Thursday, 30 August 2018

Timbre & Timbre - Dual Timbre - NLC build notes

These are my build notes for the Nonlinearcircuits Dual Timbre module.
Its in Eurorack format. The original timbre module was based on the Buchla easel timbre waveshaper circuit.
  The tri2sin circuit has been dropped, there is an input attenuator for each section.

This is simply a dual version of the Timbre!, It is all smd (the single version is thru-hole).
Andrew's blog notes are here:

The NLC build notes and bom are here:

GET those ICs on first.

The BOM calls for a J112. Im using a J309
 863-MMBFJ309LT1G as the waiting time on the 112 is nearly a year

 Pots & Jacks

To be continued.................

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Tuesday, 28 August 2018

Splosh - Build notes - NLC module

These are my build notes for the Nonlinearcircuit "Let's Splosh" Eurorack module.
It's quite a straight forward build. Just 4 SMD ICs. The rest are 0805 resistors/caps

This module takes 4 CV or audio inputs and mixes them up into 16 outputs.

The virgin PCB & panel.

Andrews blog:

Build notes and bom are here:

The four Op-amps --- 072s
There are sixty 100k resistors

Reverse power protection diodes- 1N400x or S1JL.
The dot on PCB indicates CATHODE (stripe on component)

The module works by using 8 different rectifiers.
A rectifier diode lets electrical current flow in only one direction
Rectifiers are generally used to convert AC to DC.
The above circuit is a bridge rectifier.

Andrews circuit uses just 2 diodes and a op amp

This module utilizes 16 diodes in total. ...LL4148 diodes

The 4 inputs are named:
C = custard
T = treacle
N = natto
B = batter

We all pretty much know what custard, treacle and batter is, but what is Natto?

"Nattō (なっとう or 納豆) is a traditional Japanese food made from soybeans fermented with Bacillus subtilis var. natto. Some eat it as a breakfast food."

Jacks next
Install the LEDS and you're done.
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You can find more NLC builds here.

Sydney Fringe Festival

Roboto - Synthrotek

Some pics of a recent DIY build - the Roboto eurorack module by Synthrotek.
Its pretty cool .. reverb, vocoder, pitch shaper, vibrato , etc ... very flexible.

The official webpage is here:

Assembly instructions are here:

I bought a barebones kit which included the PCBs, faceplate, a vactrol & one microcontroller ic....labeled R1

The heart of the module is the HT8950. It is a CMOS LSI voice modulator IC which provides seven steps to shift the frequency of an input voice, producing a dramatic change in the output. The HT8950 provides two special effects: vibrato and robot. The vibrato effect is generated by alternating the frequency of an input signal up and down at a rate of 8Hz. The robot function, on the other hand, converts an input voice into a robot voice

R1 is a PIC16F1823 microcontroller. It's already programmed.

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Monday, 27 August 2018

Temple of Kom Ombo - Egypt

This is quite a late temple (as far as Egyptian history goes). It was constructed during the Ptolemaic dynasty, 180–47 BC with some later Roman period additions. It's about 30 miles (48 km) north of Aswan, on the bank of the Nile. Virtually every Nile cruise that sails near the area includes a visit to this temple.

Although today the temple that you see is from the Grecian - Roman period, the area had been inhabited since the pre-dynastic period of Egyptian history. It was constructed on the ruins of a much older temple called "Ber Sobek", or the house of the god Sobek. Ber Sobek was built by King Tuthmosis III and Queen Hatshepsut in the 18th dynasty. Queen Hatshepsut is famous for that amazing mortuary  temple on the West Bank of Luxor.

The temple is unusual in that it is dedicated to two gods.
The southern half of the temple was dedicated to the crocodile god Sobek, god of fertility and creator of the world with his wife Hathor, and their son Khonsu.
Meanwhile, the northern part of the temple was dedicated to the falcon god Haroeris ("Horus the Elder"), his wife Tasenetnofret, and their son Panebtawy.

Above is the crocodile god Solbek.

Kom Ombo means "the hill of the gold".
"Kom" (in Arabic) means the small hill.
"Ombo" (in Hieroglyphic) means "the gold".

above we have a Ptolemaic king making an offering to the the falcon god Haroeris ("Horus the Elder")
and the crocodile god Solbek (behind).

The temple’s double dedication is reflected in its symmetry. It has twin entrances, two connected halls twin chambers, and twin sanctuaries, etc, etc.

These wonderful wall carvings depict the Ptolemaic kings presenting the offerings to the gods.

This relief depicts a running lion biting a slaves hand.

The Nilometre... used to record the annual level of the Nile river.
This particular Nilometer was constructed during the Roman period and is connected to a smaller water well by the bank of the Nile

Snake charmer. Our guide said he was one of the many Nubians who were displaced when the Nile flooded their hometowns after the construction of the Nasser Lake.

Preserved papyrus shaped column

winged solar disk and two cobras.

 Coptic cross ???
There is much graffiti. Coptic ??? This temple was once a Coptic church.

Mummified crocodile.
Captive crocodiles were kept within the temple and many mummified crocodiles can be seen in today's temple museum.

The stone capital of these columns have the shape of the lotus flower. This is one of the most important and sacred plants in ancient Egypt.

Above are medical and surgical tools..... must have been gruesome back in those days... scalpels, saws, dental forceps... some things really haven't changed much in 2000 years.
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