Author: Yubin Lin


New Project: Portable Light Meter using TSL2591
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Tuesday April 23, 2019 # 0 Comments # Category: code, inventions, miscellaneous # Tags: , ,

While Yichi is busy with his linear CCD project, I decided to start a small project (quite small when compared with Yichi’s CCD). This project will be a light meter for photography. I have a Mamiya 645 for medium format that does not have any metering to it. Right now I’m using a smart phone app that will get the reading from the camera. However, I’m just too lazy to grab my phone from my pocket – unlock the phone – open the app – take a snapshot and get the reading – finally dial that numbers into my camera. The meter consists of a TSL 2591 light sensor, a […]

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Update: ILX508 Linear CCD Imaging Testing
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Wednesday April 10, 2019 # 0 Comments # Category: inventions # Tags:

Another update about the linear CCD project. Last Friday we tested out the CCD for image generation. The clock and trigger signal are generated by Teensy and are fed into the CCD. CCD capture the light intensity and return the signal back to the amplifier. The amplifier output then is connected to the ADC pin on Teensy for sampling. The test method is crude — with 2.54mm pin headers on top of the CCD — to generate some shape… here’s the waveform seen on oscilloscope: From the oscilloscope graph, we can clearly see the shape posed by the pin header onto the CCD, here’s the image: I know… it’s hideous, […]

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