I don't have experience like this.
But IMO CDROM require to use both 12V and 5 V for supply, so If power less than 15% about 10 V CDROM can not work well up to Model some can but some cannot .
But IMO CDROM require to use both 12V and 5 V for supply, so If power less than 15% about 10 V CDROM can not work well up to Model some can but some cannot .
I'm not sure it the CD rom would continue functioning,it might depend on the exact drive..
But,You wouldn't want to take a 12V battery down to 9V anyways,it can seriously shorten it's lifespan. 10.5V is about the absolute lowest you'd want to let it discharge to,before recharging it,to let it live a long happy life. 😉
But,You wouldn't want to take a 12V battery down to 9V anyways,it can seriously shorten it's lifespan. 10.5V is about the absolute lowest you'd want to let it discharge to,before recharging it,to let it live a long happy life. 😉
You could look at laptop cdroms,
they run on 5v only and lower current.
You need some fancy adaptors but...
they run on 5v only and lower current.
You need some fancy adaptors but...
I think I'll do just this -
Get 2 of the 12v 7Ah battery,
connect it in series to get 24v,
LM7812 gets connected off the 24v to power the 12v supply,
and 2 x LM7805 gets connected to one of the 12v battery
(and they will power the cd rom + controller kit).
But really, how serious is a cd-rom as a transport contender to a mainstream cd transport ?
Get 2 of the 12v 7Ah battery,
connect it in series to get 24v,
LM7812 gets connected off the 24v to power the 12v supply,
and 2 x LM7805 gets connected to one of the 12v battery
(and they will power the cd rom + controller kit).
But really, how serious is a cd-rom as a transport contender to a mainstream cd transport ?
Hi
To reduce 24V to 12v and 5 V You need to use big heatsink,
I have experience if you use too small heatsink 7805 will breakdown and short circuit then 24V run to Board then Chip is gone.
To reduce 24V to 12v and 5 V You need to use big heatsink,
I have experience if you use too small heatsink 7805 will breakdown and short circuit then 24V run to Board then Chip is gone.
is it the same for 877a and 877? And if yes, what are the fuses? oscilator, power up timer etc...?
877A & 877 use same program but when you write code on it need to select the correct pic no.
Mr. test your email reject my mail recommend you to use mail.yahoo.com
Pradit
Mr. test your email reject my mail recommend you to use mail.yahoo.com
Pradit
AFAICT
looks like
osc = HS
PoWer on ReseT=on
he has CPD = on
( can't see how that matters if you have the hex)
the rest of the fuses off ?
looks like
osc = HS
PoWer on ReseT=on
he has CPD = on
( can't see how that matters if you have the hex)
the rest of the fuses off ?
Times for source code
I still have kit for sale .
45 USD for kit
10 USD for shipping world wide.
new offer 45 USD for kit with source code full function with remote
So many friend ask me source code when they buy my kit, and I also give to them for personal use and study. Then I decided to give source code to all who buy my kit for personal use also.
Some people worry for import tax when buy my kit.
So if prefer my source code only 7 USD. for source code that can use with PIC16F877 only. I will send by email.
Any one who already buy my kit can ask me source code for free please mail me and use your email that last time contact me.
I still have kit for sale .
45 USD for kit
10 USD for shipping world wide.
new offer 45 USD for kit with source code full function with remote
So many friend ask me source code when they buy my kit, and I also give to them for personal use and study. Then I decided to give source code to all who buy my kit for personal use also.
Some people worry for import tax when buy my kit.
So if prefer my source code only 7 USD. for source code that can use with PIC16F877 only. I will send by email.
Any one who already buy my kit can ask me source code for free please mail me and use your email that last time contact me.
I really want a controller like this that plugs into a harddrive.
It would be great to be able to use a laptop type harddrive to store audio files and use a simple controller as such to play them back.
It would be great to be able to use a laptop type harddrive to store audio files and use a simple controller as such to play them back.
"I still have kit for sale .
45 USD for kit
10 USD for shipping world wide."
So your controller will control the functions of a generic CD-Rom.
1) tray open / close
2) play / stop
3) track select
It has remote, PCB mounted controls(local device buttons) and LCD display.
What is required to power the controller PCB and what is the recomended method of powering the CD-Rom if it is NOT being used in a PC? Just a simple regulated +12 volt supply or is +5 volts required also?
Will this also work on a generic DVD-Rom?
I am asking because I am intrested in one but I always like to know what I'm getting and what else I will need before I spend the money.
45 USD for kit
10 USD for shipping world wide."
So your controller will control the functions of a generic CD-Rom.
1) tray open / close
2) play / stop
3) track select
It has remote, PCB mounted controls(local device buttons) and LCD display.
What is required to power the controller PCB and what is the recomended method of powering the CD-Rom if it is NOT being used in a PC? Just a simple regulated +12 volt supply or is +5 volts required also?
Will this also work on a generic DVD-Rom?
I am asking because I am intrested in one but I always like to know what I'm getting and what else I will need before I spend the money.
Yes, please see detail on first page.
Yes, I just use 7805, 7812 for CDROM and tap 12 V to supply mu board that required 9-12 V 60 ma.
Right now I use with ASUS DVDROM the spin noise was very quiet.
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