Contents
Are Raspberry Pi GPIO pins 5V tolerant?
The Raspberry Pi GPIO pins work with 3.3V logic levels and are not 5V tolerant. If you apply 5V to a GPIO pin you risk permanently damaging it. However, you can easily use 5V sensors or modules if you convert their 5V outputs to 3.3V using a level shifter.
How many 5V and 3V pins are present in the Raspberry Pi board?
The raspberry pi has a 2 constant 3v3 pins that are always on, 2 constant 5 volt pins, a lot of 3v3 gpio pins, and 5 ground pins.
How much voltage can a Raspberry Pi output?
A voltage between 1.8V and 3.3V will be read by the Raspberry Pi as high; anything lower than 1.8V will be read as low. Do not allow an input voltage above 3.3V, or else you will fry your Pi!
Can you use a 5V sensor on a Raspberry Pi?
The Raspberry Pi GPIO pins work with 3.3V logic levels and are not 5V tolerant. If you apply 5V to a GPIO pin you risk permanently damaging it. However, you can easily use 5V sensors or modules if you convert their 5V outputs to 3.3V using a level shifter. This ensures the GPIO pins on the Pi only see a maximum of 3.3V.
Can a GPIO be connected to a Raspberry Pi 3.3V?
So if you connect the output pull-up resistor to the Pi 3.3V and the output to the Pi GPIO it will work. If the device outputs a square wave (i.e. a digital signal) you should use a level converter. These are quite inexpensive and guaranteed safe. They are readily available on-line and from most retailers who sell Pi products.
Can a GPIO be connected to a 5V device?
Now, knowing that connecting a 5v device to the pis gpio that are using 3.3v, i would probably kill the pi. I know you can put some resistors to step down the voltage to 3.3v, but I have no clue of how what resistors to use and how to connect them. Could someone please help me telling me what resistors to use and how to connect them? Thanks! 🙂
Can a Raspberry Pi pullup to 3.3V work?
If the output is open drain, then connecting the pullup to 3.3V should work, but again detail of the interface is required to be sure. Thanks for contributing an answer to Raspberry Pi Stack Exchange!