After printing the last model I ran out of the white filament and decided to give the black filament a try and was surprised to get a print that looks and feels a better print, I think it's an optical illusion though, black just seems to look better.
Anyway I decided to do another design of the enclosure one without the battery for those that just want to connect to their laptop via the USB cable and us the PC software from elsewhere in my blog.
This design is a bit smaller that the first as there is no battery, switch or charging cable, I did leave in the holder for the Bluetooth module so it can be used with the smartphone app but you will need to power it from one of those portable emergency batteries via a USB cable.
You can get the STL files from Thingiverse
I've also been making some changes to the Arduino sketch to improve the functionality, I've implemented the use of interrupts to trigger the measurements so that some other things can be done via the main loop like checking if the trigger beams are blocked.
Some other options may be possible like adding and SD card to store shot data internally and use you PC later to recover the shot data for analysis, If you use a long enough piece of aluminium you could add a thread to the end to fit you silencer to and just use you gun for the day and download the shot data later.
Following on from the first blog about the hot water heating control here's what I put together for the mounting. Whilst looking for a...
A few people have expressed interest in making a DIY chronograph so I said I'd put together a shopping list. There are quite a few opt...
When I made the smaller screw on sensor that connected to the PC and fed the timing into a PC application, it got me thinking about differen...
As anyone who's read this blog before will know, there's a common theme throughout, the DIY Chronograph I made for measuring the spe...