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๐Ÿ”Œ makerhawk um34c: usb 3.0 multimeter with bluetooth connectivity - voltmeter, ammeter, electronic load tester, resistor, capacity charger, temperature meter logo

๐Ÿ”Œ MakerHawk UM34C: USB 3.0 Multimeter with Bluetooth Connectivity - Voltmeter, Ammeter, Electronic Load Tester, Resistor, Capacity Charger, Temperature Meter Review

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Revainrating 3.5 out of 5ย ย 
Ratingย 
3.7
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Description of ๐Ÿ”Œ MakerHawk UM34C: USB 3.0 Multimeter with Bluetooth Connectivity - Voltmeter, Ammeter, Electronic Load Tester, Resistor, Capacity Charger, Temperature Meter

Um34c and um34 are all the same except for the Bluetooth function. Guide Video, UM34C User manual and Android APP download link can be viewed from the Product guides and documents at the bottom of the page. Note: 1. UM34C don't have PC software , only have APP for android. 2. There are some incompatibility problem between some android phone and our Bluetooth board. Please purchase carefully, such as NOTE8 / S8 3, for Android APP: A: APP only support android 5.0 and above. B: Allow APP to do in the background, not be cleaned. C: Allow APP self-starting. D: Allow APP stay after screen locked, not be cleaned. E: Type-c is just to measure, not support all Type-c quick charge, not trigger. LD25 4-bit led digital display tester have some Advantage: 1. Display upgrade; 2. Protection upgrade; 3. Interface upgrade; 4. Cooling upgrade; 5. Precision multi-turn potentiometer; 6. Intelligent temperature control fan. It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable. UM34C Android Phone APP Control. No need professional wiring, simply the operation, only need to download APP. Real detect charging status of USB power supply, voltage, current, capacity ,temperature and etc. other multi-function multi-data measurement display, high precision comparable professional equipment. At a glance, more convenient. Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!.

Reviews

Global ratings 6
  • 5
    4
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    2

Type of review

Revainrating 1 out of 5

Poorly soldered USB connectors

I liked that this USB meter comes with an electronic load with an NPN TIP122 and LM317 voltage regulator. What I didn't like was that the solder points on the load and meter were poorly soldered and had a post. Lots of flux residue. I want a replacement as soon as possible.

Pros
  • Great for outdoor activities
Cons
  • Cable is shorter than others

Revainrating 1 out of 5

crap, don't buy it.

Absolute bullshit. Bluetooth didn't work out of the box, I had to disassemble and reconnect the device. Then I got it to work intermittently. In some cases, the voltage readings differed by 35%. I realize this isn't a $500 USB power monitor, but damn it should at least be close and work damn well.

Pros
  • Absolute legend
Cons
  • Hard to say

Revainrating 5 out of 5

Easy to read and install and accurate.

Easy to read USB voltage and current and easy to set current by bootloader. Test my power adapter, charging port and USB cable. One of my USB cables that I found with this meter and downloader wasn't great. Always be careful when booting a USB device. View all current ratings and restrictions. The bootloader has a fan to protect the components. I have an extra external fan to keep them cool.

Pros
  • Delivery was very fast
Cons
  • Updates

Revainrating 5 out of 5

Changed to five stars

This is actually one of the best picks. The meter's display is clear and bright. Getting it right takes some getting used to. The blue tooth is great. I am using an app on a tablet (Android 5.1.1). If anyone finds the counter buttons awkward, this is the way to go. So far the "biggest" problem has been my cables working fine with the meter and keeping the display out of sight. Compared to other aggregators I think it's a pretty good price and return on investment.

Pros
  • Certified
Cons
  • Not as thick as other picks

Revainrating 5 out of 5

Handy little gadget.

I've been using mine for a week now and it seems pretty accurate, at least not verified. It's hard to tell without a known number, but based on my batteries' performance to date, the numbers this device is reporting seem to match what I was expecting. The strain is very comfortable and has worked so far. perfect. My only complaint is that the components are on display, a case really could have been used to protect against the elements. Ideal for a test bench, but the exposed components make itโ€ฆ

Pros
  • High marks for support and durability from testers
Cons
  • Not sure

Revainrating 5 out of 5

Good electrical tester

I really like this tester so far. It gives me all the diagnostic information I could ask for and it's easy to use. It would be nice if it could remember its previous mAh readings after a power outage. It appears to be on the first screen, but it wasn't the one I reset to test capacity on a particularly large battery. It was screen 3 with the recording function. So when the power was turned off and on again, the capture screen I was using went back to zero. I had to drain my battery and startโ€ฆ

Pros
  • Free for educational purposes
Cons
  • Definitely bad product