ltspice , Uart, Usb, Rs232, Ethernet, Can, Spi, I2c, DUT programming tools, DAQ tools, Altium Designer, GPIO-based fixture control, DMM, Power Distribution, Power analyser, Mixed-signal circuit design, Switching, Logic analyser, Switching relay cards, Oscilloscope, Protection circuits, schematic capture, Programmable power supplies, Industrial-grade hardware design, Barcode serial scanning interfaces, Rs485, Measurement interfaces, Pcb Layout