T7 Component Tester: Review, Demo, and Tear Down
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- čas přidán 24. 07. 2024
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When mine got damaged (unexpected gravity attack) I immediately bought a replacement.
They really are useful little things.
Haha, "unexpected gravity attack". That's a good one!
Yep, They are excellent tools. I use mine all the time. The guy who invented it was a genius. One other tool I recommend is a cheap Logic IC tester. Makes it much easier to troubleshoot boards.
Great video, and yes a great little tool. I have this particular one as well as the cheapy version. Both work well. Thanks!
I purchased number of these units. The are handy as ell for many task. The freq counter and signal generator in one of them is great.
When you get the case off it it looks identical to the kit they sell on ebay. What a nice looking board!
Mine should arrive today!😀
I use the BSIDE ESR02 PRO Transistor Tester SMD. It helps testing smd components. Very useful to have.
Thanks for the video, well produced as always. I'm sure by now, you have found that the red LED in the bag is for testing and demo. Mine had a capacitor included for testing and demo too. I thought the 3 metal pins were spares but... they turn out to be for calibrating. Put one pin in 1,2 and 3, hit the yellow button and it automatically calibrates. Cool, huh?! 👍😃
Interesting tester. Thanks for the review Paul. ☮
I have had one for a year now, great for disabled parts from old tech
Got one. It is a great tool when doing inventory updates. You do remember inventory control? 😁
I just followed your link to buy another one. The funny thing is that I have three more versions, from the first monochrome that came out, a curve tracer, two scopes with built in component tester, a totem of test equipment and a platoon of handhelds that can test everything an electron can pass through.
Either way, it's not only useful, it's also an interesting toy.
...I think I lost control of my addictions.
You and me both brother
Couple of comments.
1. Best Dogly action yet. Keep them coming please.
2. I have been using this one it was a kit. And I know that you like kits. Mine has a black case that I prefer but the clear one is nice too. Just don't drop it in water. It will die. Don't ask me how I know this. It is available on Amazon.
GM328 Transistor Tester Frequency Tester PWM Square Wave LCR Meter Voltmeter Full Color Screen Graphics DIY Kit with Acrylic Case
9:41 and that ic on the left could be EEPROM but judging by an inductor nearby the ic, it could the famous buck converter ic MP1584.
The 3-pinned prong is for calibration, although I find it better to do this with wires.
The pins are supplied are a test plug to do the calibration. Put them in (do not separate them) to connect 1, 2 and 3 on the socket together then press start. The device will go into self-test mode. Follow the on-screen prompt to remove the test plug.
it measured the 18V zener, so it look like there is a boost converter being formed with the inductor/transformer.
A transformer doesn't surprise me. It identified an 18V zener. That means it needs to be able to generate at least 18V to measure the breakdown voltage.
That stupid thing generate 42V
Just put a diode Anode To pin 1 and see the magic
Extremely versatile tool, especially if trying to organize a bunch of loose electronic components!
8:23 charging built into it? i think it's the battery protection for the battery. maybe the charging circuit i.e a buck converter for the battery is on the main pcb which explains the transformer like inductor on the pcb.
the LED the small cap & the 3 pin thing is for calibrating it if it needs to be calibrated. i had the Danui version of this one. blow it up by mistake with a non discharged cap. . felts like crying. have the one the has a square wave out put and duty cycle on it too. its named after the main chip on them. but show of sent off for a new chip of Danui when i "KILLED" it all that time back.
I found out that it is wise to discharge the capacitor first too.
Hey! I have that T7 Tester..... I like it, some day I'll get the Atlas..
I have a newer one and the inductor isn’t present. The board is a dark blue on mine so a newer revision. I replaced the dinky lithium cell with a 2400 mAh mammoth. Had to remove the connector and solder the wires directly to the board, otherwise it fit just fine and charges great. USB Doctor says 5V 630 mA going into the microUSB.
Hello, could you tell me the inscription of the diode "D3", mine is burnt out and illegible, and what equivalent can I replace it with? thanks in advance
Have one of those and love it
How are you doing?
9:03... My bet is that is a step-up transformer since some component tests seem to be well above the 3.7V DC the battery supplies. I assume anyway. ;) I just got one of these testers for basic use (T7-H)... not expecting it to be super accurate... but still useful.
nice review. thanks 👍
Yeah... But you leave it for a week or so and it is dead; the battery is discharged since it has a standby current. So on mine I put a little toggle switch on it to disconnect the battery. Now it stays charged almost forever, also it is not very accurate for testing capacitors and inductors and the range is limited. However, I tend to use it often to just test if a component is functional or to check transistor pinouts.
Hé can it also test the leakage of pnp transistors ?
Hi, nice video! : ) I have this tester, but its not working... its always showing "Zener with diagram" ... but do you know if I can connect this display with Arduino?
You have a great personality.
Thanks
I'm pretty sure it was a 324p since it had 44 pins compared to the 32 pins on the 328p chips that I see. Also, I bought a LCR-T7-H and I have a 328p which is supposed to be worse than the 324p in both power and capability, but the T7-H is supposed to be an upgrade over the T-7 so I think I also may have gotten scammed.
I have one of these but it's called a TC1. I have a few different ones but this is my favourite although I had to install a proper on/off toggle switch as the battery was always flat when I wanted to use it. Even the IR code reader helped me diagnose an intermittent incorrect code being sent by a remote control.
Maybe I need to install a toggle switch on mine also.
Does anyone know the pin out/id of the display?
I have that same tester. The battery goes flat if not used in awhile.
Wow now they even have IR testing ! Could be useful if your tv remote stops working or you need to find the protocol of an unknown remote .
this T7 tester have some problem with hanging. Then you need to unplug the lipo and wait for 2 minutes and plug it in. It happens about 3 times a year.
The only thing i'm interested in is VBE wonder how accurate that is.
You make a video lesson on how to make an IR detector circuit that shows the data code using a breadboard and parts
I did 3 years ago
Nice tool.
Thank u SIR
I just got the same device. But whenever I measure inductor it recognize it as a resistor and shows some irrelevant value. Would you please help me? how can I fix it?
same with My problem, but T7 of mine is detect Dioda Zener always, have you try calibrated?.from the seller he suggest to replace 6 pins chip/IC, but this IC still undrer shipping, maybe will come after one month.
Just wondering if this tester could be used when there is no labeling or model number on a component and you want to find out the specs. Thanks!
Yes, to an extent. It won't tell you the exact model number. But it will give you all the specs.
@@learnelectronics thanks so much for the quick reply!
Geez. I bought one. Used it a few times. 2 days later I calibrated it, now all it shows it a blank screen.
Go Navy!
What number of main ic?
Main IC if T7 is from Atmega328P if im not wrong.
Nice people say hi back to dogly🖐️
Will this test an inductor
yes!
I have one dor test zener diodes only.
My primary component tester is the Peak Atlas DCA75 Pro, is much better in any posible way, the bad thing is the price Us$175 dollars.
Best Regards.
👍
Just got in the mail identical meter I did calibrating it now every time I try to read a component all that comes up is zener diode any ideas
thanks in advance...
same with My problem, from the seller he suggest to replace 6 pins chip/IC, but this IC still undrer shipping, maybe will come after one month.
How much is this T7
amzn.to/3N4dgQT
I think they're getting worse. I bought one last year and it works fine. So then I decided to buy another one for my other tool kit a few days ago and it doesn't even work the same exact way at all. In fact when you try to turn it off all it does is change the stupid language. From English to Chinese. Whereas the first one I was able to shut it off by pressing the button for a couple seconds. Also the first one did use the IR detector. The second one this new one, doesn't work at all and I paid more for the second one piece of shit is what it is how can you trust it if they keep changing the firmware?
Same thing happened to me. My IR detector seems to work though. Do you know how to change it back to English?
AMAYZEN
1:34 - TEXTOOL sockets > TFXTOOL sockets. Those rascally Chinese. 🤣
😀👏👍👍👍
🐕💞👑🏅👍
Very easy to blow up 😑💦
Inputs are not protected
Doesn't test the parts for good or bad. Just tells you what the part is. Useless in my book. I have testers that tell me the problem if so of a component working on board or on the table..these are for beginners...have fun learning children...
Here is a link to the original repository (see downloads): www.mikrocontroller.net/articles/AVR_Transistortester
There a many different versions of this tester, but in the end they are all based on this software made by a German guy. I got the first one a few years ago and managed to update it to the latest version. I have a few of them now and use them all the time.
i built mine using an arduino nano, a 0.9 inch oled using code from that repository