Author Topic: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera  (Read 10308 times)

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Offline Andyelectric2000

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #50 on: November 08, 2018, 06:28:05 am »
 

Offline Fardenco

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #51 on: November 08, 2018, 08:57:55 am »
Could anyone who own the HT-18 tell me if it is capable of recording video ?
Even if I see no reason why it couldn't, I can't find any reference to this in the manual.
 

Offline Moonbase

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #52 on: November 08, 2018, 01:24:46 pm »
I wonder if the HT-18 has some kind of parallax correction. In one of the ebay.de listings they show an image with a "blending distance" indicator but I doubt it being from this camera—the ad shows a zillion other wrong images (and text) …

https://www.ebay.de/itm/HT-18-Infrared-Thermometer-Handheld-Thermal-Imaging-Camera-IR-Thermal-Imager-X8/223189217057

I’ve now watched about 5 videos about the HT-18, and each shows a different firmware version. Anyone knows about a reliable source for these? Seems most are branded "Hti HT-18".

If the sensor is ok this thing might be a bargain at about €299.
« Last Edit: November 08, 2018, 01:29:26 pm by Moonbase »
 

Online The Doktor

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #53 on: November 23, 2018, 07:17:50 pm »
Amazon has $82 coupon on the HT-18 for black Friday only. Good time to buy, I just did.
https://www.amazon.com/gp/product/B07BDJZ845/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

BTW, how do you mount the close-up lens shown earlier in the thread?

Ed
 

Offline Zapro

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #54 on: December 05, 2018, 09:07:50 pm »
After Seeing Julian Ilett's video about the HT-A1 i decided to get one.

I took it to bits shortly after receiving it  ;D, and did a small write-up on my blog:
http://www.blog.zapro.dk/?p=469

Firmware is obviously for many different models, and also have some folders called HT-18, so same firmware all over i think.

The HT-A1 has no video recording - Someone mentioned that the HT-18 does video? Andy?

Regards,
Per.
 
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Online rhb

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #55 on: December 06, 2018, 02:05:42 am »
I wonder if the HT-18 has some kind of parallax correction. In one of the ebay.de listings they show an image with a "blending distance" indicator but I doubt it being from this camera—the ad shows a zillion other wrong images (and text) …

https://www.ebay.de/itm/HT-18-Infrared-Thermometer-Handheld-Thermal-Imaging-Camera-IR-Thermal-Imager-X8/223189217057

I’ve now watched about 5 videos about the HT-18, and each shows a different firmware version. Anyone knows about a reliable source for these? Seems most are branded "Hti HT-18".

If the sensor is ok this thing might be a bargain at about €299.

I caught the Amazon sale and got one.  It's quite a deal for the price.  It will adjust for parallax just fine.  Minimum focus for both cameras is about 6".  For my primary use case of property maintenance it's very satisfactory as is.

You can buy them direct from the factory via Alibaba for under $300 delivered to the US via DHL.

Here's a thermal only image of an MSP430G2553 LaunchPad a few minutes after I turned it on.  Lower right corner is the microUSB connector and the heating from power can be seen.  Just above that is the LED and what is probably a voltage regulator.  They're really small with laser etched markings, so I can't read them.  The dark lines are the serial port cables.  One for Rx-Tx and one to power the 5 V to 3.3 V level shifter.  They are a couple of inches above the board, so at less than the minimum focus distance.

The 4 little dots around the larger dot in the upper left are about 1 mm diameter.
« Last Edit: December 06, 2018, 02:21:41 am by rhb »
 

Offline Andyelectric2000

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #56 on: December 06, 2018, 10:56:14 am »
 


Offline theirishscion

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #58 on: December 07, 2018, 07:22:47 am »
Could anyone who own the HT-18 tell me if it is capable of recording video ?
Even if I see no reason why it couldn't, I can't find any reference to this in the manual.
Sadly no video recording on my HT-18 (bought yesterday during the Amazon lightning sale for $279 with same day delivery) which is running firmware 2.2.15
It does have video parallax correction (for what little that's worth, it's a pain to use, but it does work, and is undocumented in the HTI manuals)

Otherwise a fairly remarkable value considering the competition from FLIR/SEEK et al.

Battery life seems more than adequate, and it's a leaded 18650 in a spacious externally accessible compartment for when it comes time to replace it. Finally a self-contained (non-phone-based) sub-$500 high(ish) resolution thermal handheld, I'm as happy as can be, even if the visible light camera is insensitive to a fault and a pain to align. I should take a few board photos and so forth to demonstrate. 
 
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Offline hti201801

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #59 on: December 10, 2018, 05:32:14 pm »
Hi :

I come for the manufacture of the HTI -18 thermal camera , are you interested in the thermal camera  ? if not ,pls contact with me email: hti201801@hotmail.com  , we are able to offer a good price 20% off discount for you !
 
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Offline Andyelectric2000

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #60 on: December 10, 2018, 07:05:45 pm »
Hi,

it is possible to buy the sensor as a spare part ?

Ht-18 or Ht-19 sensor ?

How much would he cost ?

Best greetings !
Andy

 

Online Simon

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #61 on: December 10, 2018, 09:16:53 pm »
Hi :

I come for the manufacture of the HTI -18 thermal camera , are you interested in the thermal camera  ? if not ,pls contact with me email: hti201801@hotmail.com  , we are able to offer a good price 20% off discount for you !

Hi I came from the administration of this forum, please do not spam us or I will ban you. If you want to advertise on the forum please contact Dave and do a deal with him. You must be really professional and trustworthy manufacturer with a hotmail address - NOT!
https://www.simonselectronics.co.uk/shop New stock now in of EEVblog 121GW and Brymen 235 Now selling a selection of Probe Master probes.

Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Online rhb

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #62 on: Yesterday at 01:10:19 am »
Simon,

I bought one of these and just moments ago sent a long email suggesting exactly what they have done.  TEquipment and Saelig offer forum members a discount.

Keysight, R&S, Siglent and other OEMs do similar things.

I had posted an image in this thread:

http://www.eevblog.com/forum/thermal-imaging/chinese-ht-18-220x160-8-hz-handheld-thermal-camera/msg2015320/#msg2015320

My sister then copied the post verbatim in an Amazon review.  When I received the camera I was very impressed and sent a long email the the hotlink.com address which appeared on the card saying  thank you for buying our product.  My email wound up in their spam bin and went unnoticed until yesterday when I got a note of thanks for some suggestions I made and a request that I write an Amazon review.  To which I replied it had already been done.

I think you owe them an apology.  A 20% discount to forum members is very generous.  I probably suggested they do something along this line in my first email and having forgotten I had done so, just did it again.  In fact I went to a lot of trouble to making a convincing case for dosing so.  Having been directed to this thread by me, their actions were entirely reasonable.  It was certainly not spam to offer a discount to forum members 3 pages in to an existing thread at the prompting of a forum member.

So if you want to blame anyone you should blame me. 

Reg
 

Online Simon

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #63 on: Yesterday at 01:22:10 am »
Well if your happy buying from a company that has a hotmail address. I am not treating them as spam but it would be better if Dave and I are notified. So long as we don't get repeated posts offering the discount.
https://www.simonselectronics.co.uk/shop New stock now in of EEVblog 121GW and Brymen 235 Now selling a selection of Probe Master probes.

Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Online rhb

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #64 on: Yesterday at 03:14:41 am »
If you were selling to the Chinese market.  Would you hire a full time Chinese speaker to handle customer correspondence?

I had been in contact with the OEM via Alibaba at a different address.  I think it quite likely that the English language customer relations has been out sourced to a small company.  The choices for a generic business account are gmail, yahoo and hotmail.  The first two are well known for data mining user emails.  Who's to say what they do with the data they collect?  There are currently no laws to regulate that.  Of course, MS may do the same.

A good friend of mine who is a senior manager for AT&T consulting uses a hotmail address.  He was rather chagrined when his msn.com address got hijacked

I was a little surprised by the hotmail address on the card as well as the presence of the card which was sitting underneath the unit with the "Thank You" side up.  The packaging would put Apple to shame. a full die cut foam filler and something I'd never seen.  The box is held shut my thin magnets embedded in the box.  It took me a a while to figure out how to open it as it is seamless.

But Peak Technologies offered a similar sort of discount and I don't see any moderator complaints in that thread.  Did Peak notify you in advance? 

It appears to me that HTI simply looked at the forum, observed that it was common practice.  The real spammer is saelig.com which requires you to post a request for the code.  So that thread shows up in my "topics I've posted to" list on a regular basis because I requested the code.  They won't give it to you on the phone.
 

Online Simon

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #65 on: Yesterday at 03:18:10 am »
chinese people with hotmail links are usually spammers, sorry but fact of online moderating! OK so this one is not - we hope.
https://www.simonselectronics.co.uk/shop New stock now in of EEVblog 121GW and Brymen 235 Now selling a selection of Probe Master probes.

Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Online rhb

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Re: Chinese HT-18 220x160 8 Hz Handheld Thermal Camera
« Reply #66 on: Today at 12:12:57 am »
@hti201801

What is the focal length of the thermal sensor lens?   I'd like to experiment with a closeup lens, but want to actually do a proper job of designing it rather than just buy a random lens. 

The minimum focus stated in the manual  is 500 mm but tests with my camera appear to be sharp to 150 - 200 mm from the body of the camera.   It's a little difficult to judge as the 8 Hz update rate makes it hard to hold still long enough.  So for the best image I'll need to add a mount to hold it still.

I want to design a closeup lens that would cover 200 to 10 mm and attach neatly to the front of the camera.

BTW the microUSB connector is a little too close to the front edge of the recess for the rubber cover, so I had to cut away a bit of the plastic on the cable to get it to fit properly.
 


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