"No lies" IR Thermometer - part II

RE: "No lies" IR Thermometer - part II

Marvian — Wed, 22 Nov 2023 23:13:32 GMT

Hi David, I am new to PSOC5 and I love this project and try to build it but I could not to read the IR, project files the google drive link does not work and I appreciate for sharing the files.

RE: "No lies" IR Thermometer - part II

three-phase — Mon, 24 Sep 2018 20:31:12 GMT

Great update on your project.

Kind regards.

RE: "No lies" IR Thermometer - part II

koudelad — Mon, 24 Sep 2018 18:06:57 GMT

Thanks to all of you for the kind words.

Well, it is a first professionally manufactured PCB and the first made PCB after 15 years.

I used the same program before to draw one or two PCBs when I was about 15. I only used through-hole components and the layout looked exactly the same as schematics. The PCB also had many faults... for example the default pad sizes... they were so small I drilled them away during drilling the holes. And I was trying to drill 0,8 or 0,6 mm holes with a hobby 5-10$ drill (the ones with a DC motor without any gears).

My method was to print on a special foil for ink printers (at home, of course) and than attach the printed side to the photo-resistive copper. I used UV light or plain 500 W light to expose and NaOH to wash away the exposed film. Then all went to FeCl3.

I also accidentally mirrored the printed PCB image a few times, so I had a few beautiful, but completely useless boards [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-cfb4cd65-e36a-4a5c-894a-76bd5218da9d/contentimage_5F00_2516.png:16:16]

However, even before that, I tried scratching a plain copper layer and also another PCB by drawing with a special pen and etching in FeCl3. Both was terrible. And the worst part - I had no idea that the copper needs some finish to avoid corrosion.

I don't have any of those PCBs, it was an interesting experience making them, but quite painful, because I didn't know anyone else making his own PCBs. There were so many unsuccessful attempts, but I had the time and learned a lot.

David

RE: "No lies" IR Thermometer - part II

14rhb — Mon, 24 Sep 2018 15:22:36 GMT

David,

That is a great write up on an interesting project. I'm very impressed with your hot air gun skills reworking that 44-pin device. I look forward to any updates.

Rod

RE: "No lies" IR Thermometer - part II

shabaz — Sun, 23 Sep 2018 21:56:43 GMT

Hi David,

That's really impressive. I can't recall my first PCB but I'm sure it must have been really bad.

Also it is interesting to see the Melexis device being used - they make nice sensors, but they don't use the usual distributors here, which makes it a pain. They also have a nice infrared array sensor (but more expensive than the Grid-EYE : (

It is all looking really great, looking forward to your next post in this series.

RE: "No lies" IR Thermometer - part II

fmilburn — Sun, 23 Sep 2018 21:30:45 GMT

Hi David,

that is fairly advanced for your first PCB and is looking quite nice.

Frank