Project is about a method to measure level of liquid using pressure sensors. Though not a new idea, the design has been done with following features in mind, Scalability, Cost, Feature Set
Non Contact Wireless Liquid Level Gauge - [Link]
The example cases discussed in this application report provide a basic understanding of what needs to be done at production, as well as on the application level, to achieve the aforementioned goals. The associated software provides library functions to interface and communicate with the bq27410 fuel gauge, applicable to any USB-equipped MSP430 device. The software also includes a demo application that integrates the USB stacks and the fuel gauge library functions to read the battery information from the fuel gauge and transmit it to the PC through USB Communications Device Class (CDC).
MSP430 based USB Li-Ion battery charger with fuel gauge - [Link]
In this article I describe the simple setup and explain the code to drive analog meters using PWM outputs from an Arduino and the LCD Smartie program. I also replace the meter face to show the proper scale. Replacing the meter scale is very easy to do with most meters and can really ad some style to your project.
Arduino Analog Gauge - [Link]