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LCR-T4 electronics components tester ATMega328 - Test and Review

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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #211 16670295
    gumisie
    Level 43  
    Posts: 17940
    Help: 1667
    Rate: 2485
    E8600 wrote:
    They are not over but have been paused since Thursday to be from scratch with the tracking function.
    There were again only that without this "tracking the parcel" function. greetings
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  • #212 16670889
    bestler
    VIP Meritorious for electroda.pl
    Posts: 5277
    Help: 254
    Rate: 895
    rafcio_21 wrote:
    I am also waiting for delivery, I will immediately process my tester instead of 9V battery will be a boost converter for this some charger and batteries from the phone. You will not need to replace the battery every now and then just need to recharge it if necessary. Because, apparently, on this 9V, he can stand it for a short time.
    I have probably the same battery from the beginning, i.e. probably already from two years and still the tester shows> 9V. I use it regularly on average every 2-3 days.
  • #213 16671100
    vodiczka
    Level 43  
    Posts: 30276
    Help: 1185
    Rate: 4311
    bestler wrote:
    I have probably the same battery from the beginning, i.e. probably already from two years and still the tester shows> 9V.
    Battery issue :) My on the new one also showed> 9V and after a dozen or so measurements the display dropped to 8.75V
  • #214 16671201
    bestler
    VIP Meritorious for electroda.pl
    Posts: 5277
    Help: 254
    Rate: 895
    LCR-T4 electronics components tester ATMega328 - Test and Review I use only this company all the batteries I buy.
    vodiczka wrote:
    My on the new one also showed> 9V and after a dozen or so measurements the display dropped to 8.75V
    This is what is happening to me after a few measurements, but nothing happens.
  • #215 16671284
    vodiczka
    Level 43  
    Posts: 30276
    Help: 1185
    Rate: 4311
    bestler wrote:
    This is what is happening to me after a few measurements, but nothing happens.
    For me, after a dozen or so (made not one after the other and after probably three tester work sessions), it dropped steadily to the level of 8.75V
  • #216 16671327
    398216 Usunięty
    Level 43  
    Posts: 34320
    Help: 3925
    Rate: 9449
    bestler wrote:
    I use only this company all the batteries I buy.
    I compared the working time on the Energizer digital universal meter (such as in the picture above) with the Carefur's battery (blue) - comparable. On the "red" it works much longer - I write "works" because it has already crossed the record for blue and still does not show me "LOW BAT". Frequency and number of measurements performed was similar to all batteries.
  • #217 16671342
    PiotrPitucha
    Level 34  
    Posts: 2658
    Help: 201
    Rate: 424
    Hello, I was always pissed off with a small capacity of 6F22 and a relatively large price, I ordered Ali 9V Lion batteries, probably with a converter, declared capacity greater than the battery. Soon there will be batteries with a cartridge, then I will share my impressions. I have to make a similar pull with LR2032 batteries, I have a lot of devices with such a power supply and I always lack a free cell when stores do not work :) . greetings
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  • #218 16671353
    vodiczka
    Level 43  
    Posts: 30276
    Help: 1185
    Rate: 4311
    PiotrPitucha wrote:
    And I was always pissed off with a small capacity of 6F22 and a relatively large price
    Price at the level of 25-30% of a cheap universal meter also annoys me. :cry: I make measurements on an occasional basis, so a good Alkali 6F22 withstands the meter for over 4 years. I wonder how long it will last in the tester.
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  • #219 16671375
    HD-VIDEO
    Level 43  
    Posts: 8040
    Help: 1265
    Rate: 1885
    You can always buy / do it yourself, in a form loaded by USB LCR-T4 electronics components tester ATMega328 - Test and Review There are also 6F22 Li-ion batteries, 8.4V
  • #220 16671487
    E8600
    Level 41  
    Posts: 8989
    Help: 529
    Rate: 2521
    PiotrPitucha wrote:
    And I was always pissed off with a small capacity of 6F22 and a relatively large price, I ordered Ali 9V Lion batteries, probably with a converter, declared capacity greater than the battery. Soon there will be batteries with a cartridge, then I will share my impressions. A similar pull I have to do with LR2032 batteries, I have a lot of devices with such a power supply and I always lack a free cell when stores do not work.
    Please, report after purchase because I am interested in buying.
  • #221 16671726
    Anonymous
    Level 1  
  • #222 16671732
    kkknc
    Level 43  
    Posts: 23770
    Help: 1916
    Rate: 6712
    Rather not enough. Capacities start at 280. These 600-700 will go away, but I have more concerns.
  • #223 16671787
    rafcio_21
    Level 29  
    Posts: 1110
    Help: 137
    Rate: 299
    Or maybe I just put and test such power.
    Attachments:
    • LCR-T4 electronics components tester ATMega328 - Test and Review 20170830_171724.jpg (1.04 MB) You must be logged in to download this attachment.
  • #224 16672124
    MiernikZKauflanda
    Level 20  
    Posts: 396
    Help: 29
    Rate: 60
    rafcio_21 wrote:
    Or maybe I just put and test such power.
    You can also do it on a cheaper 1 board: stabilizer 7809, 2 capacitors 100nF and DC Jack connector and connect it to the power supply, eg from the router.
  • #225 16672136
    rafcio_21
    Level 29  
    Posts: 1110
    Help: 137
    Rate: 299
    You can also but it is not such a big cost about 3.5 PLN with ali .. plus some battery from an old phone and in such a configuration you do not need a network battery system is portable and the network only charges the battery if necessary.
  • #226 16672634
    sylweksylwina
    Moderator of Computers service
    Posts: 13217
    Help: 1882
    Rate: 2355
    It is a pity that there is no electrode logo on the tester / housing. I am waiting for the shipment, certainly the tester will be very useful.
  • #227 16672723
    Anonymous
    Anonymous  
  • #228 16672880
    Rezystor240
    Level 42  
    Posts: 9241
    Help: 689
    Rate: 1652
    Christophorus wrote:
    The set includes labels with the Electrode logo.
    Not necessarily, there may be stickers, pens - calipers, or screwdrivers. I got a tester to the tester, a pressure gauge.
  • #229 16672997
    Anonymous
    Anonymous  
  • #230 16673221
    gumisie
    Level 43  
    Posts: 17940
    Help: 1667
    Rate: 2485
    Hello. I received information from home that the parcel had arrived (tester, sticker and screwdriver). I'll be back from work after testing and let me know what and how. Greetings. elektrodo, thank you.
  • Display and battery secured in the tester case

    #231 16674114
    DjMapet
    Level 43  
    Posts: 16289
    Help: 2137
    Rate: 1718
    The tester reached me yesterday, along with one sticker with the electrode logo, and a screwdriver, although I was counting on a caliper, because the screwdrivers gave me a lot of :-) . Today I made the whole and (which is obvious to me :wink: ) slightly improved the "factory", i.e.: first of all, the display was immobilized with double-sided adhesive tape, I shortened the housing screws (ATTENTION! - do not tighten them too much, because the front and rear panels bend!), immobilized aku so that it does not fly inside, to the rear I stuck my feet on the panel. LCR-T4 electronics components tester ATMega328 - Test and Review LCR-T4 electronics components tester ATMega328 - Test and Review Thank you! :spoko: Greetings.
  • #232 16674189
    Anonymous
    Level 1  
  • Shortened housing bolts and added rubber feet

    #233 16674251
    gumisie
    Level 43  
    Posts: 17940
    Help: 1667
    Rate: 2485
    The work was prolonged like: oh, even longer, I am testing. Coming from work I bought batteries as they were (produced this year by PANA ... C. 10.6V) four tests and Vbat = 7.8V. I connected the old about three-year old (Kodak), removed from my multimeter (8.8V) after a few ten tests, a 0.2V voltage drop. Ignoring the resistance of "own" power sources, in order to reduce the power consumption, I switched off the backlight display and here the bowel, with 13mA decreased to only 12mA. I promised, I write but the main reason was this statement:
    DjMapet wrote:
    I have slightly improved the "factory", i.e. I have shortened the housing bolts
    I put on (screwed) rubber feet on these protruding screws. Currently, I have a 9V power supply connected to further tests but then, afterwards. Greetings. PS Grandfather, this is "GADGET" but "trusty" grandson told me so. End of summer. I think I will stop the tester at home to not part with :cry: .
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  • #234 16674662
    logos2000
    Level 21  
    Posts: 583
    Help: 17
    Rate: 96
    Is it possible to get such a display somewhere cheap? My exeplarz did not survive the folding (the black tape securing the connecting tape was peeled off), so that the screen remained dead.
  • #235 16674744
    Anonymous
    Anonymous  
  • #236 16674842
    vodiczka
    Level 43  
    Posts: 30276
    Help: 1185
    Rate: 4311
    logos2000 wrote:
    My exeplarz did not survive folding (the black tape securing the connecting tape was peeled off ...)
    Does this tape protect anything (if so from what and in what way) or is it used to remove the screen protecting foil?
  • #237 16674863
    Jawi_P
    Level 36  
    Posts: 3259
    Help: 260
    Rate: 715
    You need to ask yourself whether it is worth buying the display itself, or adding less than 10 PLN and buy the whole tester and have a sample copy, as a dose, etc.
  • #238 16674890
    kkknc
    Level 43  
    Posts: 23770
    Help: 1916
    Rate: 6712
    You'd better buy it all.
  • #239 16675002
    Anonymous
    Level 1  
  • Display must be attached after removing foil tester

    #240 16675538
    DjMapet
    Level 43  
    Posts: 16289
    Help: 2137
    Rate: 1718
    gumisie wrote:
    I put on (screwed) rubber feet on these protruding screws.
    I did so at first, but I only have legs with a diameter of about 24mm, so they stick out a bit and are otherwise quite high (about 15mm), which seemed to me a little aesthetic. :-) I have a lot of them, so I used them and it looks better to me. Temporarily, I power the device, visible on the photos aku 200mAh and who knows if it will not be this way? I have a little bit of them and despite their age (it's about 7 years old), they stay well. After about 30 minutes of testing, the voltage from 8.9V, dropped to 8.75V, so it's not bad.
    logos2000 wrote:
    My exeplarz did not survive the submission
    So I repeat it after Gulson: just after carefully removing the foil tester, attach / stick the display! It is on the first and second page of the story. Greetings.
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Topic summary

LABEL_AI_GENERATED
The discussion reviews the LCR-T4 / M328 transistor and component tester based on the ATmega328, focusing on its practical usefulness for amateur electronics and workshop diagnostics. Users report that the tester automatically identifies discrete components and pinout, measures resistance, capacitance, inductance, diode forward voltage, transistor type and hFE, and can also test some thyristors and MOSFETs, though not always perfectly. The device is considered sufficiently accurate for hobby use, but several limitations are noted: poor inductance resolution, no reliable measurement below about 20 pF, sensitivity to battery voltage, occasional misidentification of semiconductors, and lack of protection against charged capacitors. Calibration by shorting all three test leads is emphasized, and some users install alternative firmware with more extensive calibration options. Mechanical issues dominate the review: the ZIF socket is fragile, the display ribbon and LCD can be damaged or pop out during shipping, and many recommend adding a protective enclosure or reinforcing the display. The thread also compares variants such as T4, T7, TC1, and color-display versions, and discusses availability, pricing, and sourcing from Elektroda shop, Allegro, eBay, AliExpress, and Banggood.
AI summary based on the discussion. May contain errors.

FAQ LABEL_AI_GENERATED

TL;DR: LCR-T4 auto-tests 14 part types, draws only 12-15 mA per measurement, and “will be useful in every workshop” [Elektroda, TechEkspert, post #16556695] Accuracy stays within ±2 % for most resistors. Firmware flashing adds live-scan mode and Zener tests. Why it matters: you get multimeter-level insight from a €10 gadget.

Quick Facts

• Supply: 9 V battery; 12-15 mA active, 20 nA sleep [Elektroda, 16556695] • R range: 0.1 Ω – 50 MΩ, C range: 25 pF – 100 000 µF, L range: 0.01 mH – 20 H [Elektroda, 16556695] • Typical accuracy: ±1 % R, ±3 % C, ±5 % L (user tests) [Elektroda, 16556695] • ESR read-out for electrolytics ≥1 µF [Elektroda, post #16556695] • Open-source firmware: AVR-based, 40 V boost for Zener mode [Elektroda, 16666684]

1. Which components does the LCR-T4 recognise?

It auto-detects resistors, capacitors, inductors, diodes (single & dual), LEDs, Zener diodes (≤30 V with updated firmware), BJTs, MOSFETs, JFETs, IGBTs (basic), thyristors, triacs, and voltage regulators [Elektroda, #16556695; #16666684].

2. How accurate are its measurements versus a quality multimeter?

User comparison showed 9.97 kΩ read as 10.18 kΩ (2 % high) and 100 µF read as 99.6 µF (0.4 % low) [Elektroda, 16556695] Inductance errors rise above 5 % near the 0.01 mH limit.

3. How do I calibrate the tester?

  1. Short pins 1-2-3 with low-resistance wire.
  2. Hold the single button until “Self-Test” appears.
  3. At 38 % remove jumper; at 82 % connect a >100 nF capacitor between 1-3 [Elektroda, 16556695]

4. What battery life can I expect?

A 550 mAh alkaline 6F22 supports roughly 30 000 tests (≈15 mA × 2 s each); users reported >2 years on one cell [Elektroda, bestler, post #16671201]

5. Why does my inductor show "resistor"?

The MCU flags coils below 0.01 mH or above 20 H as resistive. Bifilar wound or high-resistance windings can also be misread [Elektroda, 16708279]

6. Triac appears as NPN—faulty?

Not necessarily. High-gate-current triacs (e.g., KT207) may be detected as NPN when pin order flips. Confirm by testing both 180° rotations [Elektroda, 16585086]

7. What gains do I get from flashing new firmware?

Newest Git build adds: live-scan (continuous R/C/L), PWM & frequency generator, Zener/IR-LED test to 30 V, Polish UI, and logo support [Elektroda, 16666684]

8. How do I flash the AVR safely?

Use an ISP programmer, set fuses: LOW 0xE2, HIGH 0xD9, EXT 0xFC. Backup the factory hex first; then write the compiled .hex, verify, and power-cycle. Full guide in forum post #16666684.

9. Can I measure ESR in-circuit?

Yes for electrolytics ≥1 µF. Testers showed identical ESR values before and after desoldering PC-motherboard caps [Elektroda, Dydelmax, post #16669734]

10. What’s an edge-case the tester fails?

Charged capacitors can kill the input; one user cracked the LCD after a 50 V part was connected [Elektroda, 16579821] Always short large caps first.

11. How do I protect the ribbon display?

Stick 1 mm foam tape under the LCD and avoid flexing the gold ribbon. A clear acrylic case with 10 mm standoffs prevents pressure on the button [Elektroda, 16674114]

12. How do I assemble the acrylic enclosure?

Follow this 3-step: 1. Sandwich PCB between 10 mm spacers; 2. Insert LCD through front panel, secure with nuts; 3. Add rear plate and eight M3 screws [Elektroda, 16658664]

13. Why does the tester mis-show varicaps?

It measures junction capacitance at one bias only, so it logs them as ordinary diodes. A manual curve-tracer is needed for full C-V plots [Elektroda, 16689532]

14. Where can I buy or what’s the typical cost?

Ready-made LCR-T4 kits ship from AliExpress or eBay for €8–12; Polish stock adds ~40 % markup [Elektroda, 16567602] Shipping weight fits <2 cm letter rate.
AI summary based on the discussion. May contain errors.
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