12 339

computer sketches

11 288 - modular synth cabinet

modular synth cabinet

will have modules for - ATP, 40106 osc., PWM, 2399 delay, 8 step sequencer. 

10 273 - smena

A roll of ilford hp5 through a newly purchased Smena 8M showed it's deterioration and death over time. These are some of the only remaining workable images, very interested but pushed beyond eternity.

bel peforming and various leaks.

audio of speaker below.

9 238

Jarrah stain

before (with speaker grill)

8 214

pretty much finished 10'' optimised guitar speaker, a bit of sanding but sounds great

7 214 - sketches for sound and space

 scale modes

 1 - 5 : middle C to G sine.

sketches for space

6 214 - 3 sketches for speaker design

5 083, Princeton update (chassis)

Drilled, bent, spray painted.

Starting to actually look like a valve amp.

Still waiting on some parts from Tayda electronics, 1/2W resistors and whatnot, and an output transformer from ebay. Might buy some heat shrink and rubber grommets to shock mount the tube sockets and make them sit a bit better.




Little test video I did this afternoon with Bel's Nikon. iMovie. 18-55, 25-105.

4 081 Tube Depot review, Fender Princeton, Harrison Island

Bought a few things from tubedepot.com to build a Fender 5F2-a Princeton. Power transformer, some sockets, filter caps and coupling caps. Struggled to find a cheap-ish power transformer in Australia, so had to buy from America, postage was $43, which is ok, but had tracking so I could tell exactly where the package was whenever, and it only took 13 days in the end, which is surprising because I'm rural(ish).

Packaged well, no glass in here. Excessive use of bubble wrap is great.

Transformer is packaged nicely, unlabelled on the website but this is a classic-tone, cheaper than on the classic tone website at $77AUD ($60USD).

The Fender 5F2-a Princeton has a couple of mods and stuff, probably use a 6L6 for a bit of a kick and I think the OT can handle it at 5k impedance. Bass-Mid-Treble Fender tone stack instead of a one knob tone control, be a bit more dynamic, hopefully not too much power drop from that. On-Standby-Off rotary switch, while turned off engages a bleeder circuit for the filter caps so you can work open it without dying. variable negative feedback potentiometer instead of the general 22k for more dynamic ability etc...
I'll do another post sometime during making the amp, or after it's finished.

random painting by dad #3

little bit of a thing with Sudi.

3 314 package, light toy, sk-5

A package if new components came in the mail today from Tayda Electronics. It contained a a stock of resisters and capacitors and a large range of all sorts of things.

Enough capacitors and resistors to last a lifetime.

 Greencaps for Stanes' Sovtek Bigmuff fuzz.

 Here are two kinds of knobs from Tayda Electronics (Left the right): Packaged Boss Style Silver Top (Like it was when packaged, these were 39c each), The same knob again unpackaged, The right two knobs are Davies 1510 Clones, Cream and Black.

 1/4'' Jacks for the mixer project.

386 and LED driver chips in their respective spongeys.

Potentiometers for the mixer.

3DPT foot-switch for the Sovtek Muff. Quite nice quality.

Various switches for different things.
I got to making Bel a little light toy on request, The circuit is simple; A battery that charges two capacitors in parallel, then is discharged when a button is pressed. Depending on which button is pressed the RGB LED changed colour. Different combinations of pressing buttons give different effects. (the RGB LED is common Cathode)

Here's a little nokiadoc of the toy in operation.


Here's a little jam from a while back, with Bill and Stanes'. Bill is using his Casio Sk-5 to sample chords I play on guitar.



Working on some pedals.

Yesterday I had a play round on the Sk-5 and figured out the record/play features. We might mod it sometime.


random painting by dad 2#

2 313 pocket synth idea

The image above is my guitar and mandolin.

 Last night I was working on some designs for a polyphonic square-wave pocket synthesizer. It should be an interesting project. The design uses 555 timer chips to create a square waveform, the pitch is defined by a variable voltage (a 2k trimpot) and a button that closes the circuit. Every two notes is linked to the same IC, so it's not completely polyphonic. I did this because it was unreasonable that someone would play both a C and C# together at the same time. The same applies for every other two linked keys. Because there are 13 keys used, from C to the octave above, 7 555 chips are used.

The image below shows a simple schematic layout of it.

A new shipment of electronics components from Tayda Electronics is destined to come in the next few days. I strongly recommend this site for electronics projects. The package includes parts to build an EHX Sovtek Big Muff for a friend, and two passive mixer boxes with LED VU meter, for me and a friend.
I hope to fit the pocket synth circuit on one of these 120x80mm prototyping boards.

 Some images of electronics components and some projects. Also making Bel a light toy.


Little jam by myself.

random painting by dad 1#