Schematics for the Chipstomp

Here are the schematics for the Chipstomp.
I’ve tried to keep as much compatibility with the original DP32 circuit but I have removed superfluous elements such as the on-board potentiometer and one of the user leds. I’ve also added an additional tactile button, the OLED and resistor mixed Stereo to Mono input/outputs.
Other than that it’s essentially just a joining of the ChipKit DP32 with the Stomp Shield.
ChipStomp v1 (PDF 90Kb)Eagle CAD schematic – Zipped (88Kb)

Schematic v1

Chipstomp version 1 schematic PNG (2300×1500px, 80Kb)

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Drum machine progress : From prototype to version 2

I’ve not posted in a long time so here’s a quick update on the progress of my drum machine. It’s come a fair way from the initial prototype documented in this post back in July 2012.

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A sneak look at version 2 with a new 32bit PIC and a new larger LCD

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Breakout board for Nokia 1202 LCD

I’ve been using Nokia 5110 LCD screens for a while now they’re 84x48px have a built-in back-light and are really easy to use and quite cheap.  Recently though whilst working on my drum machine I found myself wishing for a few more pixels.  I want to show a “pattern view” of 16 tracks with 16 steps plus some additional information and 84×48 was getting too tight.

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This isn’t a Nokia1202, this is a Sparkfun Nokia 5110 breakout

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Eagle CAD files for lighthouse circuit

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For any one that is interested I have tidied up the Eagle CAD files for my lighthouse circuit.  You can grab them here. They’re not perfect and are probably not suitable for sending to a PCB production company but they might give you a head start of making your own version.

They’re saved from Eagle CAD version 5.6.0 so you’ll need to go to thier site to get that if you don’t have the latest version.