From a sanitising system to a smart dustbin, how these children are using innovation to combat COVID-19 ... Arduino mega, and developed an app ... When the IR sensor senses a hand, ...

The contest, held on January 1, saw a total of 154 submissions in five categories — social inclusion, zero dump, plastic waste management, transparency, and liquid waste management.

The dustbin uses GSM technology to enable transmission of messages to a phone. Pawan told TOI that he has used a microprocessor, a 20-volt battery, along with an infrared sensor to sustain the design.