Saturday, 30 August 2014

Lake Titicaca

Titicaca or Titiqaqa is a lake in the Andes on the border of Peru and Bolivia


 We stayed on an island on the Peruvian side. Very kind & hospitable people.  Traditional dress. Last night on the island.
Cooking is a simple yet wholesome affair.
Lovely food.
These are islands on the Bolivian side. They are made of reeds & mud. They float on the lake surface.


 A demo of the island's makeup.




 People live, grow food, etc etc on the islands. It's quite amazing.

 It's been a dog of a day.

 Poor guinea pig


 Too cute to eat.
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Buchla Tempest Glitch

A bottle of red wine + Buchla + Tempest drum  = Buchla Tempest Glitch.


 Cobramatic & Jondent mix.






A tempest on it's head

Tuesday, 26 August 2014

TTSH - ARP 2600 clone - build notes - Final bits (DIY)

Part no.20 of my TTSH (Two thousand six hundred) build which is a clone of the ARP 2600 synthesizer.
Finishing off some last bits.

You can see my full build thread HERE
There are two awesome TTSH threads in Muffs.
2600 clone - Two Thousand Six Hundred (TTSH)
and
Two Thousand Six Hundred (TTSH) Project General Build Thread
The DSL-Man site has a very good TTSH thread
And of course the official build thread is here
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Adding odd resistors & trimmers for the LEDs.

The power transistors --- orientation ?

Power Transistors (BD236 and BD237). Does the writing face up or down?


Power transistor BD 237


Power transistor BD 236

 There are 5 Switchcraft DPDT slide switches to instal.
This is a bit tricky as they need to be installed quite high.


I inserted them into their holes first then screwed the faceplate on.
When you turn the synth onto its face the switches should fall
into their correct places. Then solder.

Instal the jacks next. There are a lot of them!

It's starting to look good :-)


Linear 100K sliders first.

Testing that the faceplate still fits with the first set of sliders.
Looks Good. ! Onto the audio sliders.

 The standoffs should be 11mm. I'm using 10mm ones with some 1/8' washers.



Just the last 1M slider to install.

 Carrying out some initial tests.
All the modules seen to work fine (apart from the leds not lighting in two cases: The VCA and Noise).
The VCA & Noise do however work. Noise is a bit loud..... might try some other transistors 

Still, I'm really happy. What a awesome project. Thanks Zthee. (THC).

Monday, 25 August 2014

TTSH - ARP 2600 clone - build notes - Amplifiers (DIY)


Part no.19 of my TTSH (Two thousand six hundred) build which is a clone of the ARP 2600 synthesizer.

The Amplifer

You can see my full build thread HERE
There are two awesome TTSH threads in Muffs.
2600 clone - Two Thousand Six Hundred (TTSH)
and
Two Thousand Six Hundred (TTSH) Project General Build Thread
The DSL-Man site has a very good TTSH thread
And of course the official build thread is here
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There are left & right sections to this.

Left amp (from the rear view).

Right amp






TTSH - ARP 2600 clone - build notes - Electronic Switch (DIY)

Part no.18 of my TTSH (Two thousand six hundred) build which is a clone of the ARP 2600 synthesizer.

The Electronic Switch

You can see my full build thread HERE
There are two awesome TTSH threads in Muffs.
2600 clone - Two Thousand Six Hundred (TTSH)
and
Two Thousand Six Hundred (TTSH) Project General Build Thread
The DSL-Man site has a very good TTSH thread
And of course the official build thread is here
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Ok, we are almost there.
The switch next.

 The unpopulated switch section.

2n4392

The electronic switch is pulsed by the VC clock.
The clock provides the voltage that switches it between the two sockets (A & B).
Looks like the 2N4392 JFETs do the job of switching.

Missing the 150k resistor.


Song of the Daleks - Korg MS20 Mini & Doepfer Dark Time & Energy

The Korg MS 20 uses a different scaling method to most synths.
It's Hertz/Volt not the more common 1v/oct.

The Dark time sequencer is v/oct.
Still they aren't too shabbly together.
Sorry about the audio quality.




It's a small tribute to Dr Who.
Watching John Pertwee & Tom Baker take on the Daleks as a child is etched on my memory forever.