Primer Counter

Ever wonder how many primers you've used or have left on your progressive press?  It's often difficult to know when you can't see inside the primer tube.

The stand uses a LM393 sensor and a counter (I used an Arduino with a LCD display) to count the total number of primers you have left (or used) in a particular session.

Included in this release is the stand and several flags with 1mm and 2mm spacers for adjustment.  Also included is the Fusion 360 file for the #3 flag.  The numbers correspond to the Dillon pin numbering system. 

This was created for a Dillon A450 Progressive Press, but could be adapted for other equipment such as the Dillon RL550B or C.  

Created with Fusion A360 as part of a larger project.  Printed in PLA at 0.2 layer height with 0.4 nozzle.  Flags have been painted flat black to reduce the number errors (miscounts) due to the LM393 not being a polarized sensor.

NOTE:  The Stand is common with the Round Counter (found here: https://www.printables.com/model/346783-round-counter)