Using an MB-102 Breadboard Power Supply Module

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The MB-102 breadboard power supply module is a cheap and convenient way to provide either 3.3V or 5V for your breadboard projects.
The module requires a DC supply voltage of between 6.5V and 12V, which can be provided via a 2.1 mm barrel connector.
By using the various pins on the module and the USB output port, up to seven circuits can be powered directly from the module at the same time.

Опубликовано:

20 окт 2024

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Комментарии : 22

@stephenfoster7257 4 месяца назад

I recently purchased a miscellaneous pack of components, which included a breadboard and the board shown here. There were no instructions with the pack, and this video has shown me all I needed to know.

@SteveH-TN 29 дней назад

Appreciate you sharing this video as I haven’t used this type of P.S. in nearly a year. Especially enjoyed your demonstration at end of the video. De AA4SH

@saffiervanderhoef2547 9 месяцев назад

Thank you very much. I needed to know how to power it and you have provided me the info :) have a good day

@QeloGOTY 2 дня назад

Can I also plug it into the socket with a plug and then plug it into the MB102 with the USB-C?

@cynodont7391 Год назад

In the MB-102 schematics, the USB power line is connected after the 5V regulator (but before the 3.3V regulator). So when this module is powered from the USB port, all "5V" voltage pins have the actual USB voltage. In your example with a 9V battery connected to USB, the breadboard probably gets 9V.

@quickstartworkbook1532 Год назад

Have you measured the voltage with a multimeter? Next time I'm back in my lab I'll take a few measurements myself to see what I get. Cheers, John

@cynodont7391 Год назад

@@quickstartworkbook1532 I did not test yet! I received 2 MB-102 last week but they are already dead. The first because I accidentally shorted the 3.3V output (bad idea) and the second started smoking after about 1 hour while doing almost nothing. That was probably a defective one (or a problem with my 12V old DC power supply?). In both cases, I measured that the 3.3V rail was getting around 10V (from 12V DC). I was quick to react and my raspberry pi pico seems fine. Anyways, I ordered a few more with a 9V DC power supply.

@quickstartworkbook1532 Год назад

@@cynodont7391 I have heard of similar problems with MB-102 PSUs, whereby the voltage supplied to the rails is more than it should be. I think the quality of the product can vary quite a bit.

@cynodont7391 Год назад

@@quickstartworkbook1532 Well, that was 10V after the failure. For my next batch, I will let them run a few hours with a few leds and resistors before I connect my precious RPI pico.

@Aengus42 Год назад

@@quickstartworkbook1532It's madness because a simple jig at each packing station would let them test it pdq! Akin to how they used to test incandescent bulbs. (Damn! I felt old typing that last sentence!😆)

@anuragnayak324 10 месяцев назад

This breadboard power supply can supply very less current. If we draw higher current then the SMD resistors on the module gets heated up. You can check...

@IceColdProfessional 7 месяцев назад

How can I get 9V's out of this bad boy?

@Orcanian66 2 месяца назад

Great video Thanks for sharing.

@galagatron5319 Год назад

HI. Can this thing power a 16 channel servo driver on one side and a nano on the other? Trying to find a way to power about 3 or 4 micro servers using the pca9685 which requires its own power supply and a nano which as you know needs its own also. Trying to make a project i can put together that can just be plugged in with one cord. Thank you.

@quickstartworkbook1532 Год назад

That's an interesting question. In theory, I would say yes. Why not give it a go.

@nsfeliz7825 9 месяцев назад

read the datasheet for the reg1ulator.

@kruskotv1311 Год назад

2:00 with this barrel jack, is the center positive or negative ?

@quickstartworkbook1532 Год назад

The positive terminal is in the centre of the jack. The outside casing is negative.

@kruskotv1311 Год назад

@@quickstartworkbook1532 Gracias friend :)

@Aengus42 Год назад

Thanks, just got mine this morning. Bent pins all over the place out of the box! I think customer services need a few photos tbh! Subscribed! 😎 It's a shame you don't use your own voice. Unless you don't speak English and use Google translate for your scripts. Or maybe you have problems with your voice? (I have no legs below the knee so I know how it is!) Keep safe mate 😀