Sensors convert a physical quantity (e.g. temperature, pressure) into an electrical signal.
1
vote
0answers
29 views
Internal temperature sensor for the MSP430 - energia
I'm trying to use the internal temperature sensor for the MSP430G2553 with energia (a branch of arduino for the TI MSP430 microcontrollers) but to I'm having trouble calibrating it. The solution I've ...
0
votes
2answers
87 views
Colour Sensor from discrete components?
I am participating in a robotics competition that requires colour detection using discrete components.
The aim is to detect red and green lights of traffic signals.
I have tried making a sensor ...
0
votes
1answer
28 views
How do I adjust the sensitivity of a PIR sensor
I use a PIR sensor (https://www.sparkfun.com/products/8630) with Arduino to detect people's presence. The sensor detects very well the movements directly in front of it, but it is less sensitive to ...
2
votes
1answer
78 views
Amplifying and Reading a 0-1 V signal into Arduino
I'm trying to read the (0~1V) output of a current transformer (CT) into the 10-bit ADC input of an Arduino Nano. The CT is sensing the L wire carrying 120V at 60Hz.
...
1
vote
2answers
45 views
Daisy chain (parallel) of IR sensors
I've got 5 little Sharp IR sensors I need to wire to an Arduino.
These are the sensors: https://www.sparkfun.com/products/242
Trouble is, I need to put the connections in a relatively small area.
...
2
votes
1answer
62 views
Current Transformer giving a reading when not clamped around a wire
A split core current transformers is currently clamped around a live wire. One end of the transformer's output wires are connected to the analog pin of an Arduino and the other end has a 2.5V bias ...
4
votes
1answer
70 views
Which photo sensor should I use in dust prone areas?
I am trying to automate the street lights near my house by using a photo sensor.
But before even starting I thought of asking if there is any way of sensing light in dust prone areas, since I don't ...
-2
votes
0answers
44 views
Relational positioning hardware [closed]
Suppose two objects in a 3d-space. Is it possible to make a device installed on each of objects that will detect the relational position of objects (\$\Delta x, \Delta y, \Delta z\$)? Is should be as ...
0
votes
4answers
71 views
Light sensor to sense light level
I have an application where I am trying to monitor a defect in a web based manufacturing process.
This defect can be seen if one side of the substrate is lighted and the transmitted light is viewed ...
0
votes
0answers
67 views
Distance sensing with comparator
I want to implement a alert system using a comparator circuit. The circuit will alert the user when he is a certain distance away from an object of interest. The comparator circuit will comprise of an ...
2
votes
1answer
54 views
The options for communicating sensor data in a medium size building
What are the options for communicating sensor data to a central point in a medium size building?
I want to build a cheap centralized temperature control.
In each room there are about 4 radiators ...
0
votes
1answer
29 views
Touch Lamp Control Parts
I'd like to build a lamp for my girlfriend's birthday. The lamp would change colours if she touches the lamp base.
My idea is to use Arduino Nano as the "intelligence" and a line of sensors under the ...
0
votes
0answers
22 views
Setting the range of a grid thermal sensor
I have a question upon reading data through the thermal sensor row by row.
For example, my sensor has a 4x4 grids, I want to read each row and by taking the average temperature per row divided by ...
0
votes
1answer
42 views
How do I replace a CdS sensor in a circuit with an ALS replacement?
I am wanting to replace a resistor in a 555 circuit with a light sensor, but don't want to use the traditional CdS cell. I'd like to use an ALS such as the Everlight ALS-PDT144-6C/L451. This is the ...
0
votes
0answers
40 views
How to set up communication channel between a PIR sensor and a computer
I need PIR sensors to send data to my laptop, preferably over wireless. What are the components I need to buy? How do I set them up?
Here's the background of the problem:
I want to deploy PIR ...
