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Bi-directional I-bus to Archos jukebox remote interface.
Version 1.3 Richard Moulds 18/04/2004. Car Supply Vbat = +12v C3 100uF C4 100nF R6 9K1R1 100K R3 15K R4 1K R9 10R TR3

I-bus

Jukebox Remote

TR1

TR2 R7 1K R2 9K1

TR5

TR4

R5 33K

R8 5K6

C2 2n2

C1 100pF 0vAll transistors are general purpose NPN rated to 30v and 150mA e.g. BC183. I-bus collision detection may be accomplished by setting the port to aninput, when transmitting ones (high level). The input will read low if another device is using the bus. 0v Remote

Headphone Output

R 1 C 4Remote R 7

R 3 1 0v 12v I-bus C3 + R 4 2 3

R 2 R 6

R 5

C 1

0v T R 1 T R 5 T R 4 T R 2 T R R 8 3 R 9

C 2

C B E

BC183 Viewedfrom above.

Intelligent Power Supply for the Archos jukebox (version1.3).
This circuit is for a partialy tested prototype only. The PIC code isstill in progress. Car Supply Vbat = +12v IC20 78L05 C21 100nF R27 100K TR22 NDT542AP C24 100nF R26 33K
9 RA2 Osci 1 18 RA0 17 GND 5 RB4 10 RB0 6D24 IC22

1N4001 Archos Supply Vout = +9v

LM317T

1 2 3 4 5

C20 330nF
C22 15pF

R31 100K
X20 4MHz

R28 220R

I-bus

15

4Osco Vpp

13 12 PGD PGC

14 Vdd RB3

TR21 BC183

R29 1K5

R30 3K3

16

R20 33K
C25 1nF

C23 15pF

7 8 RB1 RB2 RB5 11

IC21PIC16F628

RA1

LK22 LK21 LK20

D23 Amber

R21 10K

R22 1K

R23 1K

R24 1K

R25 1K

0v

TR20 BC183 D20 Green D21 Red D22 Red