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DATASETTE MODS
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2009-10-10
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244 lines
─ATASETTE ═ODIFICATIONS ╨AGE 1
╘HIS ARTICLE IS REPRODUCED BY PERMISSION FROM THE ═ARCH, 1989
═╔─╫┼╙╘ ╬┼╫╙, THE MONTHLY JOURNAL OF THE ═IDWEST ├OMMODORE ╒SERS
╟ROUP. ╨ERMISSION IS GRANTED TO REPRODUCE THIS ARTICLE FOR NON-
PROFIT PURPOSES ONLY. ╘HE AUTHOR AND ═╫├╒╟ ASSUME NO LIABILITY
FOR ANY DAMAGE CAUSED BY FOLLOWING THE PROCEDURES OUTLINED IN
THIS ARTICLE. ╒SE A DOODLE VIEWER/PRINTER TO VIEW THE FILE
───╔┴╟╥┴═ INCLUDED.
╘HE ─┴╘┴╙┼╘╘┼'╙ ╙╨╠╔╘ ╨┼╥╙╧╬┴╠╔╘┘
┬Y: ╥ICK ─IXON
╨LEASE SEE ───╔┴╟╥┴═ FOR SKETCH.
"╘AKE THOSE OLD RECORDS OFF THE SHELF, SIT AND LISTEN TO THEM BY
YOURSELF." (┬OB ╙EGER)
╧R MORE APPROPRIATELY,"╘AKE THOSE OLD CASSETTES OFF THE SHELF
AND SIT AND LISTEN TO THEM ON YOUR ├64 OR ├128". ╫ITH THE
INFORMATION IN THIS ARTICLE YOU'LL BE ABLE TO DO JUST THAT,
LISTEN TO YOUR FAVORITE TAPES THROUGH YOUR COMPUTER AND MONITOR.
╙O, GET YOUR OLD ├OMMODORE ─ATASETTE FROM IN FRONT OF THE DOOR
AND FIND SOMETHING ELSE TO HOLD THE DOOR OPEN. ╧R, TAKE THE TAPE
DRIVE OUT OF HIDING AND DUST IT OFF.
┬EFORE WE GET INTO THE NUTS AND BOLTS OF THE PROCEDURE ╔ MUST
WARN YOU THAT OPENING THE CASE OF THE DATASETTE WILL VOID ANY
WARRANTIES, (╔F IT IS STILL UNDER WARRANTY WHICH IS HIGHLY
UNLIKELY). ╠IKEWISE, OPENING THE COMPUTER WILL VOID ITS
WARRANTY, AND OF COURSE, NEITHER THE AUTHOR OF THIS ARTICLE OR
═╫├╒╟ ARE RESPONSIBLE FOR ANY DAMAGE THESE CHANGES MAY CAUSE TO
YOUR EQUIPMENT.
╘HE IDEA FOR THIS HARDWARE MODIFICATION SPRANG FROM A
CONVERSATION WITH ╨ETE. ╚E WAS EXPLAINING HOW COLLEGE STUDENTS
WERE ATTACHING THEIR PERSONAL TAPEPLAYERS TO ├64S AND PLAYING
THE TAPES THROUGH THE COMPUTER. ╚E SAID HE HAD TRIED IT AND IT
WORKED! ┴ QUICK CHECK OF THE PINOUT DIAGRAMS IN THE APPENDIX OF
THE COMPUTER MANUAL REVEALED THAT PIN 5 OF THE ┴UDIO/╓IDEO JACK
WAS LABELED AS "┴UDIO ╔N". ╔NVESTIGATION OF THE SCHEMATICS
SHOWED THAT PIN 5 WAS CONNECTED TO THE ╙╔─ (SOUND INTERFACE
DEVICE) CHIP. ╘HIS MEANT THAT NOT ONLY COULD A TAPE PLAYER OR
OTHER AUDIO DEVICE BE CONNECTED AND PLAYED THROUGH THE COMPUTER,
BUT IT'S VOLUME COULD ALSO BE CONTROLLED WITH THE RIGHT POKE
COMMAND IN THE ├64 OR BY THE VOLUME COMMAND IN THE ├128. ╫ITH
THIS INFORMATION CAME MORE QUESTIONS. ╫HY COULDN'T THE ─ATASETTE
BE USED AS A TAPE PLAYER ? ╚OW WOULD YOU HOOK IT UP IF IT COULD
PLAY TAPES ? ╫E NEEDED TO FIND THE ANSWERS TO THESE QUESTIONS
AND SO THE EXPERIMENTATION BEGAN. ╫HAT FOLLOWS IS THE RESULT OF
THAT WORK.
─ATASETTE ═ODIFICATIONS ╨AGE 2
╘HERE ARE THREE WAYS TO APPROACH THIS PROJECT. ╘HE FIRST HAS THE
AMPLIFIER ENCLOSED IN THE DATASETTE WITH THE SWITCH AND AUDIO
JACK PROTRUDING FROM THE CASE. ╘HE SECOND INVOLVES PLACING THE
PARTS ENTIRELY INSIDE OF THE DATASETTE. ╘HIS VERSION GIVES A
CLEAN SELF CONTAINED UNIT. ╘HE THIRD REQUIRES BRINGING THE
REQUIRED WIRES OUT OF THE DATASETTE AND INTO THE AMPLIFIER AND
THEN INTO THE COMPUTER.
┘OU WILL NEED THE PARTS LISTED AT THE END OF THIS ARTICLE AS
WELL AS A SOLDERING IRON, SOME SOLDER, A PAIR OF WIRE CUTTERS
AND A DRILL WITH DRILL BITS.
┴LTHOUGH THE UNIT ╔ BUILD DID NOT CONTAIN A SWITCH OR ╥├┴ JACK,
╔ HAVE INCLUDED A SWITCH IN THIS VERSION TO PROTECT THE ├╔┴ CHIP
AND AN AUDIO JACK FOR A CLEANER APPEARANCE. ┘OU CAN ELIMINATE
THESE IF YOU WANT. ╔'VE NOTED HOW IN THE PROCEDURE BELOW.
╨ROCEDURE
1. ╥EMOVE THE BACK FROM THE ╥ADIO-╙HACK AMPLIFIER.
2. ╥EMOVE THE NUTS HOLDING THE JACKS OF THE AMPLIFIER TO THE
CASE OF THE UNIT.
3. ├UT THE WIRES TO THE BATTERY TERMINALS, CUTTING THEM AS CLOSE
THE BATTERY CONTACTS AS POSSIBLE.
4. ╥EMOVE THE SCREW THAT HOLDS THE AMP IN THE CASE.
5. ├UT THE SPEAKER LEADS AS CLOSE AS POSSIBLE TO SPEAKER.
6. ╙ET THE CASE , CASE HARDWARE AND BATTERY CONTACTS ASIDE.
7. ╘URN THE THE AMPLIFIER BOARD COMPONENT SIDE DOWN.
8. ╙OLDER A SHORT 3" WIRE TO THE REAR PIN OF THE INPUT JACK.
(SEE DIAGRAM ┴. ─OODLE ╞ILE ───IAGRAM) ╙KIP TO STEP 12 IF YOU
ARE NOT GOING TO USE A SWITCH
9. ╙OLDER THE OTHER END OF THIS WIRE TO ONE OF THE CENTER PINS
OF THE SWITCH,AS SHOWN IN ┴.
10. ╙OLDER ANOTHER 3" WIRE TO SWITCH AS SHOWN.
11. ╙OLDER THE TWO REMAINING WIRES TO THE SWITCH JUST AS THE
─OODLE FILE SHOWS.
12. ╙OLDER THE POSITIVE SPEAKER WIRE (THE RED ONE) TO THE CENTER
CONNECTOR OF THE ╥├┴ JACK. ╔F YOU DO NOT WANT TO PUT A HOLE IN
THE CASE, CONNECT A LONG WIRE TO THE SPEAKER WIRE AND SOLDER THE
JACK TO THIS WIRE WHICH YOU WILL BRING OUT THROUGH THE EXISTING
CABLE SLOT IN THE BACK OF THE UNIT.
─ATASETTE ═ODIFICATIONS ╨AGE 3
13. ├UT THE BLACK SPEAKER WIRE AS CLOSE TO THE BOARD AS
POSSIBLE.
14. ╫E ARE DONE WITH THE CIRCUIT BOARD FOR NOW, SO PLACE IT OUT
OF THE WAY.
15. ╘AKE THE DATASETTE AND PLACE IT UPSIDE DOWN ON A SOFT CLOTH.
16. ╥EMOVE THE SCREWS WHICH HOLD THE TWO HALVES OF THE CASE
TOGETHER.
17. ╘AKE OFF THE BOTTOM AND SET IT ASIDE.
18. ╥EMOVE THE CARDBOARD CIRCUIT BOARD PROTECTOR.
19. (╔F YOU ARE NOT USING A SWITCH OR JACK SKIP THIS STEP AND
STEP 20.) ╨ICK A LOCATION AND DRILL TWO HOLES. ╧NE FOR THE
SWITCH AND ONE FOR THE JACK. ╦EEP IN MIND THE LENGTH OF THE
WIRES YOU'VE SOLDERED TO THE SWITCH.
20. ═OUNT THE SWITCH AND JACK TO THE CASE WITH THE HARDWARE
PROVIDED.
21. ╠OCATE THE DATASETTE MOTORS POWER LEADS AT THE REAR OF THE
DATASETTE'S CIRCUIT. ╙OLDER THE AMPLIFIERS POWER LEADS TO THE
DATASETTE BOARD AT THE LOCATION OF THE MOTOR LEADS. ┴S SHOWN IN
─IAGRAM ┬. (╥ED TO RED AND ┬LACK TO BLACK)
22. ╙OLDER THE WIRE FROM THE INPUT CONNECTION OF THE AMPLIFIER
BOARD TO THE DATASETTE BOARD AS SHOWN IN ┬. ╘HIS SHOULD BE THE
PLAYBACK HEAD OF THE DATASETTE.
23. (╔F YOU ARE NOT PUTTING IN A SWITCH SKIP TO STEP 25.)
─ISASSEMBLE THE DATASETTE'S PLUG TO DETERMINE THE COLOR OF THE
├ASSETTE READ WIRE. ╔T IS THE ONE CONNECTED TO ─4 ON THE
├ASSETTE PORT AT THE REAR OF THE COMPUTER. ╙EE YOU ├64 MANUAL
┴PPENDIX B FOR THE DIAGRAM OF THE CONNECTOR.
24. ╧NCE YOU HAVE DETERMINED THE CASSETTE READ WIRE, LOCATE THAT
WIRE AT THE CIRCUIT BOARD INSIDE THE DATASETTE AND CUT IT IN
TWO. ┬E SURE TO CUT IT SO THAT YOU CAN GET TO BOTH SIDES OF THE
CUT WIRE.
25. ╬OW CONNECT THE REMAINING TWO WIRES FROM THE SWITCH TO THE
WIRE YOU HAVE JUST CUT. ╙OLDER THEM IN PLACE.
26. ╨OSITION THE AMPLIFIER INSIDE THE CASE SO THAT IT WILL NOT
MOVE. (┴ PIECE OF CARDBOARD WORKS FINE.) ╥EASSEMBLE THE
DATASETTE CASE. ╔F YOU ARE NOT USING A JACK MOUNTED ON THE CASE
BRING THE WIRE OUT THE BACK OF THE DATASETTE.
27. ┴LL THAT REMAINS IS TO CONNECT A WIRE FROM THE ╥├┴ JACK ON
THE DATASETTE TO PIN FIVE OF THE ╓IDEO JACK OF THE ├64 OR ├128.
─ATASETTE ═ODIFICATIONS ╨AGE 4
28. ╘HERE ARE SEVERAL WAYS TO DO THIS. ┘OU CAN PURCHASE A VIDEO
CABLE WHICH HAS PIN FIVE CONNECTED. ╧R, YOU CAN MAKE YOUR OWN.
╧R, YOU CAN DO AS ╔ DID AND USE THE GROUND WIRE FROM THE
─ATASETTE (UNLESS YOU'RE ONE OF THOSE REAL CAUTIOUS PEOPLE, YOU
KNOW THE ONES ╔ MEAN, THOSE WHO RUN AROUND THE HOUSE UNPLUGGING
EVERYTHING AT THE MERE THREAT OF LIGHTNING.) ╔'LL EXPLAIN HOW TO
USE THE GROUNDING WIRE NEXT MONTH.
╔F YOU DO NOT WANT TO PLACE THE AMPLIFIER IN THE DATASETTE THEN
SOLDER TWO WIRES TO THE DATASETTE BOARD AS SHOWN IN DIAGRAM ├
AND BRING THOSE OUT THE BACK OF THE DATASETTE. ╘ERMINATE THESE
WIRES WITH THE CORRECT PLUG FOR THE INPUT OF THE AMPLIFIER.
╨LACE A BATTERY IN THE AMP AND A CABLE FROM THE AMP'S OUTPUT TO
PIN FIVE OF THE COMPUTERS AUDIO/VIDEO PLUG.
╔F YOU HAVE ANY QUESTIONS TALK WITH ME AT THE CLUB MEETING. ╔
WILL BRING MY UNIT NEXT MONTH'S MEETING SO YOU CAN SEE WHAT THE
FINAL PRODUCT LOOKS LIKE.
╔N NEXT MONTH'S NEWSLETTER ╔'LL PRESENT SOME OTHER USES FOR YOUR
MODIFIED DATASETTE BESIDES JUST PLAYING MUSIC. ╙O STAY TUNED AND
DON'T TOUCH THAT DIAL.
╨┴╥╘╙ ╠╔╙╘
1 ┴MPLIFIER/╙PEAKER (╥ADIO ╙HACK)
1 ╥├┴ STYLE AUDIO JACK (╥ADIO ╙HACK #274-346) (OPTIONAL- SEE
TEXT)
2 ╞EET OF WIRE
1 ─╨─╘ SWITCH (╥ADIO ╙HACK #275-626) (OPTIONAL- SEE TEXT)