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  1. B

    Voltage offset shifting

    here is my circuit I understand what i should do, but i can't find proper OP Amp. yes, I want to make from 0 -> -2.5V and from 5V-2.5V
  2. B

    Voltage offset shifting

    Hallo everyone, I have question, for my project I need square wave oscillator (-2.5,2.5V), I generated pwm signal (0.5V) from Arduino Uno, but I can't shift it. I tried to make sumator with PWM signal and -2.5V, but it didn't worked out. Can somebody help. :) Thank you
  3. B

    LCD bilbords

    Does anybody have experience with outdoor lcd bilbords? Can you give me idea how to make it?
  4. B

    please help me, with Arduino uno serial communication

    please make my sketch. It is not homework, really. I'm studying electronic and I'm one of best student in my class, but in one point I realized that I don't know anything practical, only theoretical, so I asked my teacher what to learn by myself, and he gave me some tasks and one of them was...
  5. B

    please help me, with Arduino uno serial communication

    I have one problem, I'm new in programming and I don't have lot of experience. I have to make C# program which task is to send some array of numbers to Arduino board. On Arduino board I have to sum these numbers and to return result to C# program, but I don't understand how serial communication...
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