Bumper box of new PCB’s

July 30, 2015

A bumper box of 10 new (yes 10 designs) PCB’s arrived this week.

In it were 5 new (and updated) add-on boards for the Raspberry PC and 5 new boards for the Guitar Effect pedal designs I’ve been working on.

Here’s a photo of the PCB’s.

For the Raspberry Pi, we have a new revision for our popular PIIO ULNB803/GVS board which now features 2 stepper motor connectors for the popular 5v 28YBJ-48 stepper motor. A new revision for the PIAC with new screw terminals. A brand new Digi-IO which is a real world interfacing board with RS485, two relays and some level shifter for inputs. Another brand new PIIO design called “RasPellar” which is a IO co-processor board using the Parallax 32-bit 8-core Propeller CPU and a new HAT sized prototyping board that can be used by it’s self or with RasPeller.

For the guitar effects we have two designs for a “modular electronic effects pedal” or MEEP to its friend. The MEEP board design gives you access to the audio In and Out jack sockets, 9V power and Vb (4.5V) as well as the foot switch and features a true bypass while the effects are added via a smaller daughter board. So if you get sick of using one guitar  effect you can simply swap it out with a new effects daughter board for a lot less than buying a new pedal. MEEP BB3 (base board – 3 pots) has three Potentiometers (pots) and MEEP BB4 (base board – 4 pots) has 4 pots. To go with the MEEP base boards there is a prototyping board, MEEP Screamer a clone of the awesome Ibanez Tube Screamer pedal and MEEP Fuzzy yet another clone of the just as awesome Arbiter Fuzz Face.


New Pinout diagram for the Raspberry Pi B+ and 2

June 29, 2015

I’ve been a big fan of pighixxx infograph work since he released his ABC (Arduino Basic Connections) cards a few years back. His original Raspberry Pi pin-out sheet found a permanent home in the Pi notes folder, now he’s updated it for the Pi B+ and Pi 2. You can find it here:

http://www.pighixxx.com/test/2015/06/raspberry-pi-v2-mod-b-pinout/


List of Guitar Effect Pedals sites

May 29, 2015

I’ve recently been researching guitar effects pedals for a new project, so if you’ve never heard of Big Muff Pi, Arbiter Fuzz Face, Ibanez Tube Screamer or Pro Co Rat, check out the sites below to learn some more:

Big Muff Pi circuit versions
http://www.bigmuffpage.com/Big_Muff_Pi_versions_schematics_part1.html

Technology of the Tube Screamer
http://www.geofex.com/article_folders/tstech/tsxtech.htm

Various effects projects
http://www.generalguitargadgets.com/effects-projects
http://www.generalguitargadgets.com/how-to-build-it/technical-help/schematics

Great pedal site
http://www.electrosmash.com

French DIY pedals
http://www.coda-effects.com

Fuzz pedals
http://fuzzcentral.ssguitar.com

More pedal ideas
http://www.GuitarPCB.com

DIY FX’s
http://gaussmarkov.net

Vero (Stripboard) and tagboard effect layouts
http://tagboardeffects.blogspot.co.uk

Perf and PCB effects layouts
http://effectslayouts.blogspot.co.uk

Good range of PCB’s
https://aionelectronics.com

More DIY pedal designs
http://www.madbeanpedals.com

Lots of BOSS schematics
http://www.hobby-hour.com/electronics/s/guitar-effect-schematics.php

Great Forum
http://www.diystompboxes.com

stompboxology vintage newsletter
http://www.moosapotamus.net/stompboxology.html

http://www.super-freq.com/

http://diyguitarpedal.com

http://www.tonegeek.com

http://1776effects.com

Parts & Kits
http://www.mammothelectronics.com


Maker Faire UK 2015

April 27, 2015

Maker Faire UK 2015 is over for another year :-(

But it was another great weekend of meeting fellow makers and creatives from around the UK and the world.

With my fellow local makers, I was on the Maker Space stand with various great projects on display. Ed’s 1D Pong, my R-Kade, Jon’s Over Eng’d, Iain, Tommy and Alistair’s Christmas window (I know we’re into April), Glen’s 3D Printer and EggBot, Chris B’s LED cubes, Chris D’ custom retro console, Rosie with her sewing.

Hightlights of the weekend for me where:

Meeting up [again :-)] with Aaron from Oomlout was there again.

Likewise meeting up with Mitch Altman of TV-B-Gone fame and co-founder of Noisebridge was there again.

low cost pick n place machine from http://www.liteplacer.com/

mini cnc from http://www.minimillcnc.com/

LinkIT one from MediaTek and Seeed http://www.seeedstudio.com/depot/LinkIt-ONE-p-2017.html

and meeting a great number of other makers from the UK, Europe and rest of the world was great was well.

The Saturday night meet up in the Union Rooms for food and beer was a great night out. Lots and lots of people showed up and a few didn’t get back home until the very early hours on Sunday morning :-)


New Pi add-on board – RPi Breadboard+ for sale

April 15, 2015

RPi Breadboard+ is a solderless prototyping breadboard add-on for the Raspberry Pi. Using the breadboard and female to female wires you can quickly prototype and test your electronic design.

A large portion of the add-on is taken up by a 140-pin breadboard and surrounding the breadboard on all four sides are a number female headers.

All of the Raspberry Pi GPIO signals are brought out to two 16-pin female headers located near the top and bottom of the breadboard. 3.3V (5-pin), 5V (5-pin) and 0V/Ground (12-pin) power supplies are also brought out to female headers located to the sides of the breadboard.

The add-on features 3x LED’s (red, yellow and green) and 2x push-button tactile switches each having a 2-pin female header for easy use with the rest of the board.

Size wise it conforms to a standard HAT board size (65 x 56mm) and mounting holes. So its compatible with the Raspberry Pi A+, B+ and Pi2.

There is an EEPROM PCB footprint for future HAT configuration compatibly but its not fitted on this version.

RPi_Breadboard+_small

RPi_Breadboard+_RPi_small

You can find them on Tindie here.

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


Raspberry Pi ArcadeIO board

March 30, 2015

Here’s the first build of the Raspberry Pi ArcadeIO board. It originally started as a requirement to upgrade my R-Kade Pi based mini cabinet.

 

RPi_ArcadeIO_small

You can find them on Tindie here.

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


R-Kade getting a upgrade

February 27, 2015

The wiring in my Raspberry Pi mini arcade cabinet is getting a much needed upgrade.

I originally build R-Kade for Maker Faire 2013 and its been at various other Faire’s around the country and at eDay for the last two years. It was quickly build out of a bookshelves, old VGA monitor, WII arcade controller and a raspberry pi. The control board was removed from the WII arcade controller and the joystick and buttons wired directly to a prototyping board on the Pi. Unfortunately, it’s this wiring which is becoming a problem and needs redoing.

Rather than just strip out the wires and rewire new, I decided to make myself a better solution and have designed a Pi ArcadeIO board. The ArcadeIO board has screw terminals for connecting the wires to the Pi’s GPIO signals. In addition the GPIO signals have in-line resistors to limited the effects of any short circuits. There are addition screw terminal positions for connecting common grounds for the arcade switches and joystick.


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