Powder Dispenser for Beam Scale

[Sdupontjr]

I finally got this thing working and many thanks to several folks who offered a helping hand.
Been working on this off and on in spare time but works fantastic. Tried a several designs but this one is the cats Azz.

So If you like beam scales, I built this control system for about $80.

-Tuned RCBS 502 from Scott Parker (Thanks again man)
-Built powder dispenser with 2500 grain hopper
-On/off power switch
-Red start switch
-Yellow bump / trickle
-Knob is speed controller
-NPN sensor for triggering the relays on the back of scale.

The attached video is a stiff charge of Varget that I use in my 130ttsx for 308. 49g of Varget dispensed at about 7 to 8 sec. Works everything. The system works off a relay module and a timer relay. Throw whatever charge you want and record the time. I throw 2 charges at whatever weight, record the time. It doesn't matter if it over charges, watch the beam for movement and record the time. Input the time in the controller, bang, done!!! I have it set to throw about .1 - .2 grains short and then trickle to setpoint. The slotted sensor is adjustable to move up and down so it could be fine tuned closer, but I like to trickle up.

 

[TTE]

Very cool .... but it's too big for my loading bench

 

[Sdupontjr]

The box is right at 7" long. My plan is to have it load out the back because my space is limited also. When I built my bench setup, I had to keep peace with the wife so I made it small and compact. Does everything I need, but more bench space would definitely help. Mine is 24" x 36". Too small, ha.

 

[TTE]

The box is right at 7" long. My plan is to have it load out the back because my space is limited also. When I built my bench setup, I had to keep peace with the wife so I made it small and compact. Does everything I need, but more bench space would definitely help. Mine is 24" x 36". Too small, ha.View attachment 1639172

Yeah, that is pretty small.
However, very neat and organized.
Mine ? ....... not so much .... but much bigger

 

[bozo699]

^^^^^^^^^
Wayne

 

[Sdupontjr]

I'm not sure of the forum rules for attaching links but I have a complete parts list as well as prices that I can post for anyone wanting to build it. Some have already PM'd. Also have the wiring schematic for it.

 

[Coyotefurharvester]

Nice, I don't think I can throw and than weigh that fast(plus not as much risk of a spill).

 

[Sdupontjr]

I had a different design with 2 motor, 1 fast and 1 slow but too many over charges. So i decided to incorporate time into it because there is not approach to weight setting in a beam scale. So time was used to get me very close to when the beam is moved. Tried Varget, H4831sc, H-1000, 8208xbr and TAC and all work as it should. Thats the only powders I had so that's all I could test.