An H bridge is an electronic circuit that can be used for loads such as motors to be driven in both directions, forward and backwards. H bridges are available as integrated circuits but here, we will explain H-bridge build from discrete component. We will see which problems may occur during control and how to fix those problems. H-bridge is modeled as 4 switches that can be controlled to achieve various voltage forms to the load. In real design, switches are made by transistors.

ADJD-E622-QR999 is a high performance, small in size, cost effective light to voltage converting sensor. The sensor combines a photodiode array and three transimpedance amplifiers in a single monolithic CMOS IC solution. With a Red (R), Green (G) and Blue (B) color filters coated over the photodiode array, the sensor converts RGB light to analog voltage outputs, denoted by VROUT, VGOUT and VBOUT, respectively. Complete project with ATmega8 using this sensor can be read at THIS ARTICLE