MobileRead Forums - View Single Post - PRS-500 Reader Internals 2.0 (pics!)

Nightwing · 11-14-2006, 05:11 AM

Here is an idea...

On the Cowon A2.. The audio jack has 3 rings and a tip... A std Stereo jack has 2 + tip. They use one of the rings as a remote control line... Uses resistors values from ground to that ring to control the unit. 1K = Fwd, 2k = REV, 20K etc...

If a extra ring jack could be added then...

1) A simple nothing hookup between the 4 ring and ground to bring out the next page button. Simple and the one needed the most so to speak.

2) Like the A2 have a small PIC chip read the resistance places across ring 4 and ground to control the various functions. Prv/Fwd Audio Up/Dwn etc...

Mouser have those weird jacks and plugs... But could the Reader be retrofitted? Or put a small jack on a side or bottom.

Or if room try this....

RS is blowing out a wireless 3&4G iPod remote... The board is very tiny... Take from 3v to about 3.6 volts.... Uses PIC cpu's.... It would give 5 switches so to speak. Have not looked at it to see if possible to extract directly the control before it turns the command stream into its data to feed into a iPod. Benn working on adding a serial to control line PIC converter chip to remotely control my A2.

If want can post a photo of this board...

11-14-2006, 05:11 AM	#17
Nightwing Addict Posts: 303 Karma: 541 Join Date: Oct 2006 Device: Cowon A2 Dell x3i, Sony Reader & Eee PC!	Here is an idea... On the Cowon A2.. The audio jack has 3 rings and a tip... A std Stereo jack has 2 + tip. They use one of the rings as a remote control line... Uses resistors values from ground to that ring to control the unit. 1K = Fwd, 2k = REV, 20K etc... If a extra ring jack could be added then... 1) A simple nothing hookup between the 4 ring and ground to bring out the next page button. Simple and the one needed the most so to speak. 2) Like the A2 have a small PIC chip read the resistance places across ring 4 and ground to control the various functions. Prv/Fwd Audio Up/Dwn etc... Mouser have those weird jacks and plugs... But could the Reader be retrofitted? Or put a small jack on a side or bottom. Or if room try this.... RS is blowing out a wireless 3&4G iPod remote... The board is very tiny... Take from 3v to about 3.6 volts.... Uses PIC cpu's.... It would give 5 switches so to speak. Have not looked at it to see if possible to extract directly the control before it turns the command stream into its data to feed into a iPod. Benn working on adding a serial to control line PIC converter chip to remotely control my A2. If want can post a photo of this board... Last edited by Nightwing; 11-14-2006 at 05:15 AM.