Giter VIP home page Giter VIP logo

power-supply-voltage-selector's Introduction

power-supply-voltage-selector Build Status

Trying to learn more electronics by building a circuit that lets me have different voltage outputs for use with other prototypes and mostly breadboards

Prototype

Current progress

Schematics

Primary

Logic schematics

Daughter

LEDs and Buttons

Boards

Primary

Main board

Daughter

Board of LEDs and Buttons

Parts list

ICs

  • ATTINY85 - Drives the digi pot and shift register
  • LM7805CT - 5v voltage regulator for Vic
  • MIC2940 - Adjustable voltage regulator as target output regulator
  • MCP41010 - 10 kΩ digital potentiometer
  • SN74LS595N - 8-bit shift registers with latches

Discrete components

  • 12V Transformer
  • 4x 1N4007 Rectifiers
  • 2x 47 µF Electrolytic capacitors
  • 3x 0.1 µF Ceramic capacitors
  • 1x 330 Ω Resistor network (SIL-6)
  • 1x 10 kΩ 5% Resistors
  • 2x 1 kΩ 5% Resistors
  • 4x 3mm LEDs (green. To indicate selected voltage)
  • 1x 3mm LED (red. To indicate that power is flowing from the wall)
  • 1x USB-A Female
  • LED Volt meter thingy (slightly redundant with the LEDs...)
  • Toggle switch (turns on Vin)
  • Momentatry switch (selects voltage)
  • Jumpers and headers (Oh my!)

power-supply-voltage-selector's People

Contributors

hokiegeek avatar

Watchers

James Cloos avatar  avatar

power-supply-voltage-selector's Issues

Change layering

Top Layer: LED and button
Bottom Layer: Resistor network and jumpers

Use PB0 as output

Try it out with a blinky, but should be able to send output to the transistor... Would be nice if it was a latching transistor...

Holy crap! Section 10.2.1 of the tiny85 sheet says that it has internal pull-up resistors! I could configure the button so that it won't need its own resistor!

 // Pull-up resistor should turn on with the following config
DDRB |= (1 << DDB0);
PORTB |= (1 << PB0);

Remove R3 (and ground path)

Now that I have a bit more knowledge about this stuff, the voltage divider in the example for the MIC is already being handled internally by the digipot, so there's no reason for me to have R3 or the ground path.

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.