Tagged Questions

2
votes
2answers
188 views

technology to search small objects like pendrive, key-chains etc

I am a web developer by profession. few days back I lost 8gb pen-drive :( I don't it is in home or somewhere else.... So now I am thinking of a device which can be attached with small objects so that ...
1
vote
1answer
340 views

IR-Receiver signal almost constant

I have followed the tutorial from Makezine about an Infrared heart-beat sensor, and I have essentially used the same components listed on the video (that is, the same resistors and the same IR Emitter ...
2
votes
1answer
431 views

Amplifying signal from CO2 Sensor

I am trying to amplify a MG811 CO2 sensor to a range readable by an ATMEGA2560 (0-5v). I have other analog sensors, so do not want to change ref voltage on Atmega. I have found a module that scales ...
8
votes
3answers
498 views

Simple Adaptive Amplifier Options for Sensor Interfaces

Related: High Resolution ADC for Noisy Sensors in Variable Conditions I'm building an interface using resistive textile-based sensors that may have different resistance ranges depending on ...
2
votes
1answer
176 views

What should I be using to amplify a heat flux and load cell signal?

For my senior design project, we have various sensors (Thermocouples, Heat flux sensors, load cell) plugged into our DAQ. We are using LabView and some National Instruments devices (ugh) and ...