Industrial Counter Project Detail Keyboard and Display For an Industrial Counter Device in an environment full of Transformers , Inductive Loads and EMI emissions Design Sections SchematicsPCBFirmware Design Key Part Of the Design STM32F0SPI-FLASH7-Segments Wide Operating Vin ( +8V <-> +60V ) with polarity Protection Tools Used Schematics and PCB : Altium Designer ( 2 Layers )Firmware : Keil , C/C++ , ARM-COMPILER