Injection molder digital control Columbia Gadget Works (2015) This is a control system for a hobby injection molder as described in "Secrets of Building a Plastic Injection Molding Machine" by Vincent R. Gingery. In the book, he uses a simple thermostat to control a heater element. We wanted to try something slightly more sophisticated so we built this. The control is housed in a small project box. It consists of an arduino Nano on a custom board and connected to: Two tact switches on D11 and D12 for up/down control of the temperature set point. A Sparkfun 7-segment serial lcd display (https://www.sparkfun.com/products/11440) The display shows a:nnn for the actual temperature and p:nnn for the setpoint. A 10k thermister for measuring temperature of the heater block. A Sparkfun beefcake relay control kit. (https://www.sparkfun.com/products/11042) ######################### Status: ######################### It works but the interface isn't very responsive. ######################### TODO: ######################### Improve the loop that detects button pushes. Allow push/hold for inputing the temperature. Improve the loop that controls temperature. PID?