Control a Pump with Arduino (Lesson #15)

[@radiamoon2395]

thank you so much, i had a project two years before but failed to get a good result. but now i understand everything and where i failed thanks to your notes

[@Jellyfishgift]

We're using a 12 volt motor instead of a 6 volt one. Could you send me a link to a transistor that you would recommend and could you tell us which transistor you were using in the video? Thank you❤

[@kyf6705]

10:40 how does the pin 9 will gives the speed to mosfet and the mos gives it to the dc motor?

[@johnnycoolguy9554]

Pin 9 is a PWM pin, which basically means it can transmit power at variable levels, rather than an I/O pin which just turns on and off. Their code takes the reading from the potentiometer, which transmits data in 10-bit, and converting it to 8-bit for the output range. So when the Arduino receives a signal from the potentiometer, it sends a corresponding 8-bit signal through the 9 pin which tells the MOSFET to turn on with a specific voltage corresponding to the value coming from the potentiometer. Logic Arduino reads an integer going into Analog Pin A0 Potentiometer Sends a Speed integer value to A0 pin ranging from 0-1023, which gets translated into a range of 0-255. Pin 9 sends out Voltage corresponding to the value of the potentiometers current state (ex. 128 = ~2.5v, 255 = 5v) which the MOSFET opens the circuit to send out that voltage, which powers the pump.

[@alexyakirevich7234]

Hi. Thank you for your instructive content and videos. I am a beginner at this with zero programming skills. I am trying to set up a system to monitor garage for water leakage and if there is one to trigger a vacuum cleaner to collect standing water. I wired up an off the shelf sensor (the Watchdog Water Alarm) to trigger the vac through an IoT Relay, as soon as water is present. Now I am trying to add arduino to this to control the system more intelligently. Specifically, a vac needs to run for few seconds longer *after* water has been collected, and the sensor is off to allow water inside the hose to be fully absorbed into the vac instead of leaving back on the floor after the vac shuts off. What is the best way to code this in arduino? Any suggestions would be great. Thank you

[@ArenaFilms042]

Hey can i get a link to where i can get this 4 as battery case

[@Science.Buddies]

If you search Amazon for "4xAA battery holder" there are many options.

[@danmihaescu4687]

There is no need for a reverse diode to protect the circuite when the motor turns off?

[@Science.Buddies]

In general it's a good idea to include one, in practice with an Arduino and small motors it seems that you can get away without one and not cause any damage.

[@danmihaescu4687]

@@Science.Buddies Thank you, and thanks for pointing out this aspect in the other video which I saw later.

[@itxrawan]

Hi! great video I just wanted to ask if a relay module could replace both the button and the transistor and if no what will the connection be like between the transistor and the relay

[@Science.Buddies]

Hi - there are some details about using transistors vs relays that we can't really cover in a KZbin comment, you would need to ask in a more dedicated electronics forum like Stackexchange or the official Arduino forums.

[@nizoooo69]

nice vid i love your videos thanks for the information! is there any full vids of arduino 101? and can u make some tinker cad projects like not irl

[@Science.Buddies]

You can see our full Arduino playlist here: kzbin.info/aero/PLlBVuTSjOrclb0iCMSRpS_H1lSrlSVeEm. We do not currently have any videos on the Arduino 101, but many of the videos do use Tinkercad to demonstrate the circuit and code.

[@idotouchgrass5320]

hey man i wanna create a soda machine for a physics project where i wanna use a scanner in which when placed a cup with qr code attached to it the scanner will scan it and the electric pump will pour soda directly into the cup so can i use this pump for tht purpose

[@Science.Buddies]

This pump will work to transfer liquids but please make sure any pump and tubing you purchase are labeled as "food grade" if you will be drinking the soda.

[@McCapper]

how do I code it so that it only transfers water for a couple seconds. I don't want a lot of water to come out. I just want it to pump water out for a few seconds and then stop.

[@Jellyfishgift]

In the video what are the red and black alligator wires connected to?

[@Science.Buddies]

They are connected to the pump on one end and to jumper wires that go to the breadboard on the other end.

[@Jellyfishgift]

@@Science.Buddies We're using a 12 volt motor instead of a 6 volt one. Could you send me a link to a transistor that you would recommend and could you tell us which transistor you were using in the video? Thank you❤

[@PixelGaming123]

Hey what mosfet should i buy so that i can use an arduino uno to power a motor rated 6v and has more than 1amp current

[@Science.Buddies]

We typically use these or something similar: www.amazon.com/gp/product/B07CTF1JVD/

[@planet_whale]

Can we use a sensor instead of the button? The code should be changed then? Just for on and off

[@Science.Buddies]

Hi - how you would change the code and circuit depends on what type of sensor you want to use. We have several videos covering sensors in our Arduino tutorial playlist that you can check out.

[@juanmorenonadales9275]

Hi! Thanks a lot for the video. Which NMOS model did you employed to drive the 6V peristatic pump? thanks

[@Science.Buddies]

These or something similar: www.amazon.com/gp/product/B07CTF1JVD/

[@patycamara3279]

Hi! Will it be okay to use a 2N2222A or a 2N4401 transistor? I couldn´t find the NMOS :(

[@Science.Buddies]

Hi - yes, you can use an npn BJT instead of a MOSFET, but the circuit is slightly different because 1) while the BJT's pins (base, collector, emitter) are roughly analogous in behavior to the MOSFET's pins (gate, drain, source), they may not be in the same physical order 1-2-3, so you need to check the datasheet for the pinout and 2) the BJT requires a resistor on the base pin.

[@lorainejoyplaida6888]

is it possible to set an amount of water to dispense? like only 2ml

[@Chipsu]

For this you would need to have something like a flow sensor to calculate the liquid going through or just time it in a code but it can be inaccurate

[@gn2b129]

some pumps specifications say the ml that can go through per second, maybe you can calculate how long the pump should be on for using that spec

[@henrilahteenmaki3838]

This seems interresting to one of my current projects. I do have a question. Is it easy to add another pump to run at the same time with one button press? I would like to add liquid to a container and remove the same amount of liquid at the same time from the same container.

[@Science.Buddies]

Yes, that's very easy to do, but adding another pump will draw twice as much current and you might not be able to power it directly from the Arduino. Please see this video: kzbin.info/www/bejne/f2iwo39rhpytrLssi=jFzYVQjESj3mYQEH

[@MrIPiterek]

why does my motor works for a few seconds and then stop and when i switch + and - it works again for a while

[@Science.Buddies]

We can't say for sure without knowing more about your circuit and code. If you are a student doing a school science project you can ask for help in our Ask an Expert forums but you will need to provide more information: www.sciencebuddies.org/science-fair-projects/ask-an-expert-intro. If you are not a student doing a school project then you may be able to get help in the official Arduino forums: forum.arduino.cc/

[@Asto-qg6hg]

hello having same issue did you end up finding a fix?

[@turtle7701]

Is a mosfet transistor necessary? Or can other types of transistor be used also? If so which ones?

[@Science.Buddies]

You could use a BJT transistor instead - we don't have our own tutorial for that, but you can find them online.

[@turtle7701]

@@Science.Buddies may I know if I should use a npn or pnp transistor?

[@Science.Buddies]

npn's are more common for this application

[@Jcff342d7eay]

Great tutorial, may I know where can I get the code of this tutorial?

[@kirameki7331]

what about a spray type pump? is it possible?

[@l0st12]

Is there anyway to power both the arduino and the 12v pump using only a 12v 1a adapter

[@Science.Buddies]

Short answer yes, but more than we can explain in a comment. See this page: docs.arduino.cc/learn/electronics/power-pins/

[@paweljelonek6407]

Great video

[@josephdaquila2479]

Does the pump you select have to be specifically designed to be controlled with PWM?

[@Science.Buddies]

All DC pumps and motors should work with PWM.

[@josephdaquila2479]

@@Science.Buddies great thank you science buddies!

[@rorycampbell1924]

Would the functionality be the same for an npn resistor?

[@Science.Buddies]

The functionality is ultimately similar but the circuit is not identical. We don't have our own tutorial on npn transistors but you can find plenty online if you search.

[@Sealawg]

What type of wire is needed for the battery

[@hershes9059]

what would you do if the external power supply a doesn't have a positive/negative end such as a barrel connector

[@Science.Buddies]

You can buy a barrel jack adapter like this: www.amazon.com/UltraPoE-Connector-Adapter-Secruity-Terminal/dp/B0BTHTBKL1/

[@hershes9059]

@@Science.Buddiesthank you for replying ! I meant that Im using a 12 V DC adapter that requires using a barrel jack connector . How would you wire the power supply if it doesn’t have a positive or negative wires?

[@hershes9059]

Would the wiring matter in that case ?

[@Science.Buddies]

Hi - to clarify, you plug the barrel jack from the power supply into that adapter, then you connect jumper wires to the screw terminals of the adapter and plug those into your breadboard. Most power supplies are center-positive meaning the middle of the plug is positive and the outside is negative, which will correspond to the + and - labels on the screw terminals of the adapter.

[@ragnarok8234]

If you were to use this for a hydrophonic system where I want to make the pump activate every 4 hours for X amount of time how would I be able to integrate it to this circuit? Thanks :)

[@Science.Buddies]

Hi - there are multiple ways you can do this. We recommend looking into the Arduino delay() and millis() functions. There are also libraries like TaskScheduler: www.arduino.cc/reference/en/libraries/taskscheduler/

[@planet_whale]

Can we use a normal transistor

[@randomGBAstuff]

Thanks buddy

[@scientistplayz.y.t2089]

Can i use a 5v water pump and not use that transistor

[@theskepticcoder7883]

so tinkercard exists, i should have known before i bought my arduino smh, it feels great to have it on your hand tho not gonna lie

[@jellyshaf]

hii quickly ask what is the blue thing in the middle that u push?

[@Science.Buddies]

That is a pushbutton with a blue plastic cap. We have a tutorial about buttons here: kzbin.info/www/bejne/r3PKfn2pqL2kfrssi=xXAfag6-eIzCdEUH

[@jellyshaf]

thank youuuuuu@@Science.Buddies

[@jellyshaf]

hi i do have problem with the coding (first coding that just use mini push button and no battery), i try to do it on arduino ide software but i got error, may i know why@@Science.Buddies

[@jellyshaf]

6:30 using transistor

[@Science.Buddies]

Hi - unfortunately we can't help troubleshoot code in KZbin comments, but if you post your code and a detailed question on the official Arduino forums someone may be able to help you.

[@mixGame6203]

What is the name of this simulation program ??

[@Science.Buddies]

It's called Tinkercad and we have a tutorial about it here: kzbin.info/www/bejne/b4OpkHWQZqiaas0si=VIB8ZTzJvKkUOohx

[@nedhirahh]

can i know what kind simulation did you used ?

[@Science.Buddies]

The online simulator is Tinkercad Circuits (www.tinkercad.com)

[@planet_whale]

I mean say the name of the transistor

[@Science.Buddies]

The type of transistor in this video is called an N-channel MOSFET. There are many different types, but here is an example: www.sparkfun.com/products/10213

[@AdamPlaysFN]

where is the script itself

[@Science.Buddies]

KZbin descriptions don't like Arduino code formatting so we couldn't paste it in - you will have to pause the video and transcribe the code (the program isn't very long).

[@AdamPlaysFN]

@@Science.Buddies oh OK thank you very much I will write it now because I want to try it thank you ❤️

[@planet_whale]

How to get that code?

[@Science.Buddies]

Unfortunately KZbin doesn't like the formatting of Arduino code when we try to paste it into the video description and it gives an error message, but you can pause the video and transcribe the code instead of copy/pasting it.

[@omarph1086]

Im using a temp sensor, soil humidity sensor and a screen Using PN 2222A transistor Pin(1) source Pin(2) base Pin(3) drain I added 1k ohm resistor for the base pin for the transistor For the pump im using external source When my pump works my temp sensor and screen stops working even when the pump turn off they dont work back But the soil sensor is still working fine What could be the problem

[@Science.Buddies]

Hi - if you are a K-12 student doing a science project, you can ask for help in the Ask an Expert forums on our website. We will need to see your code and pictures of your circuit to help you troubleshoot, we can't tell what's wrong just from a written description. If you are not a K-12 student, you may be able to get help on the official Arduino forums or other forums dedicated to electronics on sites like Reddit or Stackexchange.

[@theguybesideyou]

pointless

[@Stocks4Tomorrow]

program not working

[@nursyazwinadaniabintishaha6544]

me too