PIC-Based PLC for Machine Monitoring...

After months of working of hobby that spend money, I needed a way to get involved in hobby that generate money... After short discussion with 9W2DTR, I quickly design and built the following circuit in hope it will generate some money for my hobby spending... It's basically a simple analog voltage monitoring device... It compare 2 different analog inputs against 2 different setpoints and triggers the output accordingly... The LCD, button and a simple potentiometer is there to allow for setpoint setting and input monitoring. It's already functional, just waiting for delivery of the suitable chip for the controller from RS Electronics... While the PIC16F716 has a lot of features, it is lacking EEPROM data storage... needed for setpoint storage... Overall board size is 4.0" x 4.5"...