Harinezumi hacking 2013

I use my Harinezumi a lot. It's like the Holga, but digital. Hipster you say? Hell yeah.

Harinezumi misses a proper timelapse feature, the one out of the box shoots low-fps videos, which is not good cause it cuts the resolution in half and introduces some nasty mpeg compression artifacts.

So here I go to work. Harinezumi is easy to hack. Enclosure comes off real easy and there are only a few pieces. Here is the back off.

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The core pieces (the white rectangle is the display):

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The idea is to put a "Teensy" board under the display. The Teensy drives a CNY74-2H optocoupler to close the shutter circuit at some interval. Here is the Teensy 3.0 board. The top wires drive the optocoupler (through a resistor so not to fry it), the left wires will go to the battery (through a switch).

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So here is the board in its place:

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The whole case and the pieces of the camera are going to be made of Sugru. All the switches need to be enclosed in a piece of plastic straw so they'll still be accessible:

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The battery holder is replaced by a new one and Sugru is applied in abundance. Also note the switch that turns on and off the timelapse (top left of the camera).

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Lastly, some plastic flaps are put in place, together with some small plastic pins, so that the switches can be actioned. Also there is still space to attach a fisheye like in the pictures here, which never hurts. Slick!

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So now one can just strap the camera on the windshield in a very classy and toooootally unobtrusive way and take some timelapse videos. You can barely see the camera here. I don't know if you can see it.

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