Categories
air quality

uHoo

uHoo – most advanced air quality monitor, at least if consider a number of sensors. Including advanced sensor like CO, CO2, PM2.5, VOC, O3, NO2. And also traditional like temperature, humidity, and air pressure.  Measurements look accurate enough.

uHoo and iPhone

The device does not have any local indicators. Not a single color LED to show air quality status. The only way it communicates with the world is Wi-Fi and mobile application. The application (v 3.8) or backend infrastructure that makes it work is unfortunately unstable. Also, an interface is poorly adapted to iPhone X.

uHoo is not portable due to many reasons like no local indication, no battery, need Wi-Fi (and new connection setup will take time).

Categories
Android Devices

Samsung S8 AFC charging time

Long time no Samsung. 🙂 Mostly because of the previous experience (read in Russian). But anyway did a test of Adaptive Fast Charging (AFC) from Samsung. Using Samsung S8 with AFC charger from the box.

Charging Samsung S8

What can I say?
I see some cheating with charging percentage displayed by the phone to get “Full Charge in 90 minutes” in reviews.

But the real numbers are more like 120 minutes.

Just to compare with a device that shows true percentage see image below

iPhone 8 charging

50% 80% Show 100% Real 100%
Apple iPhone 8 5v 12W charger 00:28:00 00:51:00 01:41:00 01:41:00
Samsung Galaxy S8 AFC 00:44:00 01:08:00 01:28:00 01:56:00
Categories
air quality

Green Day CO2 Monitor

One of the oldest devices I got for CO2 monitoring is AZ-7788 GreenDay. It is 4 years old now. The device is still good and accurate.

Green Day

Used as portable mostly because it has an LCD and not require setup.

Categories
DVR

NextBase 612GW

First 4K/GPS/WiFi Dashcam on market.

NextBase 612GW

Metal body looks good. The device is relatively heavy. Weights distribution and center of mass are not perfect and it sometimes affects image quality (right side vibration). Compatibility with 412GW GPS connector (make upgrade easy and fast). A touchscreen is much better than sensor buttons on 412GW. A physical power button is also good. What is absolutely wrong about this dashcam is Wi-Fi speed. View of any HD video impossible. Copy 1 minute of 4K video (340MB) is taking so much time (more than 10 minutes) that my 3 attempts to do that failed for different reasons. Wi-Fi is only usable for a preview of Low-Resolution files (if enabled).  Power consumption is high, but accumulator capacity and charging speed is not.

Update 2018-11-26, after 10 months of use: Too much hangs. Need to push Reset button at least once a week. Dashcam does not allow to go into the menu without the need to first stop recording.

Update 2022-01-25, Dashcam is dead. Last year or so it may not always start properly. Need a lot of reset. A bit better on summer. At the winter probability that you will got it started with ignition is about 30%. I assume that is related to poor power circuit and small battery capacity.

Pros

  • 4K or 1440/60p
  • daylight video quality
  • touchscreen
  • GPS
  • removable CPL filter
  • timelapse and parking mode
  • speedometer screensaver

Cons

  • expensive
  • charging is slow (2h, 5v 0.15A)
  • small battery capacity (for this consumption)
  • Wi-Fi is slow
  • video quality at night
  • “NextBase” logo on footage

Technical details:

  • Accumulator 3.7v 280 mAh 1.04Wh
  • SoC (CPU): Ambarella A12S75
  • RAM:  512 MB DDR3L 1866
  • ROM: 256 MB NAND Flash
  • Sensor: SONY EXMOR R CMOS
Categories
USB meter

UM24C

Yet another USB Tester with PC/MAC connectivity. This time using Bluetooth.

Device
UM24C
PC Software

Application is old-shool and simple. It cannot resize to use full screen, cannot autodetect port to use, cannot show large graphs.

Categories
Uncategorized

Kyivstar top up using Portmone

with fee: https://www.portmone.com.ua/r3/en/kyivstar/

с комиссией: https://www.portmone.com.ua/r3/kyivstar/

without extra fee: https://www.portmone.com.ua/r3/en/new-kyivstar/

без комиссии: https://www.portmone.com.ua/r3/new-kyivstar/

see also: https://pay.kyivstar.ua/

Categories
USB meter

AVHzY CT-2

Yet another USB Meter. AVHzY CT-2 (ChargerLAB POWER-Z KT001, Kotomi Premium).  It can both store curves offline or be used together with PC application.

AVHzY CT-2

PC Application

not as good as ChargerLAB Power-Z KM001 has. Poor visualization and export options. But at least it has English language interface. Support site available at http://www.avhzy.com/ AVHzY PC Application 1.79.0

Categories
apple iphone

Charging iPhone X

iPhone X got 1.5 times increased battery capacity in compare to iPhone 8 and now there is some difference appear in charging time using 12W and 29W Apple chargers. Also, standard USB port now charging more than 6 hours.

50% 80% 100%
PC Port USB 2.0 03:00:00 04:40:00 06:10:00
Apple 5W charger 01:25:00 02:05:00 03:25:00
Apple 12W charger 00:35:00 01:05:00 02:10:00
Apple 29W charger 00:30:00 00:55:00 01:55:00

iPhone X charging time

Categories
USB meter

Chargelab Power-Z KM001

Nice device to investigate charging issues. See how fast charge works. Investigate power consumption of different devices in different usage mode.

Power-Z KM001 USB Power Meter

It has PC Software that creates nice charging trends. That is what makes it different from most of USB Meters.

Power-Z PC application v0.0.6

Categories
apple Devices iphone

iOttie wireless Qi with iPhone 8

Using iPhone 8 with iOttie Qi Wireless car charger.

iOttie Easy One Touch Qi Wireless

Use iOttie charger for about a month. I would say it is nice that there is no need to plug in cables any more. What is not that great is iPhone wireless charge speed. It is slow.