As I promised, here are the pin outs for the 6 pin connector that go into the Brookstone Micro unit.
and the final result on the right:
I bought a mini 12V 1.5A switching power supply. As you can tell by the above picture it is not your typical wall wart in that it will only take up one outlet space. The above power supply with the PS/2 keyboard connection soldered on will greatly save you space of the two large bricks (Power Supply and Subwoofer) that normally have to be attached the Brookstone unit. All you need is:
- 12V AC/DC adapter ($10 - $15)
- PS/2 keyboard extension cable ($5 - $10)
- wire cutter / strippers
- multi meter (el cheapo ones $5)
- electrical tape or heat shrink
On the 12V AC Adapter:
1. don't plug it in!
2. cut the tip off
3. strip the insultation (1") off for the ground and positive wires
On the PS/2 extension cable
1. from the male end, cut about 6 - 8" (or however long or short you want)
2. strip the insulation (1") off 7 - 8 wires
3. set your multi meter to measure ohms / resistance
4. put one side of the multi meter's lead on the ring of the PS/2 male connector and then touch each wire until you get a short (no resistance) - label that wire as ground
5. repeat the above step but for the "6th pin" but label that wire as 12V
6. cut the other non used wires so they are no longer exposed
Attaching the two cables
1. if you want to get fancy, slide some heat shrink on the 12V cable so it is down by the adapter end
2. intertwine the 12V + wire to the labelled 12V wire o the PS2 cable
3. solder the wires together
4. electrical tape the connection
5. repeat steps 2 -5 for the ground wire
6. plug in the 12 V adapter.
7. set your multi meter to measure voltage (eg 20)
8. put the black tip from the multi meter on the ring of the PS2 connector
9. put the red tip on the "6th pin" you should get a reading of about 12V
10. ensure you have no voltage going into pins 1 - 5 (if you do you might have soldered some other wires together)
11. If all is good, slide the heat shrink over your taped connections and heat it up or use good ol electrical tape to seal your wiring up.