Mileseey TR256i Smartphone TIC - Page 1
Forum section: electronics / general

author: rek
author_rank: Newbie
timestamp: November 22, 2023, 11:46:53 pm
content: I recently picked up a Mileseey TR256i smartphone thermal camera incredibly cheaply in some of the recent eBay sales coupons (about 220 AUD for the 256x192 version). I believe this is based on the Infiray Tiny1 core like many of the other mystery-brand imagers of this specification coming out of China?https://www.mileseeytools.com/products/thermal-imaging-camera-for-phone-mileseey-tr256i?variant=42920111964321It seems to operate fine enough (although the Android APK is a direct download rather than from the Play Store, which is a little strange), and takes nice photos where there's a decent amount of contrast/range in the thermal image. The 25 Hz is also much nicer than the lower range FLIR units I'm used to (Flir ONE Pro, hacked E4).However when dealing with photos with subtle temperature changes it seems incredibly noisy - refer the attached pic. Much more than the images from the typical FLIR of similar capability (that said I more or less assume their firmware post-processes their images quite significantly). I wonder if this is par for the course for this type of imager, a defect in the bolometer, or the result of the software outputting a raw image without any smoothing?I intend on using this in the workshop with a macro lens (and have a Hikmicro Pocket 2 on the way for general thermal imaging) so this noise with subtle temperature changes isn't necessarily a huge concern of mine - it'll still be great for PCB & machine analysis where there is a decent gap between min/max temperatures - just not so much for building thermal inspection type roles!Is there any other smartphone software that can/might work with this unit? Or Windows software? (I see the IRCAM software in the thread, but I can't access the trial version through the MS Store for some reason)

author: rek
author_rank: Newbie
timestamp: November 23, 2023, 12:31:16 am
content: I've done some basic looking around.It works with the "P2 Pro" app on the Play Store, but it's not very good.The Topdon software from this link (which I got from the Victor thread) seems to work:https://www.topdon.com/pages/pro-down.html?fuzzy=TC001The PC software works and looks quite good indeed, the Android software also works but the interface is a little odd.

author: PashaF
author_rank: Newbie
timestamp: June 02, 2024, 01:41:26 am
content: foto

author: Fraser
author_rank: Super Contributor
timestamp: June 02, 2024, 06:21:17 am
content: The OEM for this camera dongle is Dianyang Technology. Hence the “DY” marking on the PCB and flat flex cable. DYT specialise in making thermal imaging products that are sold under others brand names. They used to use SEEK Thermal cores but moved to Infiray cores when the Tiny1 and S0 cores became available. The Victor thermal camera dongles are another DYT product. Worthy of note is DYT’s ability to make camera dongles that will only work with a particular App and they offer this option to the client. Many of the the PCB analysis thermal cameras on the market are also made by DYT and the locking of the camera to a particular APP is used to set the feature set available for a particular model at a certain price point.https://www.dyt-ir.com/Fraser

author: pinchies
author_rank: Contributor
timestamp: September 05, 2024, 11:36:23 pm
content: Does the TR256i work as a USB UVC / webcam too on PC? Or does the image only show in specific software?

author: ArsenioDev
author_rank: Frequent Contributor
timestamp: September 06, 2024, 02:24:52 pm
content: If these are all the same heritage, might it be feasible to flash-swap them to re-code as another unit? It's stored in that NOR flash there.

author: tigrr
author_rank: Contributor
timestamp: December 01, 2024, 10:28:29 pm
content: Quote from: rek on November 22, 2023, 11:46:53 pmCould you please tell me more about this lenses. Preferably: parameters, photos and links where to buy?

author: rek
author_rank: Newbie
timestamp: December 06, 2024, 06:55:22 am
content: I never got around to doing this (yet) for the TR256i, but I've done it for other thermal cameras.You can use a relatively cheap ZnSe* lens intended for CO2 lasers, and design/3D print a little holder for the lens that secures it around the camera.The lenses are widely available on Aliexpress - here is a link to one I bought a while back. You have a good choice of lens sizes and focal lengths to suit your needs.https://www.aliexpress.com/item/1005004441211317.htmlEDIT - that link is bad, the prices are too high. I paid between 12-20 AUD for my lenses. Not 40! Browse Ali for other stores with a better price.* - I believe there are other more expensive lenses that offer better fidelity, but these are "good enough" for hobbyist work

author: rek
author_rank: Newbie
timestamp: December 06, 2024, 07:03:09 am
content: Quote from: pinchies on September 05, 2024, 11:36:23 pmI don't have it on me to check now, but I did a while back - from memory, by default it gave a grayscale thermal image when interfaced as a standard Windows USB webcam. I didn't try to see how/if it could be changed to give a different picture.

author: tigrr
author_rank: Contributor
timestamp: December 09, 2024, 08:49:48 pm
content: Quote from: rek on December 06, 2024, 06:55:22 amI'm interested in your opinion. What focal length of the lens will be optimal for examining elements on printed circuit boards? Advise, from the 6 focal length values ​​that are on the screenshot of the store you recommended on Aliexpress. Or, do I need to have several lenses with different focal lengths?.

author: Fraser
author_rank: Super Contributor
timestamp: December 09, 2024, 09:46:13 pm
content: 50.8mm & 101.6mmThe 50.8mm provides almost microscope detail of a single component and the 101.6mm provides a larger field of view for surveying a PCB for hot spots during repairs. The exact component causing the heat will be easily identifiable at 100mm distance.See the recent post on thermal imaging of PCB’s for example pictureshttps://www.eevblog.com/forum/thermal-imaging/minimum-specification-of-a-thermal-camera-for-pcb-repairs-some-thoughts/

author: tigrr
author_rank: Contributor
timestamp: December 09, 2024, 10:07:54 pm
content: Quote from: Fraser on December 09, 2024, 09:46:13 pmThanks for the advice!How did you attach the lenses to this thermal imager?

author: Fraser
author_rank: Super Contributor
timestamp: December 09, 2024, 11:40:05 pm
content: I do not own that specific model of camera (but I have lots of experience on similar cameras) so cannot assist on a mounting method. Most people either 3D print a clip on mount or fabricate something using available materials.Fraser