Lee Bullet Feeder Sensor

thingiverse

I got a Lee Bullet loader for my Dillon 550B and wanted to have a warning when the bullet tube is getting low. The sensor had to be mounted higher than the base to clear the slide wire. The tube won't be empty when he alarm sounds but will have a few left in the tube as a result, but you now know that the tube will have to be rotated soon. This uses a 12V Heschen M30 Inductive Proximity Sensor Switch I got on Amazon: https://www.amazon.com/gp/product/B081NNN98M/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I found that lead and copper are less sensitive than iron so I found I needed the 15mm distance found only on a 30mm diameter sensor. For a 12VDC power supply, I used a ALITOVE DC 12V 5A Power Supply Adapter Converter Transformer, Amazon: https://www.amazon.com/gp/product/B01GEA8PQA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 but any 12VDC source will work. You also need an alert device, a 12V light or Buzzer will work. I used a DIGITEN AC DC 12V 22mm Red LED Flash Alarm 80dB Indicator Light Lamp with Buzzer, Amazon: https://www.amazon.com/gp/product/B017YL31OY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 A switch is optional but recommended, unless you want the buzzer sounding all the time you are setting up. I also used a phone jack for each sensor. I put the plug on the sensor and wired the jack into the box. The same power supply will work for this, the Cartridge sensor and the Powder sensor, if you decide to build any of those.