My 35mm pinhole camera

After I posted the other day about building a pinhole camera, I immediately ordered a body cap from eBay. Last night it arrived, and here’s how I made my pinhole camera. Making the pinhole “lens” Not only do pinholes have to be tiny in diameter, they should also be made through a thin material. I […]

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Calibrating a TFT monitor

I hadn’t realised how important it is to calibrate a monitor correctly. My former method of “calibration” was simply to set the monitor’s contrast to maximum, and set the monitor’s brightness to a value that looked comfortable to me. I didn’t bother changing any settings in software. But I got caught out. Last night I […]

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Building a bottle battery

If you read my blog, you’ll have seen my recent review of my RSP Asteri 2 bike lights. I talked about making a bottle battery, and now I have. Unfortunately I forgot to take photos after the first couple of steps but never mind. What you’ll need I used the following parts, but you can […]

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