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.
I found some time to convert my hand drawn notes into a proper Eagle Cad schematic.
This is a project I’ve been working on for over a year but haven’t had the time to complete yet. Electronics takes second place to children… 🙂
It’s a mini drum machine modelled on classic machines like the Roland TR808. My version is digital, playing samples rather than analogue and uses a single pic24 to do the work.
I thought I’d have a go at getting my PWM controller PCB made professionally.
I have been playing around with building a lamp for my desk using a LED strip and constant current driver that I bought from Deal Extreme a while ago combined with a PIC12f683 to provide variable brightness via Pulse Width Modulation (PWM).
[UPDATE OCT 20 2010] I’ve updated the firmware for this project to include new features. More info and firmware download here.