All Questions
Tagged with measurement arduino
32
questions
0
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3
answers
105
views
How to measure multiple resistances with Arduino Uno, without one measurement influencing the other?
I'm working on a project where I aim to measure resistances using an Arduino Uno. I started with two separate voltage dividers, each using a 1 MOhm reference resistor, connected to a common Arduino ...
- 43
0
votes
0
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140
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Measure capacitance with Arduino and AD7746
I want to measure capacitance with an Arduino and an AD7746 capacitive sensor.
I already used ChatGPT and some examples, but the sensor measures just 0 pF. When I measure with an LCR meter, the ...
2
votes
0
answers
106
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S11108 Circuit Design Logic
This is my first post and also my first dip into electrical engineering, and I wanted to ask if you have any suggestions on the circuit I have designed. As a background, I'm a Computer Science student,...
- 21
0
votes
1
answer
143
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How to calculate frequency of an AC source with variable frequency using Arduino
I have an AC current source. Its properties are
Maximum Vrms=15v
Maximum Frequency 125 Hz
Minimum Frequency 5 Hz
The current source is pickup coil of a motorcycle... Vrms range is approximately 0.7v-...
1
vote
2
answers
196
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Measurement of output current of a photodiode
I am a German student. My task is to conduct a characterization of a photodiode (KPEIMC-UDCOM by Kyosemi.) The photodiode will be illuminated by 850-1550 nm laser diodes. It would be good (but not ...
- 11
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34
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Saving one measurement one display and recalling it using Arduino
I am using an Arduino with 49E Hall sensors and a 16x2 LCD display and buttons. If I push the button, I want to display the current measurement of the hall sensor (one number). And if I push the ...
0
votes
1
answer
429
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Problem with mesuring value from current sensig pin on VNH2SP30
I connected the Monster Motor Shield (based on the VNH2SP30) to the Arduino Uno and successfully drive the engine, but I can not measure the value from the CS pin on this board (the voltage at this ...
- 101
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votes
0
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610
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How to connect bathroom scale (arduino+hx711+spark load connector)
Im a new user in the electronic world. I tried to hack my bathroom weight scale but no success. There is a great tutorial which I followed:
https://www.youtube.com/watch?v=iywsJB-T-mU
my parts:
...
- 121
1
vote
1
answer
359
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Calculation of active power and apparent power through sampling
I'm currently working on a power meter device based on simultaneous sampling of current and voltage values, I intend to use this system to measure the active, reactive and apparent power on a non-...
2
votes
2
answers
2k
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Measuring the power output of a hand-crank generator
I am working on a project which aims to compare the energy generated from a hand-crank, DC generator, to that of solar panels. The hand crank generator will not actually be powering anything, but we ...
- 21
0
votes
1
answer
900
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Measure small capacitance value
I need to measure C value continuously over time, and save the value to some text file (csv for example). Note that C changes over time, since the system is dynamic.
C are small, varies between 50 to ...
- 235
0
votes
0
answers
850
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Making a Tachometer using LED and Laser?
I am making a tachometer to measure speed of a wheel using a LED and Laser.
The phenomena is that when Ray of Laser is shown on LED , 0.5 V are produced. I will connect a Schmitt trigger (made using ...
- 150
0
votes
1
answer
3k
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Amplify Shunt Resistor Voltage to an Arduino Using an Op-Amp
Basically, I want to measure the voltage across a shunt resistor (1.12mOhm) and feed that to an arduino analog input to obtain a measurement of a current drawn from a battery. I would like to obtain a ...
- 629
3
votes
1
answer
9k
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How to measure power factor cos phi with an Arduino?
according to How does one measure the power factor? I can measure the power factor (cos phi) by comparing the zero point crossing of Voltage and Current. This is clear.
The problem I have is what if ...
- 301
1
vote
1
answer
6k
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Arduino piezo vibration measurement circuit
I'm looking for a very simple measurement circuit to measure vibrations with a piezo elment and an arduino device. I want to read positive and negative values.
I have this sensor: http://www....
- 197