LCD PCD8544

After bitbanging a quick library, and some head scratching, i seemed to have solved all my problems for now...

Quick pictures update on ADSR

 Exp.attack at 0.4 and sustain level at 7/8 ( 20 Ms div)

A quick update to show that first try, worked as expected. Spent a few good hours in the process of starting to optimize the different building blocks id gathered, and make them interact. Tried to keep it as readable as possible and document the little quirks, and possible variations, references, etc in the implementation methods.
We have officially an ADSR with variable exponential attack, variable "decay-sustain ratio" ( allows both bypassing the sustain stage, and also looping/extending the sustain stage ), and variable duration/period... For now !


Next comes LFO's from all the wavetables available, simple filters, and start implementing simple convolution reverb. Lets see how far can i  "push the envelope" ( No pun intended).

Square wave and exp.attack at 0.5 ( .2 s Div )

http://dubworks.blogspot.co.uk/p/blog-page.html

DIY DUBSIREN Kits (test PCB Boards)

My test PCB Boards( without ground plane, as they only test boards) just arrived...
So, after my tests, we will finally have available soon the DIY DUBSIREN Kits available !! 2 Diff models !! Nuff works happening !! 

Basic Dubsiren with basic delay (Rack version analog)

DubWorks Alpha II Siren Generator with Arduino

©DubWorks Alpha II Siren Generator  with Arduino 

So, here is one of the first versions of a simple siren, adjustable in rate and speed of ramp-up/down.
This is just a initial test and more complex will be, as soon as i finish my tests. Intend to include some drum synth type of sounds through sound synthesis  as well as the analog side of it, all with values relayed by the LCD.
Some other effects will also be available through microcontroller side of things( phaser, delay and reverb, etc). Will be a slow pain staking project but its coming in good terms as will be much more modern compared tro what the analog side of things can give us.
Also started to look into some DSP uC's like dsPic series from Microchip © 

Some ideas you can use as starting point

https://bitbucket.org/idahogray/arduino-toy-siren

http://tronixstuff.wordpress.com/2010/04/30/getting-started-with-arduino-chapter-four/

http://www.instructables.com/id/Make-a-Mini-LED-Siren-powered-by-Arduino/

Arduino Alpha II DubWorks

Arduino Alpha II DubWorks

Part of my research into the Arduino and sound generation and effects
Some ideas taken out of A.P.C.

More to come soon (details and code) ...

After realizing that Arduino has spread all around, despite the fact that i am a PIC man myself, but still i decided to give it a go, and start working on implement it with some of the projects i normally build. 
So intention is to develop a way of introducing an LCD, and interface control with the Arduino, and if not enough with the Atmel itself...
Intention is to have a nice graphic display of volume, specific relevant controls, etc, all through it...
So we wuld end up with an analog siren with top notch digital complements that would make them a few steps further in quality and number of sounds and features that a siren ( with or without delay) can offer...
All to make soundsystems, and DJ's armed with up-to-date sound gear.
Gonna take a while to develop the code, experiment etc, but im sure ill love it all the way !!
BOOOM !!!

PS-also seriously thinking of making DIY kits available soon, at least for some of the more basic builds, for those who want to build their own sirens, but dont have much knowledge to do it on their own...

So with nice tutorials, professional built PCB's, and the kit with necessary components, anyone with a steady hand and a bit of patient will be able to do it !!

If anyone has any ideas or opinions they would like to share in this field/question please let me know !!!

4 Pots, a momentary push button for triggering style, a toggle switch between permanent on siren and the push button.
two other switches with different capacitance, giving different oscillations.
Sounds like quick rising sirens are abound in this add on siren, that complements the other already shown

Testing it with the delay around the HT8972 IC ( cheap enough to have in a siren, at least if you want a budget thing).

New dub siren and basic "SIREN" delay ( around HT8972 Digital delay)

Some videos of the dubsiren i been working on. This was the first batch model, and still available.

My intention after researching all the models out there ( NJD, SE10, etc) was to build one that was the most versatile. So i ended with this model where instead of presets style( through a rotary switch), went with the free form style of dubsiren as it makes all the sounds the others do and many more.
PS- contact me if you want to know more details or even order one. !