Build me an analog calculator with addition and subtractions only

Hello sir! I can help you with this project I have done this before and can provide you samples detail will be in the chat section thanks! Will give you 100%

Hi, I am studyying at Electrical an IT Enginering, I am working with ARDUINO, also AVR microcontrollers. I already crated project which you want.

Hello! I am available and effective and you can count on me to do the job well as it takes. My last project is Fuzzy logic controller implementation on a FPGA using VHDL. So I can help u.