Questions tagged [voltage-protection]
Use this tag when referring to circuit or component for voltage protection.
37 questions
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What may have happend to this arduino NANO?
Accidentally I just short circuit my arduino nano, using a led neopixel, between the 5vOutput with one of the data pins.
Now the pc doesnt recognize the device when I connect it.
In the device (a ...
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power 12v solenoid from DC jack of Arduino Uno
I was wondering if it is possible to power up a 12V solenoid valve from the DC jack of the Arduino Uno, provided that I'm powering the Arduino from the same jack:
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What is the over-volt, over-current or over-power limit on a pin to an Arduino Mega 2560
I have an input voltage going to an Arduino pin that could be up to 5.25 V. I have many options on solving the problem but the simplest would be to include an inline resistor that limits the power ...
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Continuous voltage on IO Pins while 5V is not Connected?
i have a small project where i just sucessfully destroyed my frist of 5 Digisparks (Attiny85).
In the Picture you see the Cirucit. I have 2 Liion cells connected in series to get high enough voltage ...
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Vin pin vs USB vs Barrel connector: Wemos D1 R2
@Majenko says in the leading (19 Upvote) answer here not to use VIN and USB socket at the same time.
You must never ever connect VIN to a power source and connect the USB socket. That can destroy ...
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CH340 chip getting fried after connecting Arduino to a powerful 12V souce
I'm using a 120 W DC power supply connected in parallel with ESC and Arduino nano through Vin. However, somehow the Arduino get fried near the CH340 chip, i.e. around the big black square chip near ...
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need at least 5 volts but 3.7 lithium polymer battery does not supply enough Voltage
I am building a device using an Arduino Nano, an OLED display and infrared thermometer sensor. I want to make it rechargeable so I am using a 1 cell lipo battery and a tp4056 circuit protection board, ...
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Does NodeMCU have some protection against wrong connections that could kill a computer USB?
I know some computer USB could handle some bad connection (by blocking the port, which need to reboot the computer). But I wonder if a NodeMCU 8266 offers some protection.
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Different voltage sources across Vin and DC jack
So I understand that the USB VBUS circuitry turns off provided there is a high enough vin voltage using the PFET and comparator.
I can see that the DC jack is connected to the Vin pin via a diode.
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Electric meter pulse counting using LLC
I am trying to create an electric meter reading setup for Arduino, and I have been searching for it and almost every posts available is using LDR sensor.
http://www.reuk.co.uk/wordpress/solar/...
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Why is there a third connection to the host in this 3 wire current output sensor diagram?
I've got a 3 wire 4-20mA current output sensor, externally powered by 12V, which I want to read from an Arduino Uno (5V). The sensor connection diagram is below, but I don't understand why it says to ...
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Grounding for arduino, measuring phase controllled 240V
I would like to measure a phase controlled 240Vac waveform as a digital PWM input for an arduino. The signal would look something like this:
My intent was to use a zener clipping circuit to limit the ...
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Connect Arduino Uno RX/TX to 3.3v NEO-M8N gps module
I'd like to connect an M8N gps module to an Arduino Uno. From what I understand
the Arduino pins 0-RX/1-TX work on 5V
the M8N RX/TX work on 3.3v
the sensor-TX sending to the Arduino-RX should work (3....
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Are the output pins on the 74HC595 shift register protected against shorting?
In the following schematic you can see that Q1 and Q4 both are connected to a Arduino's Digital Input Pin. So if Q1 is high and Q4 is low, would there be current flowing from Q1 through Q4 (and ...
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Correct Capacitors to use with L7805 Voltage Regulator
I am making my own arduino. I am in the process of hooking up power to the Atmega328.
In both these articles they use the L7805 voltage regulator with two 10uF capacitors.
https://www.arduino.cc/en/...
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