On 2023-05-23 21:51, Lasse Langwadt Christensen wrote:
> tirsdag den 23. maj 2023 kl. 21.43.24 UTC+2 skrev Arie de Muijnck:
>> On 2023-05-23 20:42, Lasse Langwadt Christensen wrote:
>>
>>> the MLX90640 with a 35 degree field of view is ~$6-$7 on aliexpress
>> Could you provide a link for that? I cannot find anything below EUR 40.
>>
>
> https://www.aliexpress.com/item/4000041781708.html
Ah, I see.
That is the MLX90614, a single pixel temperature sensor, not the MLX90640 which is a 32x32 'camera'.
Arie.
Reply by Lasse Langwadt Christensen●May 23, 20232023-05-23
tirsdag den 23. maj 2023 kl. 21.43.24 UTC+2 skrev Arie de Muijnck:
> On 2023-05-23 20:42, Lasse Langwadt Christensen wrote:
>
> > the MLX90640 with a 35 degree field of view is ~$6-$7 on aliexpress
> Could you provide a link for that? I cannot find anything below EUR 40.
>
On 2023-05-23 20:42, Lasse Langwadt Christensen wrote:
> the MLX90640 with a 35 degree field of view is ~$6-$7 on aliexpress
Could you provide a link for that? I cannot find anything below EUR 40.
Arie
Reply by Lasse Langwadt Christensen●May 23, 20232023-05-23
tirsdag den 23. maj 2023 kl. 20.23.51 UTC+2 skrev boB:
> On Tue, 23 May 2023 04:53:52 GMT, Jan Panteltje <al...@comet.invalid>
> wrote:
> >On a sunny day (Mon, 22 May 2023 17:14:19 -0700 (PDT)) it happened Lasse
> >Langwadt Christensen <lang...@fonz.dk> wrote in
> ><0fa4d6bb-8b39-488d...@googlegroups.com>:
> >
> >>tirsdag den 23. maj 2023 kl. 01.30.49 UTC+2 skrev boB:
> >>> On Mon, 22 May 2023 13:50:41 -0700 (PDT), Fred Bloggs
> >>> <bloggs.fred...@gmail.com> wrote:
> >>> >On Monday, May 22, 2023 at 3:02:17?PM UTC-4, John Larkin wrote:
> >>> >> https://www.allaboutcircuits.com/news/toshiba-debuts-thermoflagger-as-temperature-sensor-ic-alternative/
> >>> >>
> >>> >>
> >>> >> This seems awfully silly to me. At least it's cheap, about 13 cents.
> >>> >>
> >>> >> Maybe it's useful for something else.
> >>> >
> >>> >
> >>> >A comparator with a reference current output.
> >>> I was hoping for something completely different.
> >>>
> >>> We use NTC thermisters.
> >>>
> >>> What I would really like is to be able to point some kind of (cheap)
> >>> IR sensor at a general area of power components and get a rough
> >>> estimate. Instead of tacking thermisters to transformers and FETs
> >>> which is kind of a pain.
> >>>
> >>> I looked into those IR sensors used in cheap $20 temperature guns but
> >>> the lens assembly, I think, makes that not too easy or cheap to
> >>> implement.
> >>https://www.aliexpress.com/item/4001283475551.html
> >
> >I use a MLX90640 with a Raspberry Pi 4 as IR camera
> > https://makersportal.com/blog/2020/6/8/high-resolution-thermal-camera-with-raspberry-pi-and-mlx90640
> >it was more expensive, about 60 USD, but works OK.
> >Could be same module?
> >Software:
> > https://panteltje.nl/panteltje/newsflex/download.html#xflir
> Yes, that and the alliexpress thing would work.
>
> But they cost too much for this conumer grade inverter/charger
> application
>
> Thank you for those ideas !
the MLX90640 with a 35 degree field of view is ~$6-$7 on aliexpress
Reply by boB●May 23, 20232023-05-23
On Tue, 23 May 2023 04:53:52 GMT, Jan Panteltje <alien@comet.invalid>
wrote:
>On a sunny day (Mon, 22 May 2023 17:14:19 -0700 (PDT)) it happened Lasse
>Langwadt Christensen <langwadt@fonz.dk> wrote in
><0fa4d6bb-8b39-488d-884d-473e15d8f77fn@googlegroups.com>:
>
>>tirsdag den 23. maj 2023 kl. 01.30.49 UTC+2 skrev boB:
>>> On Mon, 22 May 2023 13:50:41 -0700 (PDT), Fred Bloggs
>>> <bloggs.fred...@gmail.com> wrote:
>>> >On Monday, May 22, 2023 at 3:02:17?PM UTC-4, John Larkin wrote:
>>> >> https://www.allaboutcircuits.com/news/toshiba-debuts-thermoflagger-as-temperature-sensor-ic-alternative/
>>> >>
>>> >>
>>> >> This seems awfully silly to me. At least it's cheap, about 13 cents.
>>> >>
>>> >> Maybe it's useful for something else.
>>> >
>>> >
>>> >A comparator with a reference current output.
>>> I was hoping for something completely different.
>>>
>>> We use NTC thermisters.
>>>
>>> What I would really like is to be able to point some kind of (cheap)
>>> IR sensor at a general area of power components and get a rough
>>> estimate. Instead of tacking thermisters to transformers and FETs
>>> which is kind of a pain.
>>>
>>> I looked into those IR sensors used in cheap $20 temperature guns but
>>> the lens assembly, I think, makes that not too easy or cheap to
>>> implement.
>>https://www.aliexpress.com/item/4001283475551.html
>
>I use a MLX90640 with a Raspberry Pi 4 as IR camera
> https://makersportal.com/blog/2020/6/8/high-resolution-thermal-camera-with-raspberry-pi-and-mlx90640
>it was more expensive, about 60 USD, but works OK.
>Could be same module?
>Software:
> https://panteltje.nl/panteltje/newsflex/download.html#xflir
Yes, that and the alliexpress thing would work.
But they cost too much for this conumer grade inverter/charger
application
Thank you for those ideas !
boB
Reply by Jan Panteltje●May 23, 20232023-05-23
On a sunny day (Mon, 22 May 2023 17:14:19 -0700 (PDT)) it happened Lasse
Langwadt Christensen <langwadt@fonz.dk> wrote in
<0fa4d6bb-8b39-488d-884d-473e15d8f77fn@googlegroups.com>:
>tirsdag den 23. maj 2023 kl. 01.30.49 UTC+2 skrev boB:
>> On Mon, 22 May 2023 13:50:41 -0700 (PDT), Fred Bloggs
>> <bloggs.fred...@gmail.com> wrote:
>> >On Monday, May 22, 2023 at 3:02:17?PM UTC-4, John Larkin wrote:
>> >> https://www.allaboutcircuits.com/news/toshiba-debuts-thermoflagger-as-temperature-sensor-ic-alternative/
>> >>
>> >>
>> >> This seems awfully silly to me. At least it's cheap, about 13 cents.
>> >>
>> >> Maybe it's useful for something else.
>> >
>> >
>> >A comparator with a reference current output.
>> I was hoping for something completely different.
>>
>> We use NTC thermisters.
>>
>> What I would really like is to be able to point some kind of (cheap)
>> IR sensor at a general area of power components and get a rough
>> estimate. Instead of tacking thermisters to transformers and FETs
>> which is kind of a pain.
>>
>> I looked into those IR sensors used in cheap $20 temperature guns but
>> the lens assembly, I think, makes that not too easy or cheap to
>> implement.
>https://www.aliexpress.com/item/4001283475551.html
Reply by Lasse Langwadt Christensen●May 22, 20232023-05-22
tirsdag den 23. maj 2023 kl. 01.30.49 UTC+2 skrev boB:
> On Mon, 22 May 2023 13:50:41 -0700 (PDT), Fred Bloggs
> <bloggs.fred...@gmail.com> wrote:
> >On Monday, May 22, 2023 at 3:02:17?PM UTC-4, John Larkin wrote:
> >> https://www.allaboutcircuits.com/news/toshiba-debuts-thermoflagger-as-temperature-sensor-ic-alternative/
> >>
> >>
> >> This seems awfully silly to me. At least it's cheap, about 13 cents.
> >>
> >> Maybe it's useful for something else.
> >
> >
> >A comparator with a reference current output.
> I was hoping for something completely different.
>
> We use NTC thermisters.
>
> What I would really like is to be able to point some kind of (cheap)
> IR sensor at a general area of power components and get a rough
> estimate. Instead of tacking thermisters to transformers and FETs
> which is kind of a pain.
>
> I looked into those IR sensors used in cheap $20 temperature guns but
> the lens assembly, I think, makes that not too easy or cheap to
> implement.
I was hoping for something completely different.
We use NTC thermisters.
What I would really like is to be able to point some kind of (cheap)
IR sensor at a general area of power components and get a rough
estimate. Instead of tacking thermisters to transformers and FETs
which is kind of a pain.
I looked into those IR sensors used in cheap $20 temperature guns but
the lens assembly, I think, makes that not too easy or cheap to
implement.
boB
Reply by Fred Bloggs●May 22, 20232023-05-22
On Monday, May 22, 2023 at 3:02:17 PM UTC-4, John Larkin wrote: