Measurement projects

Laser Position Sensor

Laser Position Sensor is an optical sensor that measures and provides the two-dimensional coordinates of visible red laser light shined onto its surface with resolution of 0.0001″. Laser Position Sensor can be used for positioning and alignment, long-range beam-break/security trip wires, remote device control, data communications, and high-speed photography.[more]

Posted in : Laser projects | Measurement projects | Sensor projects

Latching Continuity Tester

This latching continuity tester detects intermittent (and steady state) opens and shorts. The tester will detect and latch on an intermittent condition with a duration of less than a millisecond. In addition, it provides both visual and (defeatable) audio indicators, uses only one inexpensive and easy-to-find IC, and can be built very cheap if you have a well-stocked junk box. [more]

Posted in : Measurement projects

PIC16F684 based Digital Amp Meter

This is a PIC microcontroller based Digital Amp Meter. It can measure AC or DC current up to 30A and display on 3 digits 7-segment with resolution 100 mA. The ACS712 from Allegro to be used for current sensing. It is designed for ease of use and no calibration required.[more]

Posted in : Measurement projects | PIC projects
Arduino based Water Tank Depth Sensor

Water Tank Depth Sensor
This project uses a device called a differential pressure transducer to measure the water pressure at the bottom of the tank, and from that to calculate how full the tank is. Water pressure increases by about 9.8067kPa per meter of depth so a full tank 2m tall will have a pressure at the bottom of about 19.6134kPa above ambient atmospheric pressure.[more]

Posted in : Arduino projects | Measurement projects

AVR-based power usage logger

This device monitors household power usage and logs it to an SD card. A simple analog front-end amplifies the signals from voltage and current detectors and an ATmega168 microcontroller computes the power consumption using the formula P=V*I. The voltage and current are each sampled at 9615 Hz so the integration should be fairly accurate even for highly non-sinusoidal loads such as computers or fluorescent bulbs[more]

Posted in : AVR projects | Measurement projects