mardi 10 juillet 2012

noizeInaBox temporary "shop" is available

I will finally create a small online shop for few devices i've created.
So currently there is no official online shop but i created a page with the things i sell.
You can find the shop page in the "tab" between Acceuil and Bookmark ..

lundi 9 juillet 2012

noizeInaBox DMG deep bass PCB mount

Currently working on my Deep Bass DMG PCB mount.
It will be a full headphone PCB replacement with 2 new 3.5 mm audio jack. so you won't need to desolder the original DMG headphone jack.
For sound output it will use high quality OxiCaps.

It is impossible to find a 3.5mm jack with the same size and feature as the original gameboy one. (independent normally connected switch), i found a suitable one but with a normally open switch. so i needed to add a 5V cable to it to be able to do the Headphone/speaker switch.

As the prosound jack is the same i've a normally open switch left, which i don't know how to use it for.
i was thinking of some start/select illumination when you plug the prosound jack in.
globally it is a switch that close when you plug the prosound jack in. so it can be used for anything.
if you have a good idea, please let me know.

vendredi 6 juillet 2012

noizeInaBox Selectable GB Clock working fine.

I soldered and tested the noizeInaBox Selectable GB Clock and it's working perfectly.

By connecting  VCC or GND to the A and B pins, you can select the desired frequency .

Some pictures and Scope screenshots

 compare the size with a GB battery.
if you look carfeully you can see a short between 2 pins of the IC, this is normal, i forgot a trace on the PCB during PCB creation .. huuuu ..
There is also 3 pad on the board, it is to set a default "value" the the pin B. For example make a short between pad B and GND then add a SPDT swith on GND, VCC and Pin A, will make a 4Mhz/2Mhz selectable oscillator for your GB (if you don't want lower selectable freq).

Some scope trace:
You can see that the frquency is not correct, because there is some drift in the freq. due to the way a tested it, the circuit was plugged on a breadboard then from breadboard to the GB.
also, the GB was powered by a very crappy switching power supply.

The original  GB crystal.

If someone is interested i've a few to sell, with component already soldered. just drop me a email.

jeudi 5 juillet 2012

my selectable GB clock PCB just arrived

I've build a precision selectable Gameboy clock module which got 4 selectable frequency.
1: 4.194304MHz
2: 2.097152MHz
3: 1.048576MHz
4: 524.288kHz

The board is very small 13 mm , and by adding 2 switchs, you can select theses frequencies.
It's time for some SMD soldering.
Some pics :

sorry for the crappy pictures.