Thursday, 10 August 2017

Burma - U-Bein Bridge - travel pics

This bridge spans the Taungthaman Lake near Amarapura in Myanmar.

 The bridge was built from wood reclaimed from the former royal palace in Inwa.

 It features 1,086 pillars that stretch out of the water, some of which have been replaced with concrete.

 construction began in 1849.
 The teak posts were hammered into the lake bed 7 feet deep.

 The 1.2-kilometre (0.75 mi) bridge is believed to be the oldest and longest teakwood bridge in the world.

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For more travel postcards click here:

Thursday, 3 August 2017

Walk to the Eibsee (lake) - Bavaria Germany

 Eibsee is a lake in Bavaria, Germany, 9 km southwest of Garmisch-Partenkirchen and roughly 100 km southwest of Munich. It is 973.28 metres above sea-level and its surface area is 177.4 hectares. 
 
It is at the northerly base of the Zugspitze, Germany's highest mountain
 
 
These pics were taken in Garmish - P
The country side is so peaceful.
I started the walk from the town of 
Garmisch-Partenkirchen.
 













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Tuesday, 1 August 2017

8 Bit Cipher - NLC - Build notes.

These are my build notes for the NLC cipher Eurorack module.
It is based on the Buchla SOU - source of uncertainity --- the best place for random
CVs and gates.

The 8-bit can produce 4 CVs and 8 gates.
It requires 2 inputs:
1. Clock
2. a signal on at least 1 data input.

Any signal crossing 1V can be used as a clock or data signal.
Leave the clock signal steady and vary the frequency of the signal to the data input.
Also try different wave-shapes such as square, sawtooth or triangle


sOME NLC words of wisdom:

ICs first.
Now for the through hole stuff:
Headers to join the 2 PCBs.
Install the Jacks & LEDs


Links:
- NLC build notes
- NLC blog 
- NLC panel - CMOS (Serge format) 
- jondent blog - The cipher section of the serge/CMOS panel 

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Works well with Buchla.
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The upper 9 jacks are trigger outs.
000 to 111 are binary for 0 to 7.
Super serial = ??? Its another trigger out.
CV1 to CV4 are outputs.
The CV outputs are all related to each other but are all different; part of CV1 is fed to CV2, part of CV2 is fed to CV3 etc.
 
The lower row are all inputs.

"The strobe input makes it a bit like an 8 bit sample and hold.
If nothing is inserted into the strobe jack the module carries on as normal. When a signal is introduced to strobe, the data obtained from the data jack is only loaded onto the outputs when the signal is high. "
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You can find more NLC builds here.
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Monday, 31 July 2017

Serge Bi-directional Quad switch - build notes

I've been searching for the perfect synthesizer router for my Serge.
The Serge Bi-directional router is fine but I would love to have more ins/outs.
Recently I built a NLC 32:1and NLC Router for Eurorack.
All excellent and I might one day adapt one for the Serge.
One I haven't tried is the serge Quad switch which seems to be an adaptation of the earlier
Serge Triple Bi-directional R.

The module I'll build is the Cat Girl Synth CGS 88.
Ken's Build notes are here:
https://cgs.synth.net/modules/cgs88_bds.html

The Quad switch uses a CD 4013B.
Its a CMOS Dual D-type flip flop that works as a two bit binary counter.
Looks like the switch used in the vintage 1970's module was a Motorola MC14007UB.
It was mounted on a separate board off the original R4 PCB.
You can still find these.

D = Drain, S = Source.





to be continued..... waiting for parts.