In this project we will design and build a DC Voltage Calibrator, providing a voltage range from 0 to 10 volts in 1 milli volt steps. The user interface will be a TFT display with touchscreen.
Below are links to version 1 of the software for the Arduino Nano. Also a zip file which contains the schematic, PCB artwork (Version 2) and component layout:
Parts List link below:
Below is a link to my KiCad files for this project:
In part 2 of this project we will make a number of improvements and build the unit in to a project case and carry out some tests.
Below are links to download the latest software version plus some zip files with all the project information including schematic, PCB artwork, wiring layouts and parts list plus project case template and front panel artwork:
For the project case simply search on eBay for “7.8”x6.9″x2.7″ Plastic Electronics Instrument Plastic Case Box Shell w/ Handle”
Also available from www.banggood.com as:
7.8 x6.9 x2.7 plastic electronics instrument plastic case box shell
In part 3 we will use new double side PCB’s and improve the accuracy of voltage reference below 2 volts. We will remove the need for calibration of the 1.024V Ref. Also a new battery option will be added. You can download the latest version of Arduino software, schematics and KiCad files from the links below: http://www.scullcom.com/DC_Voltage_Calibrator_Ver6.ino
Parts list can be downloaded from the link below:
Below are links to download the latest Gerber Files for PCB production: