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ChipMusic.org / Forums / Posts by xray303
Topics by xray303
Posts found: 33-42 of 42
Alley Beach wrote:to answer your 4th question, you could do a prosound with a 5 pin headphone jack, and rig it up that way. just jump the connections from the origional headphone jack to the pin. itll look something like this http://www.ebay.com/itm/Lot-of-10-Qty-3 … 519dd54ffe
it
another thing you can do is put a switch between one of the speaker leads, but thats a little of a hassel =P
I'm not sure using another jack (5 or more pins) you can use the speaker switch cable to mute it.
the speaker switch cable is "normally connected" to GND and when you plug a jack in the headphone jack, it disconnect it from GND.
I tried to find a equivalent jack with the same feature and it is quite difficult to find ( with similar size) because you need a 3.5mm jack stereo with a "normally connected" isolated switch.
if you did some successfull experiment with a replacement jack, i will be happy to know which one you used
wow ... what a track 
Same question as nitro2k01, it is strange that you battery led seems to be off, may battery too low (and backlight taking too much current )
you backlight connection seems to be unusual too, (gnd to the batt led) and VCC to an unknow location (near your green sticker).
Maybe during soldering the backlight GND you short the batt led pins ?
Another question, did you change something before you got this prob ? or it suddenly happens ?
Hi,
It works fine also with hot air from rework station, but effectively not a lot of people got one .. but using a hot air rework station it a very safe method (if you don't set your air temperature more than 150 deg Celsius) and you won't get any solder iron "mark" on the ribbon cable.
you can take a look here : http://noizeinabox.blogspot.co.uk/2012/ … ework.html
Funny, was working on the same PCB, but with all SMD component.. (not the primary pot , of course)
Also just finished the my selctable GB clock, using 4 fixed frequency (GBclock or GBclock/2, GBclock/4, mGBclock/8)
http://noizeinabox.blogspot.co.uk/
it is quite expensive ...
On my side i'm currently converting the arduinoboy code to run on a teensy (http://www.pjrc.com/teensy/index.html) (current status : i got the LSDJ Slave mode working, started tonight)
the teensy is very small too and it use USB for the midi connection. (USBMidi)
Edit : Teensy Project is not dead ... check this thread http://chipmusic.org/forums/topic/9337/ … teensy-20/
interesting thread,
Regarding to the GB schematics, they are coupling caps, to remove the DC offset, so if you remove them, you will get a DC offset in the headphone op amp and it will sound like crap. it could be better to add bigger value ..
What could be interesting is to connect prosound cables directly before the 1uf caps .(or on the CPU himself) and add new capacitor between the other side of the cable and the 1/8 prosound jack. so theoretically you will get the sound quite untouched for the headphone and better bassy sound for the prosound output.
Will try this with different caps value (2.2 u to 10u) when i got some time .. (as they are decoupling caps, to get more bass you should put bigger caps)
I did give a try on this transplant ... (i like using my rework station )
I take a few pictures during the process, so i created a tutorial .. (not really needed) . but you can take a look here.
http://noizeinabox.blogspot.co.uk/2012/ … plant.html
But is not explained how to desolder and resolder directly .. there are a lot of gooood video tutorials on internet for that.. so use google.
and also Thanks to NeX, who seems to be the initiator of this mod if i'm right .. (don't want to offend anyone) and for the help he gave me ..
Hi,
I tried also to do the same transplant.. works fine, i like this mod.
If you have a rework station, it's quite easy.. if you use flux, a quick warning, don't take conductive flux .. or clean it when finished soldering.
I did take a few pictures during the process, so i created a tutorial .. (not really needed) . but you can take a look here.
http://noizeinabox.blogspot.co.uk/2012/ … plant.html
Special thanks to NeX.
If you like solder and write some code, you can also doing similar with a open source midi speak and spell. http://noizeinabox.blogspot.com/
Posts found: 33-42 of 42
ChipMusic.org / Forums / Posts by xray303