'First off, I desoldered the pesky LiPo connector.' That's my man.

@miniwarrior7

7 жыл бұрын

Enrico Rovere 😂 I bought a bag of them connectors

@UpLateGeek

7 жыл бұрын

Careful with these modules, mine came with the wrong polarity connector!

why don't you ask some of your audience who are native chinese speaker when you have to read some chinese datasheet?i'm from Hong Kong,and i'm willing to help you

@ciarfah

7 жыл бұрын

tutorial arduino Commenting so he hopefully sees this

@josedourado3747

7 жыл бұрын

tutorial arduino maybe you can ask the manufacturers why they lie about the specs of this board....

@Hackvlog

7 жыл бұрын

Can't agree more with Srigi. Google Translate app is an invaluable tool and a must-have app for anyone working with Chinese components.

@jort93z

7 жыл бұрын

also its sometimes hillarious if you read it out loud what google translate spits out.

@mopication

7 жыл бұрын

If you have chrome, you can also install project naphta, which can translate text in images (if you have an image, of course. unfortunately it doesnt work with pdfs). If you have a pdf, you can upload it to google drive, open it with google docs and translate it (tools>translate)

Thanks for showing us this board and testing it so well! I like the idea but will wait for better versions to come out that address the significant issues this one has.

This is brilliant. It's hard to keep up with all the new boards that are available, especially when they don't have proper documentation. More like this!!!

Thanks for the extensive testing. I was zoo lazy to do that. The missing protections are common for the tiny lipo protection circuits on the battery themselves. So there won't be a problem in the most cases. I rather keep the connector. It's a standard JST. You can crimp a counterpart to your battery and then it's easy to disconnect.. which will happen more often

I was waiting for your video today And luckily you uploaded one today.....

I like how you made the components de-solder themselves at the end

happiness is getting notification from Great scott

Really digging that rework technique at the end!

Me: Buys the module... "it charges the battery Yey!" GreatScott: "The output current is constant.... But once i lowered the input voltage to the nominal voltage..." Me: ......

Nice work, it would be neat to see the equivalent practical tests done on the $20 board, and see how accurate the advertised specs are.

Every time look at your so detail and focus project work ready impressed

Nice comparison !!! Good job there!!

Lol. I like how you got all bigclive on it at the end with 12v.

Thanks for this video. I've been looking for an economical way to power some basic LED switcher and seven segment displays for some integrated edge-lit acrylic signs. I hate the idea of cables running from a desk so this lipo+boost converter seems like it would be great.

Thanks for that. I was just looking at boost converters for just this purpose.

These videos are gold

There are lipo chargers built in battery case on ebay (USB Portable External Backup Battery Charger Power Bank For Phones) , they cost less than a 1$, and they have very nice charger and 5V booster , and both USB ports for charging and discharging. I often buy those and just take out that very small pcb with both ports. They working flawlessly. Maybe in next video I present those, you gave me idea, ty GreatScott . Thumbs up from me as usual.

Thanks very much for what you do . . . . .I am new to your channel and as I watched my first video I thought GREAT SCOTT this is wonderful stuff. . . . .

I love this kind of videos! Me and probably a lot of people in your audience buy this kind of cheap stuff from chinese sellers. I would really enjoy more of these tests. Keep it up! :D

I like the way you teach. 👍

My ultimate wish is to assist GreatScott on all his projects (want to learn so many things from this man)

You are very professional and i like your videos ... keep up the good work my friend

Nice work, I've got some of these in my projects, so it's good to know I should only use protected cells! And I agree, the Lipo connector is very pesky, being the wrong polarity! (At least on mine anyway, didn't notice whether yours was as well.)

Great video, really interesting as I just picked up one of these to look after a lipo powering an esp8266 but got utterly confused by the data sheet (lesson learnt there). I'd be really interested to hear your thoughts on over-discharge protection methods, chips and applications!

I'm impressed with your knowledge..! You know you're stuff inside out. Gettings from USA!

I have always thought there should be a cheaper alternative to PowerBoosts. This would be good for a little microcontroller project, which is exactly what I was looking for.

Thank you! You have helpt me a lot. Keep up the great videos.

Very useful, thank you! I recently touched these kinds of solutions (for portable DIY oscilloscopes projects), so , your tests - good to know! :) P.S.: that's one heck of a hot summer in Germany, judging by the end of this video... :D

More than 600.000 subs getting close to the 1.000.000!!

Notice that the chip itself is just a boost driver chip.. So, VOUT, is actually input pins (for sampling). For battery to VOUT(or SYS), there is not any protection. 1. This chip itself has overcurrent protection, but it's for the chip. If you short the SYS, it just like you are shorting the battery... 2. When the voltage is lower than setting (2.7v), it stops boost, and as the topology, it just connect battery to SYS directly. So their is no over-discharging protection. 3. Other protections are just cut off Vin at some conditions. 4. There is a circuit in datasheet comes with power path selection. This one you get is not suitable (but can, due to it have a diode connect from 5v in to Vsys) for charging and providing power at same time...

@FangfeiYang

7 жыл бұрын

Yes. First, I've never used this chip. So I'm just analysing these things by some facts that I know... It can be just the problem of this kind of IC, the manufacturer is cheating about the values... But consider that 700ma to 990ma(min) is too ridiculous, I think the poor PCB design maybe the main reason. According to the datasheet, the charging part is a Linear regulator (it's not buck reuse the coil, it's a linear regulator...) which do not have a good efficiency and release heat. (We are talking about a 5V to 4.xxV LDO... with 1A) The chip will limit the current by measure the temperature. (in case it goes too high) In the datasheet they have warned that a bad heat design can result in lower charging current. So they recommend to use the copper on the bottom side as the heat sink by connect the back metal part on the chip to the bottom GND layer through vias. From the picture of the product on the ebay, I can hardly see any via on bottom layer that connect chip ground to the bottom layer... (I can see a hole at 7:24 but I'm not sure if it's a via...) Not mention they run the gnd wire under the coil... As a comparison, you can look at the reference PCB design from the manufacturer www.tpwics.com/nd.jsp?id=24&_np=2_403

@FangfeiYang

7 жыл бұрын

- something wrong, removed -

@FangfeiYang

7 жыл бұрын

- something wrong, removed -

@FangfeiYang

7 жыл бұрын

I'm not talking about the wide of pcb trace... I can only find θja for this chip with no idea what the design is... But it would be affected by the design and diminish the current.. But I cannot say anymore about this unless I buy one of this board... Typical LDO like AMS1117 have a huge metal heatsink that almost as big as the battery chip itself... That's not the same story...

@FangfeiYang

7 жыл бұрын

145℃ is max junction temperature (in limit mode it's 120℃) and in the figure of "complete charging cycle (2:45)", datasheet says θja = 130℃/W. But I don't think with well thermal condition, θja would be so large... So either the value is wrong or it means some other condition...

The coolest video I’ve ever seen!

In the outro of this video I saw your quite interesting technique for desoldering SMD components. Looks much easier than fiddling with a soldering iron! ;-)

Thanks for sharing. Good to see the ops and downs. :-)

Your Vids ROCK!! THANKS BRO!!

Can you make a video on what parts you always or often keep at hand

@GreatScott! Nice video Scott! This though did not work for me for the following reasons: 1. output is not constant 5V, it is USB voltage - 0.2V. 2. without USB voltage, it gave 3.7V or the battery voltage as the output, without any boost. So, I'll go back to the first solution that you showed - boost circuit + batt charging circuit. Maybe I'll look to combine them as you showed in one of your other videos. Thank you for making these amazing videos! Gave me confidence to make my own LiPo powered projects :) (y)

Again grate video...grate scott....!

Great Greatscott

this is more practical, but if you need more power on the 5 volt line it is better to use a separated boost module

@greatscottlab

7 жыл бұрын

Definitely

@ItsJustMeMusic

6 жыл бұрын

DIYelectronics Agree with u

@ItsJustMeMusic

6 жыл бұрын

DIYelectronics and it's still 2 dollars to get both on ebay

@susomoraify

6 жыл бұрын

DIYelectronics Can you recommend a reliable one? I got one from Amazon but it's crap: an overshoot of almost 23 Volts for almost 1 second that fried my IC's....

Great video, thanks for sharing

You should used powerbanks modules, they are faily cheap, can provide around 500mA at the output of the boost converter and around 1A of charging current. And also they have the battery protection circuit. I have been using these circuits for a while and they work like a charm on all my portable proyects with LiPos and 18650 Li-Ion battery cells. Anyways, great video, as always

12V Auto desoldering feature included, nice :-)

Nice vid. I would like to see a similar circuit with auto-shutoff to protect LiPo battery from over charging cuz too often I forget to unplug them and ruin the battery. Not to mention the danger of over charging.

The charge current can be set by changing the resistor between pin3 and ground. But the output current is not setable. Over discharge protection maybe can add with an external mosfet. This chip is only used by cheap powerbanks.

thank you for this

Great test! Thanks! I wanted to buy this, but yet I will seach something else.

I have noticed many devices that need charging, due very poor when charge voltage is below 5v like 4.6. I would like to make a boost that can supply 5.5v 3A. I find most chargers are poorly regulated at 5v output. The regulated ones maintain 5.1 and really makes a difference in charge times. USB to Micro cables are a different story and vary greatly too.

Always great

Thank you for this video. Do that over voltage fry the D1 mini pro when unplugging the charger cable?

It would be good to see you experimenting with some higher power devices, ones that can source a larger current and what measures you might take to handle it.

Great info

Thank you for video. Can you create a portable laptop charger out of salvaged laptops batteries?

Looks like GreatScott developed a new desoldering technique called "overvoltage desoldering". Maybe I should try it some day.

Powerbanks posess this kind of circuit, but smaller. Just open one of them and you'll find a 10850 battery (LiPo/Li-ion) as a bonus, extract the circuit, it's really small and has USB-A output and micro USB input both 5 volts regulated (usually).

Great video, can you clarify your equation about how long the battery will last?

Maybe you could do a quick tutorial on how to reuse the batteries of old powerbanks with new charging circuits and such when the old are broken, because I still have 2 broken powerbanks laying around and don´t know what to do with them.

I love this channel..

@greatscottlab

7 жыл бұрын

Thank you :-)

Hi Have you ever thought of using small USB "Power Bank" circuits ? It's a great solution and it work perfectly for me ! Cheap, Small, With a screen or not, overcharge and discharge protect... (Depending on the circuit selected) In addition, they are very easy to find online or in a local store 🙂

Hello! Great vid! Curious what’s the minimum mAh lipo battery these boosters are able to still power a 5v sensor. I tried with a 120mAh and my sensor fades after a while. Thanks for your help!

Some TPA3116 amps .. those are usually riddled with problems .. the chips are awesome though

Man, You really did a Lot of work there. I was before something to recharge the Lipo,so You could simple use the Voltage balance on direct charger and output 3.7v to lipo,right? Thanks for the vídeo,i learned a Lot...

Great! Thank you very much for the video. I am testing this charger board as well. Question: What is the name of the adapter that you plug in at 0:07 timecode? The one that is 5.5mm concentric on one side, and socket with 2 screws on other. I could not find similar on aliexpress/ebay mostly because I can't find a name for this thing.

Good thing is that it is not difficult to find a LiPo with integrated short circuit/over discharge protection circuit. They are around 10 bucks in sparkfun/adafruit

Wow !!!! exactly what I was searching for. I was confused that Is adafruit's 1000C is worth of its value ? After seeing this it is clear now. Thanks for your time and efforts. Keep going.. Love from INDIA.

@greatscottlab

7 жыл бұрын

Thanks mate :-)

You are so brave

You should check one of those Regulated e-cigarette mods. Evic VTC Mini for example would be a great thing to test, I'd love to see what type of circuit they use to regulate temperature of the atomizer resistance. They have this thing called Temperature Control, and Voltage control, and even bypass mode which theoretically acts as if the mod is outputting the Voltage of the battery .

Will you make you own with all features?

I like your handwriting. 👍

Great video!

Hi, Thanks for videos, great tutorials. One Topic for Next tutorial if you have interest. You could show how to convert old in ear or on ear headphone as a buzzer for a project by sending signal as PWM via transistor from microcontroller or timer. I have many old headphones around, and use them for projects as signal interface where I can hear command confirmations. For example beep sound on button click.

I often use the tp4056 battery charger in combination with this exact same boost converter, the problem is if you use one with the protection circuit, let say your load is more than 5Watt the protection will activate and you could not power it. So I prefer to use the tp4056 without protection circuit. I just ad a battery level gauge with four led and comparator. But in most case the boost converter stop working before the battery is drained too low.

Hey Greatscott I would like to connect the output from the step up directly to a microcontroller, but I don't want to kill him. How can I protect the microcontroller? (Overvoltage as you explained in your Video) Thanks for this nice video

Another alternative would be buying one of these DIY battery charger boxes which basically come with the case, get the circuit, desolder the battery connection terminals and you are good to go :)

I like how in the end of the video you showed a clip of you taking the tested circuit board apart, made me laugh a little. And maybe make a DIY video on how to make a circuit like the one you were just testing? If you havent already. I havent exactly looked through your videos to find if its already been done. Lol

@greatscottlab

7 жыл бұрын

I have not made a DIY version of such a circuit.

@mickg8340

7 жыл бұрын

GreatScott! I think it would be interesting, as far as price comparison and how it works compared to the market brands

@mickg8340

7 жыл бұрын

Another idea, you could make a controller circuit for an AC motor, like the one you would pull from a box fan

Hi! I like your channel very much. I am interested to learn these things. Since I'm also new to electronics, I couldn't understand the part when u lowered the voltage at the input and saw a decrease in the boost voltage output. You said it could lead to over discharge of the battery. I couldn't understand it. can you explain?

I like your writinh And your work

need to see your diy power loger in a cabinet .

Just a thought... Have you tried testing the maximum output current with the battery? The Input impedance of the source (battery vs bench power supply) makes great difference in the performance of the boost converter especially under load. I'd bet, the battery handles the current spikes from the boost converter better than the output filter of the bench power supply you are using (and don't forget the current protection kicking in from time to time). At least you could try placing a big (>1000uF) low esr capacitor at the battery terminals when testing with PSU and add a series inductance between the capacitor and the PSU. Otherwise, great video. Thanks!

ty for uploading

Ha, your video starts using the same components as my latest video in which I crammed those two boards with a LiPo battery and a switch in the tin can of an old 9V battery. Thanks for another Interesting video! I have plenty of those charger and boost boards you show in the intro of your video. Good to see your test of this alternative. I measured the MT3608 board to take over one mA of quiescent current. Seeing this alternative board using so much less is a great feature,. Despite its shortcomings it may be quite useful in practice. Perhaps you can also test the very cheap combination (+/- 0,70 euro) of the TP charger board and that 5V boost converter with the female USB outlet?

I know you probably have a video on the testing set you have made up there. where could I find it. That looks like an interesting thing to make.

Excellent, in most cases the most common scenario is over discharge and with LiPo batteries going bellow 3v is not a joke, they puff, explode and burn. Would be too hard to add at least that protection?

Very useful!!

Do you think a Zener diode is suitable for leveling out that minor voltage spike when you hook up external power? Or should I use a voltage limiter IC instead?

MT3608 also has a high no load consumption so it may require a switch

Hi there!! the R330 is a resistor or inductor? in schematics it looks like a RC filter for the input voltage pin.

How about electronic basics about transformers Like flyback transformers, microwave transformers, and maybe even car ignition coils?

Does that battery include overcharge and overdischarge protection. I have a similar one (ableit 1200mAh), and according to its datasheet, it does.

If I added over-voltage spike protection and a capacitor to the output of the boost converter, could I use this board as a short term uninterruptible power supply for a low current 5v device?

Great video! Thank you for your time and saving us the time to test it ourselves. Keep up the great job.

@greatscottlab

7 жыл бұрын

Thanks mate :-)

Testing different circuits efficiencies charging lithium ion batteries from solar cells would be cool. TP5000 might be a good choice based on my own research. Hope this interests you.

Hey Great Scott, sorry I'm a bit late to comment to your video, but I've been trying to use 3.7V LI-PO battery to power my camera T3i which needs 7.4V to operate properly, after some digging I found out that I could use 2 boost converters to get to 7.4V required by the camera but I also learned that the capacity of the battery which is 5000mAh will drop significantly if I use such a combination (3.7v to 5V and then 5V to 7.4V), what do you think should I do, and do you think I can build a straight 3.7V to 7.4V charger and boost converter? thank you so much :)

he is so happy while saying good bye closing up the video and getting the board just so fucked up that smds unstick appart... sounds as an instant like for me lol

this guy is amazing :)

Those lipo batteries usually sold as eg "1500mAh Lipo li-Polymer ion Battery 3.7V for mobile phone Camera GPS PAD 504050" on ebay usually have discharge protection built in no?

Was there a minimum current draw requirement from the load? Like how some boost circuits require the load to draw over 140mA in order to stay on?

Hi. Could you please update us on how to add "Over-Discharge Battery Protection" and "Shortcircuit Protection on the $2 LiPo Charger & Boost Converter TP5410 ? Thanks.

never clicked on a notification so fast

+GreatScott! I've been wanting to get into circuit building but I have no idea on how to go about finding information. I'd like to learn how to think things out for myself instead of looking at pre-made diagrams of circuits (I'm currently looking into making unique guitar effects pedals for myself). Do you think you could possibly make a video dedicated to the math and explanation behind a few basic parallel and series circuits with multiple components? I'm sure a few others would benefit from it as well. *I'm also new to this channel :D