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 ..

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.

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.

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.