Young inventor makes loud statement with Bluetooth speaker

Coimbatore: A college student has developed a cost-effective solar Bluetooth speaker with playtime of five hours on a single charge.
Inventor M Bharat Kumar, an Electronics student of PSG College of Arts & Science, has registered the Rs 2,200 speaker under Udyam, a scheme of the ministry of micro, small and medium enterprises.
The 15 x 5cm speaker can be connected through mobile phone or laptop to stream audio. It is small and light enough to carry around. It has a 6.5V detachable solar panel connected to a 20,000 mAh battery that can also be charged using main supply.
Bharat has used a coil-induced speaker that gives better performance with less power consumption. While he designed the amplifier board on his own, he used power components instead of surface mounted devices in the amplifier system for lasting performance.
“The speaker is serviceable unlike local speakers in the market that have to be scrapped if there is a malfunction. There are big brands selling portable speakers, but their cost is high, so is servicing those speakers,” said Bharath. “The speaker can be put to rough use and it would not break easily even if handled by children. The components are easily available in the market in case any of the components wear out.”
C Nagaraj, 20, who bought the speaker, came to know about it through a mutual friend. “The performance is much better compared to the products available in the market for the same cost. The wooden case appears durable,” he said.
Bharat had earlier developed a cost-effective sanitiser machine and a Wi-Fi signal booster, which received good response from buyers.