GSM Communication Network control Vehicle with a Solar Power
International Journal of Conceptions on Electronics and Communication Engineering Vol. 3, Issue. 1, April'' 2015; ISSN: 2357 - 2809 19 | 8 0 tones a Fig. 2: Circuit diagram of the DTMF operation The solar powered standalone vehicle was controlled by a mobile phone that made calls to the mobile phone attached to the vehicle.