Hi! Great video! I understand why we use all the components except the MOSFET transistor. What's the point of using the MOSFET transistor? Is it something we use to control components, as it provides a digital connection (between the Arduino and the component) and hooks it up to ground?
The Arduino's I/O pins cannot provide enough current to directly drive a motor or solenoid. If you check out our Arduino tutorial playlist (linked in the description) there are other videos on DC motors and external power that explain this a little more.
You're correct, a relay would work here as well, but not for controlling the speed of a motor with a PWM signal from the Arduino where you need the faster switching of a transistor.
I have a 3.7v tiny valve solenoid which has 2 black leads, and doesn't seem polarity sensitive. Do I still need a diode? Thanks for the informative video
I have a 12v solenoid and a relay, I don't have any mosfet or diode on my solenoid. Which is directed to relay. the relay is connected to the battery and solenoid, and to Arduino relay has NO, Common, IN. Is this safe? It is causing a random signal on my coin slot IR sensor, which is causing a count even though I'm not dropping a coin in the slot. Please help me.... this is for my project at school.
Hi - we recommend asking for help in a dedicated electronics forum like the official Arduino forums or a place like Reddit or Stackexchange. You will need to post pictures of your circuit and your code in order for people to help you, otherwise nobody can really tell what exactly is going on.
The solenoids are linked in the materials list of this project: www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p109/electricity-electronics/refreshable-braille-display#materials
@@Science.Buddies Thank you. If I am not planning on firing all solenoids at once, ever, can I get away with duplicating everything off of pin 4 (and power) and adding more solenoids to fire based on user input in the code? Or do I always need a big enough power supply to power all 6 (even if I don't need to use them)?
Hi - this gets a little more complicated than what we can answer in a UA-cam comment, you might want to ask in the official Arduino forums or a forum dedicated to electronics.
Good video. Always enjoy the information. Well presented.
Thank you.
Thank you for helping me again :)
Hi! Great video! I understand why we use all the components except the MOSFET transistor. What's the point of using the MOSFET transistor? Is it something we use to control components, as it provides a digital connection (between the Arduino and the component) and hooks it up to ground?
The Arduino's I/O pins cannot provide enough current to directly drive a motor or solenoid. If you check out our Arduino tutorial playlist (linked in the description) there are other videos on DC motors and external power that explain this a little more.
what transistor and diode are you using
For the diode, a common rectifier diode like 1N4001. For the MOSFET, RFP30N06LE 30A 60V N-Channel Power Mosfet TO-220
Would a relay here work as well in replacement of a transistor? I thought transistors are meant for fast switching
You're correct, a relay would work here as well, but not for controlling the speed of a motor with a PWM signal from the Arduino where you need the faster switching of a transistor.
Hlo
I tried the project solenoid door lock using rfid and arduino.solenoid is not controlling.what would be the reason
I have a 3.7v tiny valve solenoid which has 2 black leads, and doesn't seem polarity sensitive. Do I still need a diode?
Thanks for the informative video
Hi - technically it's good practice to use a flyback diode for any inductive load like a motor or solenoid.
@@Science.Buddies Thanks. I've got it running without one, or a capacitor ,and it seems fine.
can you help me wire a 12volt solenoid with only 9v
🔥🔥🔥
I have a 12v solenoid and a relay, I don't have any mosfet or diode on my solenoid. Which is directed to relay.
the relay is connected to the battery and solenoid, and to Arduino
relay has NO, Common, IN.
Is this safe? It is causing a random signal on my coin slot IR sensor, which is causing a count even though I'm not dropping a coin in the slot.
Please help me.... this is for my project at school.
i hope you reply here
Hi - we recommend asking for help in a dedicated electronics forum like the official Arduino forums or a place like Reddit or Stackexchange. You will need to post pictures of your circuit and your code in order for people to help you, otherwise nobody can really tell what exactly is going on.
I have a 12v dc 5-2 Solenoid valve that I want to control with arduino. It’s a much bigger pneumatic actuator, will this work for that.
You'll want to check out some of our other Arduino tutorials, especially #'s 16 and 19: www.youtube.com/@Science.Buddies/search?query=arduino%20power
Solenoid part number/item name?
The solenoids are linked in the materials list of this project: www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p109/electricity-electronics/refreshable-braille-display#materials
@@Science.Buddies Thank you. If I am not planning on firing all solenoids at once, ever, can I get away with duplicating everything off of pin 4 (and power) and adding more solenoids to fire based on user input in the code? Or do I always need a big enough power supply to power all 6 (even if I don't need to use them)?
Hi - this gets a little more complicated than what we can answer in a UA-cam comment, you might want to ask in the official Arduino forums or a forum dedicated to electronics.