPi_MiniPiio_Rs485 0v10

MiniPiio Boards now stocked by Elektronik Lavpris Aps

February 27, 2013

We are please to announce that our MiniPiio Boards are now stocked by

Elektronik Lavpris Aps of Denmark

You can find them on their website:


New PCB batch

November 25, 2012

We got a new batch of PCB’s yesterday.

In the packet were two new board designs and a revision to a favourite.

We’ll start with the new boards:

MiniPiio MIDI – MIDI In and Out functions with a pin header to wire straight to your DIN connectors,

MinIPiio Expander2 – A new carrier board which takes two different MiniPiio boards, doubling your MiniPiio fun! It has a on-board 3.3V power supply and cut-able tracks in case you need to isolate or swap signals.

Our favourite MiniPiio ProtoBoard was given a size makeover to make it a standard 40 x 50mm MiniPiio footprint. This allows it to work with the new MiniPiio Expander 2 board.

GitHub – Schematics and BoM’s

November 11, 2012

You can find our latest schematics and BoM’s on GitHub at https://github.com/DTronixs.

We’ll be adding more files over the following days

GertBoard arrives

October 25, 2012

My GertBoard kit finally arrived last week. For a while I was getting deja-vu of Raspberry Pi delivery saga again.

I’ve taken some pictures of what came but I’ve not had a chance to build it yet. I think we’ll have a GertBoard building session / workshop at the Maker Space on evening or weekend.

MiniPiio L293D board v0.10

September 7, 2012

** UPDATE: You can get these boards at tindie.com in the DTronixs store **

Here’s the second of the new Raspberry Pi MiniPiio add-on boards.

This is a DC Motor controller using the venerable L293D from ST (and others). The L293D is dual H-Bridge driver capable of driving 36V DC and 600mA per H-Bridge.

The board was designed in Design Spark PCB and the schematic is here.

Here’s the L293D board fitted to a Raspberry Pi:

and here’s the L293D and RPi driving a pair of small DC motors. Hope fully this will be a small robot in time for e-day the Newcastle Maker Space is talking part of at Gateshead Central Library on 29th September.

MiniPiio Relay2 Board v0.10

September 7, 2012

** UPDATE: You can get these boards at tindie.com in the DTronixs store

I meant to post this a few weeks back but holidays etc. got in the way, so here it is now.

So here we have a simple two relay DPCO board. Either of the relays can be selected from 8 off the GPIO pins from the Raspberry Pi expansion header.

Circuit schematic is here

and here it is on a Raspberry Pi

MiniPiio PCB (Batch #2) board’s arrive

August 8, 2012

We received our second batch of PCB’s from our manufacturer today.

In the package were 4 sets of blank PCB’s for the MiniPiio boards: MiniPiio_RS232 (v0.2) , MiniPiio_ULN2803 (v0.2) and two new board MiniPiio_Relay2 and MiniPiio_293D.

MiniPiio_Relay2 is a two relay board with dual change over relays and MiniPiio_293D is a Full-H Bridge motor controller based on the venerable 293D chip. More details to follow.


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