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Questions tagged [mosfet]

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Issue with a 12v switch via GPIO output

I am a beginner when it comes to electronics so I would appreciate your help with a simple project I am working on and have been struggling with for several days. The idea is that I have a PIR Sensor ...
orange orange's user avatar
2 votes
1 answer
2k views

Driving a WS2815 (12V, addressable) LED strip

I am trying to plan what I need to drive a 12V addressable LED strip with the Raspberry Pi (4, likely, or zero, but I want Ethernet connectivity). I am not sure I understand the WS2815 datasheet (PDF)...
asoundmove's user avatar
1 vote
2 answers
738 views

Which of those listed logic level MOSFET to choose for driving a heater

I'm planning to control 3 LEDs and a heating element (5 Ohms) using a Raspberry Pi. The main power supply outputs 12V & 5A. Using an L78S05CV Voltage regulator, I'm planning to power the RPi. So ...
J. Doe's user avatar
  • 131
1 vote
2 answers
1k views

Power MOSFET Driving Big Motor Problem

I am using the power MOSFET IRF504N. I am not sure if my Rpi's GPIO 3V3 signal can directly input to the gate of the MOSFET which requires 4V minimum. I guess that I don't need a gate driver to shift ...
tlfong01's user avatar
  • 4,705
1 vote
0 answers
317 views

Cannot lighten up 12V LED strip with Raspberry pi 3

Bought a 12V 5M RGB LED Strip a 12V 5A power supply 6 IRLZ44N mosfets. i am trying to light up the led strip with PiGPIO. followed the https://dordnung.de/raspberrypi-ledstrip/ tutorial. and the led ...
KiarashRzg's user avatar
0 votes
1 answer
168 views

LED always on while using FET

I want to switch on/off some LEDs on a breadboard using my Raspberry PI (RPi) 4. Before connecting with my RPi, I've tried to do some experiments with using a BS270 FET in an old-fashioned "dumb&...
Grubl3r's user avatar
  • 111
0 votes
2 answers
157 views

Detect if a raspberry zero is turned on

I would like to use an old raspberry zero 1.3 to share files in my home network, but I wish I could shut down the connected hard drives as the system shuts down. Initially I thought that it was enough ...
Pinguto's user avatar
  • 103
0 votes
1 answer
320 views

IRF530, can I put LED+resistor on input?

Can someone tell me if the following circuit is sane? It's a fairly standard lowside switch, but I've added an LED plus resistor. V_GS on an IRF530 is about 2v, so I assume that a small LED won't lead ...
300D7309EF17's user avatar
  • 1,374
0 votes
1 answer
181 views

Heatbed module control with Raspberry Pi 3+

I want to control a nichrome wire with the PWM signal from a Raspberry Pi. The MOSFET modules that can be found on the net for the combination with a Raspberry became much too hot. So I decided to try ...
Jan Schmidt's user avatar
0 votes
0 answers
15 views

Driving 6 electric channels on/off and voltage (48A / 30-41V) from pi

I would like from a pi, to drive a current of 48A and regulate voltage between 30-41V (1440-1968W !). Furthermore, this current will be split into 6 input, and I would like to be able to switch on/off ...
Soleil's user avatar
  • 107
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0 answers
56 views

MOSFET conducts current when no gate voltage

I have a Raspberry Pi 4B and a MOSFET IRLB8721PbF (https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdf) I have wired up a simple circuit with an LED, resistor, the MOSFET and a 6V DC power ...
Orlando Alexander's user avatar
0 votes
1 answer
305 views

gpiozero's LED.toggle() switches LED again after some seconds

I am using the gpiozero library to controll a LED strip and a relay connected to my raspberry pi 4. This is the way I connected the LED strip to the pins. I use a type SMD5050 LED strip similar to the ...
Jan's user avatar
  • 3
0 votes
0 answers
89 views

Choosing a transistor/mosfet in order to drive Peltier element from a RPI zero

I just found these two (1,2) low power consuming Peltier elements that I would like to include them to my project. What I'm planning to do is to drive them until to reach some specific temperature e.g ...
J. Doe's user avatar
  • 131
-1 votes
2 answers
56 views

Can I sink the 5V+ pin into a GPIO in open drain mode? [closed]

I just discovered 'open drain' mode in the libgpiod documentation and was wondering if a raspberry pi open drain pin can sink the current / handle the voltage from its own 5V pin via a pullup resistor,...
cmc's user avatar
  • 101
-1 votes
1 answer
531 views

What mosfet should i use for controlling a 24V 48W RGB ledstrip with a Raspberry Pi?

I am trying to control multiple 24V RGBWW (6-vein) ledstrips with my raspberry pi 3b+. The ledstrip is 2 meter (24W p/m) long, and will be cut into 3 pieces. I want to control each piece (~67cm) ...
vlreinier's user avatar