The smallest control on Arduino with display FINAL
Hello friends, today we will put together the smallest control on ATTINY85, I know that none of you expected the continuation of this project, but large projects take a lot of time, and videos on the channel cannot be released once every three months. Therefore, today we will complete this project.
Despite its size, the control has quite a lot of functionality compared to its Chinese counterparts from AliExpress.
First, the control has a dialing function, if the wire being dialed is intact, the message MASSA appears on the screen. I couldn’t find an SMD buzzer for this board size, so instead I installed a capacitor at the PB0 (aka AREF) output for measurement stability (more on this we'll talk when we disassemble the sketch).
Second, the control can measure voltage in the range from 0 to 50 volts.
Third, the control has protection against overturning.
And with all its advantages, the printed circuit board of our measuring device is smaller than a matchbox.
Capacitors C1 and C2 are power supply filters. Resistors R1-R3 and R4-R2 are voltage dividers, capacitors C4 and C3 are filters. We will talk about capacitor C5 separately. The display is connected directly to ATTINY85.
I also made detailed instructions for you and prepared a printed circuit board in Sprint-Layout and PDF, all links in the description under the video on YouTube.
