The project on which I was working on in my summer vacation as a research internship was optical cense. I remember that I had written a post about the same at the starting of summer when this was done as a course project. I and Vedang continued this project in summer and also working on it now. We have been assigned as Research Assistants for this project.
Work progress
Previously, we tested the IrDA chip which worked at 115.2 kbps. We tested the nodes for different parameters like angular displacement, distance between nodes, vertical displacement and other parameters. Over the summer, we have improved the speed of transmission from 115.2 kbps to 312.5 kbps. The MCP2120 transmit data at 312.5 kbps. We made a circuit on a general purpose PCB to test it. We made a transmitter and receiver and tested for the same parameters while using the new chip. The image of our transmitter and receiver is below.
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| Transmitter node |
What took us long time is ordering and receiving of the ICs. We took a week to design the new circuit and then ordered the ICs. The IC took 15 days to arrive. Then we soldered on a PCB. One thing I learned properly through my RI is how to solder properly. I also tried my hands at SMD soldering. After soldering the circuits, we tested them. As everyone knows, an electronic circuit doesn’t work at the first time. Same happened with us. Then we debugged the circuit and finally we made it working. During the summer, we also took some detours and did fun things apart from this project.
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| Receiver node |
Overall significant work was done as the speed was doubled. Now, we are in process of making a PCB and writing a protocol for communication between multiple nodes. More updates as the work progresses.
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