Connection to a PC over the serial interface (9 lines!)
Attention! Construction only for experienced people! No warranty or guaranty for mistakes on this page!
Pocket Computer 15 pin IO | - | big PC 9 pin IO |
---|---|---|
2 | - | 2 |
3* | - | 3* |
7 | - | 5 |
11 | - | 1+8 |
plug for PC-1350 | plug for PC |
(PC out 3)--[diode->|-]--[1 kOhm]--(Pocket in 3)--[1 kOhm]--Ground
* here to solder!
Pocket line 5 must be connected to 10 or 13!
Advanced serial cable
10µF 25V | |
0,1µF | |
CMOS 4069 (14 Pin) | |
HIN232A oder MAX232 (16 Pin) | |
Voltage regulator 5V L7805CV or similar | |
* | The diode (N4841) prevents the pocket computer from discharging when no battery is connected |
PC 1 15 pin IO | - | PC 2 15 pin IO |
---|---|---|
2+3 | - | 2+3 |
7 | - | 7 |
PC 1 15 pin IO | - | PC 2 15 pin IO |
---|---|---|
2 | - | 3 |
3 | - | 2 |
4 | - | 8 |
5 | - | 11 |
7 | - | 7 |
8 | - | 4 |
11 | - | 5 |
Pocket Computer 15 pin IO | - | modem |
---|---|---|
2 | - | 3 |
3* | - | 2* |
4 | - | 7 |
5* | - | 6+8* |
7 | - | 5 |
8* | - | 1* |
14 | - | 4 |
AT&F&C1&D2 + CR
Dialing:
ATDT + phone number + CR
End a call:
~~~+++~~~ATH0 + CR