Wiring system Operation

Week8

Figure 6: The connection GSM and Microcontroller to Car Wiring

Figure 6 above are shown the example of connection from GSM to Microcontroller. The GSM that are used in this example are Siemens TC35 from Cytron Technology. Its operate from 7 to 12 Vdc. To connect to the Microcontroller, usually the output voltage from GSM is around 3V, but the input from Microcontroller must 5v. It must be step up by using Logic converter 4 channel (LC04) that converted from 3v to 5v output to connected to SK40C(PIC16F877A). The output from Microcontroller will be connected to a relay and connected to the ignition switch system. The relay is connected to the car wiring as shown in the Figure6 above.

For the connection GSM to Microcontroller, please refer to Cytron Technology Tutorial: 

http://tutorial.cytron.com.my/2012/09/20/tc35-gsm-with-sk40c/

Connection from ignition switch to relay, please refer to:

http://www.classictruckshop.com/clubs/earlyburbs/projects/bosch/foglites.htm