It got a little wiry but it plays alright.. The following sample is a single note (until the end where I start to improvise The loop is made by the envelope only (decay time)

The original site of JAREK ZIEMBICKI is hereThere is this other guy named krüe who [...]]]>

The connections are simple now.

It got a little wiry but it plays alright.. The following sample is a single note (until the end where I start to improvise
The loop is made by the envelope only (decay time)

The original site of JAREK ZIEMBICKI is here
There is this other guy named krüe who modified a little the hardware (used an atmega 32 instead of atmega16 and a 16MHz osc instead of 8MHz) and added a lots of features. Source code included! here

A note. I found that the code on Jarek’s site didn’t work with my atmega16 so I got the hex file off here where they also sell ready made boards.

My sample is here

I decided to make JAREK ZIEMBICKI’s AVRSYN. But there were only the schematics and no board layout so I had to make my own. So I started laying it out on eagle but I got on a deadlock due to the fact that I didn’t want to make a double sided board. I would etch [...]]]>

I decided to make JAREK ZIEMBICKI’s AVRSYN. But there were only the schematics and no board layout so I had to make my own. So I started laying it out on eagle but I got on a deadlock due to the fact that I didn’t want to make a double sided board. I would etch it myself and double sided boards are a BIG pain in the but (vias and such, alignment etc). So I made it on a perfboard. But before that, I decided that it should be made into discrete modules. One for the microchip, one for the D2A (an R2R resistor ladder type) , one for the midi interface, one for the power supply and one for the switch multiplexer.

Here is the main part. I put pin headers to wherever it would connect to another module and got myself a lot of ribbon cable. The AVR is a really simple design. Only the layout makes it complicated. It can be made by anyone (Even I made one!!!).

There is an atmel AtMega8 µCU and 6 RGB leds. Two for hours, two for minutes and two for seconds.Each led can be Red, Green, Blue, or a combination [...]]]>

This is an octal RGB clock. I made it so it can be impossible to actually tell the time but nevertheless its beautiful (in its own way).

There is an atmel AtMega8 µCU and 6 RGB leds. Two for hours, two for minutes and two for seconds.

Each led can be Red, Green, Blue, or a combination of them. So you get eight colors, Red, Green , Blue, Magenta, Cyan, Yellow, White and Black (all off)

Lets say now that a led (with all its colours) is a binary number and Red is bit 0 (rightmost), Green is bit 1 and Blue is bit 2. With the above combinations you get a number between 0 and 7 (hence the octal part) . Two leds can count up to 64 this way. So you can count easily up to 60 seconds (and minutes)

eg: the time on the second photo is:

Red, Cyan : Green Cyan : Red Green=
1×8 + 6 : 2×8 + 6 : 1×8 + 2 =
14:22:10

Nice eh?

(wouldn’t sell though : )