Advances in Measurement & Sensor Tech


Posted on Feb 4, 2014

In this issue, we feature articles on a variety of measurement-and sensor-related embedded design projects. I encourage you to try similar projects and share your results with our editors. Starting on page 14, Petre Tzvetanov Petrov describes a multilevel audible logical probe design. Petrov states that when working with digital systems “it is good to have a logical probe with at least four levels in order to more rapidly find the node in the circuit where things are going wrong.” His low-cost audible logical probe indicates four input levels, and there’s an audible tone for each input level. Matt Oppenheim explains how to use touch sensors to trigger audio tags on electronic devices (p. 20). His design is intended to help visually impaired users. But you can use a few capacitive-touch sensors with an Android device to create the application of your choice.


Advances in Measurement & Sensor Tech
Click here to download the full size of the above Circuit.

The design used to test the menU system on the mbed processor was intentionally as simple as possible. Four buttons drive the menu system and an alphanumeric LCD is used to display the menu. Alternatively, one can use the mbed’s USB-to-serial port to connect with a terminal emulator running on a PC to both display and control the menu system.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Encoder-decoder
    TYPICAL TRANSISTOR CIRCUIT
    200W MOSFET Power Amplifier Schematic Diagram
    simple booster tv schematic diagram
    bearden MEG
    U-110 1.5 Mhz Current Mode Ic Controlled 50-watt Power Supply
    divide 1 333 multiply circuit
    Neuromorphic Silicon Neuron Circuits
    H-Bridge Tutorial
    Nixie-clock using neon lamps as logic
    Weak light alarm SCZ07 a circuit diagram



    Top