How to use a breadboard power supply module for DIY learning electronics
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i bought my set, looked at it and found out i had no idea what to do next, decided to ask the internet and here you are, as "the internet". very friendly, very helpful. BIG THANK YOU
Glad it helped, thanks for watching!
The USB port placement is stupidly designed I am sure it caused a lot of damage out there. Thank you for showing that the USB port is meant to give power and not receive power.
WRONG here is the datasheet for the module
components101.com/sites/default/files/component_datasheet/MB102-Datasheet.pdf
@@peatmoss4415 Interesting, apparently the USB port is both taking as well as providing power. If there is no other power supply connected, it functions as receiver, in case there _is_ another power supply, it provides 5V of power.
@@peatmoss4415 The USB connector is (stupidly) HOST or A connector so it definitely should supply power, not receive it. Very stupid design because who needs to supply power from USB connector from a bread board? Device or B connector would be useful for bread bording USB DEVICEs.
The datasheet / design is wrong. If you play by the rules and only connect legit USB devices to this board then no device will supply power from the DEVICE to the HOST. USB OTG might do that but that is much more complex than what this board is capable of and the connector on this board is the original USB A / HOST connector from the days gone by when OTG was just a glint in the designers eyes.
@@Axel_Andersen just got one of these. it comes with a shielded male-male 30cm long USB-A to USB-A cable
Indeed the usb is for both power in and power out. I have a (very stupid) Y cable with USB-A, USB-A, USB mini from I dont know where, now it is very useful for powering my arduino nano and the power module both off a single USB hub. It is like to most stupid and useful thing on my desk right now!
Thanks for the video, sir.
I need to use this for my Microprocessor & Microcontroller class and as I'm not that skillful with electronics I was afraid to burn it or something.
This helped a lot!
Glad it helped!
Thank you for talking about the yellow jumper at 1:08, I’ve never known what it was called and what it does and google didn’t give results. Great explanation
THANK YOU SO MUCH
I was struggling for so long until I found this video and it helped me tremendously in in time of need!
Glad to hear, thanks for watching!
Hey masn you saved the day. Just received one of these from my cousin to help with circuit building.Your video showed me how to use it.
Glad to hear, thanks for watching!
This is the best video!!! I would recommend this video to a lot of people who are interested in this stuff thanks! :)
Sweet!
thank you so much you have taught me so much in a few minutes
Glad to hear, thanks for watching!
Awesome tutorial! Great information!
Glad to hear! Thanks for watching!
Great vid
I appreciate the way you explain things.
Glad to hear, thanks for watching!
Thanks for this excellent video and information. I just ordered a breadboard kit with power supply kit. I plan to design DIY model railroading projects.😊
Very cool. If I had space, I'd start doing model railroading.
thanks for the tip! I'm just starting out and did not know what this was.
Thanks for watching!
Useful video Paul, I have two of these and never use them probably b/c I've not had any instruction on them...that may now change.
Nice :)
*IMPORTANT* : There are known variants of this module without any regulation for the USB voltage. Check the voltage with a meter *before* using.
Thanks for the tip!
yeah i didnt - definitly dont plug it into your computer almost just fried the board and the computer :/
yeah i think one of these busted my nano
@@litedeveloper lol, why did you needed to connect the module to your pc?
@@Deriko31they probably thought they could program and arduino via the usb
Important: Always check the power supply for the polarisation. There are + inside and - outside AND vice versa! The latter are ment for powering guitar effect pedals! In this case you need an adapter changing the polarisation.
Thanks for the tips!
mb102-ps has protection against it, as far as I've seen. So, I should use + inside and - outside?
Ugggh, yeah, some pedals want 9V center positive, some 9V center negative, some other stuff like korg volcas want 9V center positive, but with a slightly smaller barrel connector. Check check check that polarity!
The diod creates a voltage drop when current passes through it. You can see this effect when you plug multiple led lights is series. After 3 red leds, the voltage appears close to zero.
I had bought an Arduino kit and it came along with it and at first I had no idea what it did so thank you very much 😊😊
Nice, I got one with an Arduino kit too.
Do you have a video of the oscilloscope that you have in the video because I just got one just like that but still learning about it.
Thanks for the video
Many thanks for the info.
Thanks for watching!
very crystal clear ... Thanks, Paul... I 've been waiting for a decade to understand the complexity of beadboard circuit
Hey thank you for this!!
Great job, thanks v much Sir...I had the same stuff....
Thank you! I just wired up one of these to a 9V battery, and it's powering a Nano BLE 33, and a SSD1306 display. Question: this seems weird to me; I thought I'd need to switch between the "5V output" from the Nano to power the rail when plugged in to USB (the way I initially had this configured), vs the "VIN" pin when powered by the HW-131. As a test I plugged the USB in, with the rail still connected to VIN rather than 5V, and the display still powered on and functioned!
I don't want to cook anything more -- already let the magic smoke out, trying a 12V power supply with the HW-131, which it says it's rated for. I know enough to be dangerous, at least I didn't fry the Nano or display! :)
Appreciate any insight on why the VIN pin is providing output for the display, when powered via USB. Thanks!
Thanks for the video.
Thanks for watching!
Thx was wondering what this was.
Im glad i saw this , i could not figure out why my bread board did not have power. 😮
Very useful video Sir! Thanks for sharing!
Glad to hear! Thank you for watching!
0:51 , what is the polarity of this 9v adapter you used ?
Is center positive or negative ?
Nice video, keep it up, thanks :)
Thanks for watching!
I took mine apart 😂. Guess what I learned?
The 5 volts get rectified then sent to the 3.3 volts. I would have thought both would be directly attached to the input but they're in line with each other. If you wanted to you could put a 9-volt and a 5 Volt or lower as long as you start by replacing the Fievel with the highest value you're looking to change it to and then the lower one after it where the 3.3 volt is currently regulates.
I short circuited it myself. That's why I took it apart
I also believe the 3.3 volt powers the led but in not sure
Nice :)
That's pretty interesting!
Input power to 5mm barrel jack is 6-12V.
Awesome video
Glad to hear, thanks for watching!
I know a dumb qsn. But can I plug the breadboard power supply to a charger / power adapter through the other pin(not the usb but the other input hole) if I can get maybe a 9v power adapter? Pls help. I guess it should work bcz the power adapter/ charger converts the AC from socket to DC. And if I can then what is the optimum volt of the charger/adapter I should use. And I am not talking about the USB input . I am talking about the other rounded hole input.
What resistor are you using in the LED? I am new to this stuff, and i am not sure what number to use.
With LEDs I usually use at least 220 ohm with 5 volts which is what a breadboard power supply provides. And at least 470 ohm for 9V and at least 1,000 for 12V.
Thank you very much for this detailed review, I couldn't find any info on how to use this anywhere.
This would've been more useful if we could use the USB to power it up instead of the 9v.
Edit: based on the comment section, looks like you can power it with USB but you need to make sure to unplug the 9v, they should've at least given a manual for this kit. and looks like its not protected and could fry your PC, glad I didn't connect it to my pc.
It should transfer a USB voltage to the board, but that's not the intended way to power it. I just bought some USB to alligator clip cables to use a USB power source to power circuits. And these cheap board should never be used to power sensitive electronics. Just basic circuits you are testing.
If you dont have a barrel jack adaptor for power, i stripped an old usb cable and soldered the leads (black and red cables) to the bottom of the board.
Hello! Is it possible to use the breadboard power supply to make a series connection of two power supplys to get 6.6V (2x3.3V) or 8.3 (5V+3.3V) or even 10V? Thank you for your answer!
You can probably connect them in series only if each one has it's own independent power source. If they share a power source, then it is probably a short circuit where the positive of one connects to the negative of the other.
Nice video. I hadn’t heard of breadboard power supplies. I also use a branch supply but often my projects need to be mobile to test so this is a nice option. By the way, I have to ask, are you from Wisconsin? Northern Wisconsin? You sound almost exactly like my cousin who grew up in Superior.
Bench power supplies are the best option, but if you have a 9V adapter or batteries and/or need portability, then breadboard supplies are useful. And, I have always lived in Minnesota in and around the Twin Cities, so I probably talk just like the average Wisconsinite.
thanks. Can I use normal cellphone charger as power supply? or any other such a power adapter/Charger?
The USB plug on this module is an output. You only power this module through the barrel plug. You can always get USB to alligator clip adapters if you want to power something directly from USB. Plus there's probably new breadboard modules that you can find that have more power source options.
Be aware, if you select OFF for either of the power rails, the "-" (ground) rail is still connect to ground.
I am trying to connect the HW-131 to my 5v LED Christmas tree. I have 3 AA batteries which I connected to one side and move the pin to the 5V output. I got nada, cero, zilch Nada. Any IDEAS?
Is there a usb hub that might protect usb ports from shorts, getting into the hobby and seen one user talk about a bad board shorting out a usb port, just trying to get ahead of something similar happening, at least, would rather a usb to short rather then my PC shorting while scripting.
We just want to hug you!
Great video, I have the exact same bread board. The only problem I have is that I thought the power supply came with the bread board. Any recommendations on where I could find a power supply like the one you used?
I like Amazon. Just search for breadboard power supply. Probably want a pack of 5, it's easy to fry them and they are less than $2 each. Also need an AC to DC converter with the right size barrel plug.
@@Electronzap my apologies I have a power supply. I meant like I didn’t have a barrel plug to power the power supply. Would I have to buy an oscilloscope like the one you had with the barrel plug or is there a way I can just buy barrel plugs? Trying not to spend extra money on an oscilloscope rn lol.
@@daltondelaney9534 it's a standard adapter you plug into the wall and has a 5.5mm X 2.1mm barrel plug. I'd post a link to one but I'm on my phone at work. I use one made by Soulbay that I got from Amazon. It has a number of plugs and an adjustable voltage. Need to make sure you don't exceed 9 volts with a breadboard power supply.
@@Electronzap gotcha I’ll give it a look. If you don’t mind go ahead and send me the link later if you get a chance I’ll be busy working also until tonight. Appreciate the information!
@@daltondelaney9534 amzn.to/3w4lEr6 is the one I bought a couple times. That's an affiliate link.
Nice video. The reason you do not appear to hold 5v, is that when both sides have a load the max current is a combined value, the ones I have max at a combined 500ma. Thus a load on both sides would dim the led(s)
You said, "... when both sides have a load..." and if you meant both sides of the breadboard, in this case one side is drawing from the +5V regulator and the other from the +3.3V regulator. Are you saying the max 500mA is the combined current of the two regulators?
What is the voltage of USB can I charge my phone from there.
New to breadboards (and electronics); what device should i use to supply my current?
Power supply that you plug into the wall and can set the voltage and maximum current is generally the best to use. These 5V modules powered by a converter that plugs into the wall are good if you only want to work with 5V and save some money. Can also use batteries if you want, but they aren't as easy to use. It's good to learn how to use all of them, So I've made a number of videos covering all of them.
I have the same power supply & breadboard. I'm a beginner & have just been testing it. I have been powering it through the DC in jack with a 5 volt 1500mA supply. Seems that it splits the 5 volts to 3.3 volt for each side?
Do you know where I can get a diagram picture for the power supply module?
Thanks
These modules are voltage regulators, which means that they basically just make it harder for current to flow as needed to maintain a lower voltage than the main supply voltage. So, If you only give it 5V to begin with, then I am guessing that it could only provide a maximum of about 3.5V. They are usually powered with 9V, but if you power the module with 7V, then it should still be easy for it to provide 5V. I don't have a diagram for the module.
I did this and trying to make a half gate but it just doesn't work like there is battery but something is different whenever I do any gate ...
@0:42 Or to remind you to not plug it in on the other end of the breadboard (unless you enjoy red for ground).
i have that exact board and i don't know how to use it can u tell me
Hi ,The specification online say I can power it up with 6 to 12 V dc ,I have an power wall adapter that is rated for 12 V and 1.5 amp . I tested it with the voltmeter and puts out 12.20 V , would this be ok or are there any risks ?
I think you will be OK, but from my experience these units tend to fry easily so it probably best to not push them to their limit if you can help it.
@@Electronzap thanks for the response , I'll try to find a 9 v adapter
There are some great high quality adjustable voltage power adapters out there. There are also some that are complete junk and even a few that are dangerous. But, they really do come in handy for things.
Hi, sorry am fairly new at this,. How to connect this to the arduino ide software on pc ? Thanks in advance
You wouldn't, this would be a separate power source for a circuit controlled by an Arduino. The arduino could be used to control a transistor, and this could power the circuit that is connected to the transistor, for example. I'd recommended watching a bunch of arduino videos until it makes sense.
What do I do if I need 9V? Is that possible? I had got one of those 'make your own arduino' kits and it needs to be powered. I have this plug thing you showed without the actual power adapter. Maybe I should buy a damn battery. lol. It would be nice to get this power adapter running though.
Just gotta browse websites that sell power supplies for one that meets your needs and doesn't cost too much.
will i be good with the ELEGOO Upgraded Electronics Fun Kit?
I don't keep track of what kits are available anymore. At one time I tried to build circuits that only used components available in the kit that I thought was the best buy at the time, but almost nobody bought those kits anyways. I just now quickly browsed the elegoo component kits on amazon, and they still look like something I'd recommend for someone looking for a starter kit.
I just got a kit with this and instantly popped the capacitor on the power bored
That's a bummer.
I have a question: Why does it have 4 pins on each side? And are they all supossed to be in the rails?
Yup, they all go in. 2 for each breadboard supply row. I would guess that they have 2 pins per row so that it is less likely to lose electrical contact and is held in place better.
I am your new subscriber 👍
Thanks! Glad to hear :)
can i use the usb fot connecting the arduino to the pc because i don't have the cable?
As far as I know, it is safe to power the rails by connecting a powered USB cable into the USB port instead of using a barrel plug.
I have been using the USB port to attach a power bank. Are you saying that the USB port is not supposed to bring USB power to the board? Is the USB supposed to be output only?
I've heard that other people use the USB to provide power to the breadboard. So looks like it is OK to use the USB connector either way. I'm sure it's connected directly to the pins going into the breadboard.
how can you short circuit protect this? just add a zener diode?
You need circuitry that quickly cuts power when high current flows, or that limits maximum. Not an easy thing to add to this setup.
Do you need to power it by 9v and usb at the same time or just usb is enough? In the video he had 9v plugged in the whole time.
The module is powered with the 9V barrel plug only. The USB port is for providing 5V USB power to something else.
@@Electronzap got it. Many thanks. It would be nice to have these usb chargers power breadboards though since they are easier to find
@@janakaone There are connector cables that you plug one end into a USB supply (such as a portable power bank), and then has alligator clips on the other end that you can clip to pin connectors on the breadboard for 5 volts. Many USB power supplies quickly turn off at low current though, which is very annoying..
@@Electronzap many thanks for the information. I didn't know about that issue with usb chargers before.
I have not yet received this item but one question. If you use barrel jack, then you have output on USB. If you DONT use barrel jack, and instead you use usb as input, whole thing should work? Like to use that usb from power bank.
I was told, that applying power to USB will power the pins on the board, which makes sense since they are probably connected directly together. Unfortunately power banks tend to quickly shut off pretty quickly if there is not enough current asked of them. I think somewhere around less than 0.5A
@@Electronzap OK usb is just connector, we could power it via USB wall adapter then. They are more common.
But obviously not use both connectors as input at once.
@@orion310591RS There is no legit USB cable that can be used to connect a wall adapter of power bank which has a HOST connector to this board which also has a HOST connector. Such a cable is banned by the standard and would be bad because it would allow you to connect two HOSTs together which would then try to feed each other.
According the Elegoo datasheet, when you move both jumpers to "OFF" the power LED indicator will turn off. I'm not sure that's actually true. Just something to keep in mind should you want only USB output.
Didn't know that, but I have a hand crank generator where the USB output also provides whatever the voltage is set to instead of always providing 5V, so not surprised.
where should I connect the 5v from this power supply to an arduino uno?
I don't think you usually connect the 5V supply to an arduino. Just the grounds.
How much current can breadboard/jumper wires handle?
I don't know for sure.
How can I always output 5v? Whenever I hook IC's to the pins below it gets reduced to 3.3v
If it is 5V with no load, but drops to a lower voltage with a load, then I suspect that you are drawing too much current from the module. The modules also get damaged easily, I bought about a dozen of them when I was using them a lot.
Can i use 12v 2amp to power up the board?? Through barrel jack?
I'd look up the specs when buying them,, but I don't think you want to use more than 9V with any of these breadboard power supplies. And I think they all get fried if they have to provide more than about 500mA of current.
@@Electronzap how many amps did u used on ur video?
If you put the jumpers to the OFF position, what does that do? Does it give you full 9V's of power?!
Haven't used one of these in a long time, especially testing it in the off position, but I am pretty sure that the off position disconnects power to the positive rail, and I am guessing that the negative rail is still connected to the power supply.
how do you shortcircuit them?
Connecting positive directly to negative.
Which resistor did you use?
need> 360 ohm since the red led is 2v 0.02amp.
new sub I will checkout a few more of your videos :)
Glad to hear, thanks!
How can I get 9v output from the module?
You can't.
Can i ask, does the power module have a specified polarity? (Im a beginner lol)
You use a standard barrel jack power source to power the breadboard, they typically come center positive and 9 volts works well. Then the modules are made where the left side of each rail is positive while the right side of each rail is negative, which is how most breadboards color code those slots. I can't think of any way to power a breadboard supply backwards unless you happen to come across one of the rarer center negative 9V supplies.
Got it, thanks for the help👍
@@Electronzap By the way, my 9v battery ran out and all i have is a plug in wall transformer with a variable polarity and voltage. The problem is the rated current. I have a module that needs 1A but my wall transformer outputs 1.2 Amps. Is it ok if i plug it in or its too much for the module?
What are those metal things (not LED's or resistors)?
I think you are referring to the jumper cables. They are wires covered in plastic.
@@Electronzap Oh okay thanks I just bought this starter kit and the cables I got are pretty long so it makes a mess and this looks a lot cleaner :)
I have a 12v power supply for the power supply module, will it work or fail?
12V works, but I fried some boards while using 12V. I think that's their absolute limit, and anything above that causes a voltage spike above 12V. Might have just been my boards though and how much current I was using. I can't speak for other people's experiences.
@@Electronzap I have one of these breadboard power modules and I tried a 12v to power it. I tested the output with an oscilloscope. I get 3.4v on one side and I get 10.0v from the 5v side. If I power it with USB only, I get 3.4v and 5v. I probably already fried something if it can't regulate the 12v input, but it was what I had on hand. Oh well.
what does it mean if the light blinks?
Probably not good. I'd make sure it's outputting the right voltage.
Does this still work if my breadboard doesn't have the other power and ground supplies?
like if I have only one rather than two power supplies?
Breadvoard power supplies power each rail separately, so you should have no problem powering just one. You want to set the jumper so there's no voltage on the side where the pins are floating to reduce the chance of a short circuit.
@@Electronzap Thanks alot!
Can it handle 10-12amps of current?
No, not even close. I think most of them have a maximum limit of 0.5A.
Aaah. Does the power module have to be charging through the barrel jack at all times? That sucks, but its a good kit. I ordered it.
Yeah it needs to be plugged in to use it. There's no battery.
Oh ok. Thanks for the heads up and the heart, i thought my module might be broken
Specification says that it can accept up to 12V not 9V you mention.
Can you help me? I want to connect a solar panel to it in order to get a usb charger. My solar panel outputs 24v. What should I do to use it?
There's cheap voltage buck converters with USB output. These units are likely to be fried around 500mA, and many USB devices these days need 2000mA (2 amps). You could just get a buck converter with barrel jack output if you still want to power these units with a high voltage solar panel.
@@Electronzap I found a solution - a $6 USB converter that could source over 3 amps if needed. It takes a 12v input, provided by a 12v regulator on the panel.
@@digitexstudios5634 good! Anything power related is best to just buy exactly what you need, unless you really want the learning experience of doing it DIY.
@@Electronzap Well, i don’t actually have a soldering iron yet. Still setting up shop. So anything is done by crimping and heat shrink or on a breadboard.
@@Electronzap People say there’s no such thing as free energy... But solar sure seems free!
Precieate this vid my guy
Thanks for watching!
1) I would call it s buck converter because the barrel jack is technically the power supply 2) how much amperage were you providing to it? Maybe the amperage was too low to keep a stable voltage. 🤷♂️
(Good) converters don't waste much power whereas regulators always do. Converters store some power from a power supply, and then rapidly releases it at either a higher or lower voltage. There's some losses but you get almost all the same power in as you get out with converters. For example, if your load gets 5V 1A (5W) of power, then the power supply might be providing a little more than 10V 0.5A (5W) of power with a converter. It converts voltage into more current, or current into more voltage. Regulators just make it harder for current to flow in order to turn extra power supply voltage into waste heat so that the load gets a lower voltage. To power a 5V 1A (5W) load, a power supply might be delivering 10V 1A (10W) of power to the regulator. If you could find a 10V battery to power the examples above, then the battery is going to die about twice as quickly with a regulator than a converter.
can we connect 5v and 3.3v or 5v and 5v to make it 8.3v or 10v??
No, this module is absorbing power from a single supply to get lower voltages. You need special circuitry to get a higher voltage from a single source.
what if i tried?? will the module be damage??
@@ralph-ralphdeguzman6091 connecting any positive to that board, directly to any negative on that board is a short circuit. I accidently short circuited them before, and after a few times they were fried for good. It won't power anything else while short circuited, so even if it protects itself and doesn't fry, there's no point doing so.
Thank you for the information.. then i wont try it.. so i can use it any longer..
What's the name of power supply being used in this video
I don't think they have a specific name. I just see them being called something like breadboard power supply module.
@@Electronzap I meant the thing used to power the breadboard power supply module
personally I have the same and I don't understand why I always have 10V no matter where I place the jumper except on off. Maybe it's because I'm using a 12V 3A power supply?
It's been a while, I don't use them much anymore, but I think I fried most of mine while powering them with 12V. I decided to only use 9V.
It can be output of 9v?
No, these are meant to reduce the voltage to the breadboard from about 9V to either 5V or 3.3V.
@@Electronzap How to make it reliable, some circuit need at least 9v in order to work well
What exactly is the function of the USB port?
It has very little use IMO. It only outputs 5 volt to a device you connect to it. In theory if you are bread boarding a USB HOST controller then it could be used for that, but who design HOST devices, 99% of hobbyist will be bread boarding UBS DEVICEs and for that you need DEVICE connector. Mind blowing short sighted.
I just got one if these in the mail, mine didn’t come with any alligator clips or female connectors
Yeah, they don't usually come with anything else.
My PS says 7-12vdc input. I run it at 12
When i plug in the 9v and turn it on the light on it does not turn on does anyone know why
same, but I've used the wrong polatity, not shure if I have fried it yet
Could u list some reliable bread boards? I don't have a lot of money to give away
Oh sorry I misread in my earlier reply, you can easily find breadboards for somewhere around a dollar or 2 each on Amazon and Ebay. Can easily get them in kits with other components you want. The cheap breadboards are plenty fine if you aren't going to use them all the time. I don't have any more info on if boards are high quality or not than anyone else, I just go by price and reviews. The ones with metal backings tend to hold up well when used a lot.
What if my power supply doesnt light up? I cant get mine to work
It might be fried. I fried some when I was using 12V to power the module, and when I short circuited them a few times. That was a while ago though, so I don't remember much. I bought about 15 of them to replace ones that I fried.
Ah, I have been hitting it with 12v wondering why it wasnt working lol
Can i make circuit it's input 220 volts please ??
This module can only handle 9V DC.
@@Electronzap Thank you and have a nice day 👍
just attach i5 to the 220 volt line bro.
Max current 700 mA.
Good point! I think I've seen either 700mA or 500mA back in the day.
Can you explain exactly what a "breadboard" is and why so many You Tube videos refer to them? I've never seen one in a real world device and they're useless for training since it hides all the important things that a student needs to see. What is the purpose of these things?
I fried a board, replacing it or building it I cannot 😮