All Questions
Tagged with supercapacitor arduino
11
questions
0
votes
1
answer
83
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Can I use a large capacitor to boost the current of a circuit for a short period?
I'm working on an RPi-Pico (Adafruit Feather RP2040) project that runs off of computer USB power (5V/500mA-1A).
I need to simultaneously move 3 motors that run at 6V-8V/250mA, but only for ...
1
vote
1
answer
216
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Arduino for measuring Farads (vs micro/pico farads)
I've been looking for a way to use an arduino to measure capacitance of a supercapacitor that is likely to have a 4F capacitance based on experiments of others.
Several people have experimented with ...
1
vote
1
answer
277
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What size capacitor do I need to reliably close a 1" US Solid motorized ball valve?
I am making a water feature that will involve a stream fed by the basin of a fountain with a pump at the end sending water back into the fountain. To control the water flow rate through the stream and ...
- 203
4
votes
1
answer
384
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Capacitors in parallel going negative
Interesting (maybe?) question here which I am struggling to answer. Hoping someone can help.
I have a capacitor network; 5 caps in parallel and then two modules of that configuration connected in ...
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0
votes
1
answer
318
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What can I use to turn on a circuit at 5V?
I'd like to power an Arduino using a supercapacitor. I already have that part of the circuit figured out.
But I want to charge the supercapacitor using an external power source, without the ...
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2
votes
1
answer
2k
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Simple solar panel + supercap powered arduino
Long version (full story, so skip and go direct to questions below if you want to):
I have small arduino mini pro board powered by 230mAh Lithium coin battery used as wireless sensor (with NRF24L01 ...
- 177
2
votes
4
answers
100
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Measuring SuperCap current leakage avoiding voltages drops in ADC
I have a circuit with a SuperCap used as a battery. I want to know the curve of SC voltage in time to finnaly measure its self-discharge.
Is this can be done with a simple arduino or another ...
- 39
8
votes
3
answers
10k
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Powering an Arduino with a Supercapacitor
For the purpose of a project I wish to power an arduino using a supercapacitor charged to 5V. The supercapacitor will be fed straight into the power Vin and GND terminals on the Arduino. No power plug ...
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5
votes
2
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4k
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Super capacitor directly on the power supply
simulate this circuit – Schematic created using CircuitLab
I have an atiny with an RF emitter which would detect the 220V AC off in the circuit and send a radio signal.
to do this I use 2 ...
- 191
0
votes
3
answers
2k
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Using Super Capacitors with solar cells and batteries to help save my dogs
I am looking to make a dog feeding mechanism that will operate regardless of power outages. The main point of this query initially is to figure out how to work with the materials I have (or can get) ...
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1
vote
0
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951
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Controlled supercapacitor charging with buck converter
I'm building a charging circuit for two supercaps (2.7V, 3000F each) in series. I've got a 12V supply and a buck converter rated to 15A, which I've set to provide 4.8V. I'm using balance resistors to ...
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