Hi guys, I just want to post a few pics, although theres not really much to see. I built a chrony based on a this website below, which I found when browsing on this forum. Some guys complained it didn't work but I have found mine to work perfectly.
I made the sensors exactly 1 foot apart and rather powered the led emmiters in parallell using a standard penlight battery. No resistors involved.
the receiver leds were connected to the speaker cable and it works perfectly to time the pellet through point one and two.
I used a 17mm pipe OD and had a friend machine the first two inches or so to 15mm ID so it would fit over my CZ 200's barrel.
See pics. If you have any questions, I will try and assist.
BTW: it cost R16 to build.
Very cheap DIY Chronograph ~ Air Rifle SA Forums
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