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Hardware needed
1. The camera itself
2. 5V power supply
3. R 232 Cable with DB9 female connector
Hardware connection
TXD(out) of camera is connected to pin 2 (RXD) of the DE-9 FEMALE.
RXD(in) of camera is connected to pin (TXD) of the DE-9 FEMALE.
GND of camera is connected to pin 5 (GND) of the DE-9 FEMALE, and also connected to GND of Power.
+5V of camera is connected to power.