Here is my dac. But I think your dac may be difficult than me...
http://hk.photos.yahoo.com/leo8597
🙂 🙂 🙂
http://hk.photos.yahoo.com/leo8597
🙂 🙂 🙂
MCLL said:
your cdrom controller seems quite interesting, any info? 🙂
what DAC chip are you using? 43122? how is the sound? 😉
cheers
mdlover
I'm using AD1852 for my dac and sound is ok...🙂
Refer to CD-Rom Controller...🙂
**Include Source Code**
http://jsno.arafuraconnect.com.au/proj_micro/onhold_r2.html
I'm using AD1852 for my dac and sound is ok...🙂
Refer to CD-Rom Controller...🙂
**Include Source Code**
http://jsno.arafuraconnect.com.au/proj_micro/onhold_r2.html
It should be use PCB Software to create that file such as Protel and I just use universal PCB to build...😎 😎 😎
i have tried to use protel 98 to open, but fail....
how can i open....
can you open it and print to PDF? please help
how can i open....
can you open it and print to PDF? please help
Unzipped file and then using 'onhold_at89c51.a51' in onhold folder. I also can't to open it...🙂 🙂 🙂 Otherwise, I give up to all *.sch files due to I haven't any PCB Software. In LCD Module, you shoud change a 2.7K to 2K VR for contrast adjustment.
hi, MCLL
have you try boot up the onhold R2 with out CDROM?
i have solder the board but it dosnt work, no display~
have you try boot up the onhold R2 with out CDROM?
i have solder the board but it dosnt work, no display~
takashi
At first, make sure CD-Rom MUST set to MASTER, NOT Slave... What brand name of your CD-Rom? Some CD-Rom can't to work such as acer, pioneer. Otherwise, LCD display still work and it can display cd-rom model but can't to smoothly play audio cd... However, I try to boot up controller without cd-rom connect. LCD should be display line 1 '-= Onhold R2 =-' line 2 'By Jason Nunn' then display line 1 'Initing', controller stop here... You should try to adjust 2K VR ...
🙂 🙂 🙂
At first, make sure CD-Rom MUST set to MASTER, NOT Slave... What brand name of your CD-Rom? Some CD-Rom can't to work such as acer, pioneer. Otherwise, LCD display still work and it can display cd-rom model but can't to smoothly play audio cd... However, I try to boot up controller without cd-rom connect. LCD should be display line 1 '-= Onhold R2 =-' line 2 'By Jason Nunn' then display line 1 'Initing', controller stop here... You should try to adjust 2K VR ...
🙂 🙂 🙂
takashi
Recently, I search some Website for LCD & 8051 and some diyer change contrast VR to 20K...
... I will try to use 20K VR to adjust LCD contrast...
http://hk.photos.yahoo.com/leo8597
I had modified some source code but just display message like first message change to 'Welcome to CD-Rom Player'...🙂 🙂 🙂 . If you want to recompiler source code, you should have A51 compiler.
Recently, I search some Website for LCD & 8051 and some diyer change contrast VR to 20K...
... I will try to use 20K VR to adjust LCD contrast... http://hk.photos.yahoo.com/leo8597
I had modified some source code but just display message like first message change to 'Welcome to CD-Rom Player'...🙂 🙂 🙂 . If you want to recompiler source code, you should have A51 compiler.
your works look nice too. 🙂
btw, which part of china are you located?
seems many good parts can be sourced from china. 😉
cheers
btw, which part of china are you located?
seems many good parts can be sourced from china. 😉
cheers
An externally hosted image should be here but it was not working when we last tested it.
Be careful ! Too many bad good !
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