SMD!!!!!!!!!

A (failed) experiment: I got 18F6621 samples from microchip.com (I LOVE these guys!!) and they are packaged in a TQFP64 package (a very dificult to use package if you are not a machine) so I decided to make a breakout box. Get those pins in pin header format so I can stick whatever I want to them. But I failed miserably. The design was haunted by the 8mil distance between the legs. It proved more (less) than my etching method could handle so I had heavy crosstalk between the leads.

And the soldering was no easy job too!!!!!

But if you feel adventurous, there are brd files you can use to despair on your own :)

Micro-Modules

This is a serial communications module (using the UART that exists inside the PIC 18Fxxx, It just changes Voltage levels so your 5v microchip, doesnt get fried by the serial's +-9V



This is a simple 7805 on a perfboard. Giving stable 5v to your (my) test circuits and breadboard projects.. I recently made a 3.3 V version for experimenting with the dsPIC33 family.. (more problems with these to follow :)

Well well look what we got here :)

I MUST finish it. (and of course, it's panel :(

MidiBox Sequencer V3.3

These are the core components, etched, soldered, placed, programmed, working, but lacking a nice panel to sit on. This is my weak spot. .. Panels...



A big thanks to T. Klose and ucapps.de for exisiting :)

MFOS SoundLab

Lying somewhere inside a box is an almost-finished Sound lab. (lacks pots which I am still waiting for). I bought simple square aluminum panels 21x27cm each for 2 euros apiece and decided that the panel will be as shown, printed on photographic paper and stuck on the aluminum since I have no other way to make it better.


You can find the SVG (made with inkscape) here

Side projects

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=
1x8 + 6 : 2x8 + 6 : 1x8 + 2 =
14:22:10

Nice eh?

(wouldn't sell though : )

A working core module