My brother
has build a new speed shooting trainer / timer, which can be used to
practice:
1) speed shooting, measuring (with a microphone) the time between 5 shots
fired as fast as possible,
2) 25 meter standard pistol,
3) 25 meter sport pistol,
4) Terrain pistol.
Below you can see some pictures of the design (click on the picture to
enlarge it):
Updated!
Speed shooting trainer /timer schematic.
The empty main pcb.
The mounted main
pcb, in an early version. The speed shooting trainer/ timer is
controlled by a 18F1320 PIC Microchip.
The design uses now approx. 12 mA with a TL062 op-amp (instead of
OPA2134) so you should expect approx. 40 hours working time with a 9V
battery. Other enhancements in this version is 99 sek 999 ms before
timeout in speed shooting and interrupt controlled time measuring in
both speed and time shooting, which results in increased accuracy in
both modes. Updated!
Firmware version 14 with these enhancements:
1) In sport shooting mode: "Wait" text changed to "Ready" and "Finished"
text changed to "Stop"
2) Program changed so that the speedtimer can measure up to 999 seconds
and 999 milliseconds
3) Program changed so that the speedtimer can measure the total time of
up to 99 shoots
4) Program changed so that the speedtimer shows the five first time
measurements and the last time measurement
