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Hi SunnySkyguy,
Have no doubt. I am staunchly against theft of intellectual property. The Stanford researchers give some legitimate reasons for needing to reverse engineer; although, there is no way to verify their intent.
The methods we have mentioned are really applicable to two-sided...
Re: Newbie 555 circuit problem
Here is a link to a very useful application note: http://www.sophphx.caltech.edu/Physics_5/Data_sheets/555appnote.pdf
Under selecting components, you will find the following:
This is not different than advice already give. Its main purpose is to encourage you...
The term you need is reverse engineering. There are lots of hits on Google. Here is an interesting approach from Stanford University: https://stacks.stanford.edu/file/druid:np318ty6250/Johnson_Reverse_Engineering_PCBs.pdf
On the few occasions I have done it, I used images of the board...
Apparently, the 0.5 mm and 0.65 mm versions are well known (https://en.wikipedia.org/wiki/List_of_electronics_package_dimensions) and appears to correlated with the number of pins. If know the reason is important, looking up the relevant standard is probably the best way.
Several years ago, I...
If you search on "eye blink detection" you will get several hits, including code examples. Here are just two examples:
https://www.youtube.com/watch?v=R8m4ovTZSYA
https://www.codeproject.com/Questions/331881/How-to-detect-eye-blink
My original response was a reaction to your aversion to using...
Some people deny evolution. What does it matter what "some" people say? Low intensity IR is not harmful. Review the data. You are exposed to it every day. Go with a proven technology that does not interfere with the driver.
John
How about giving a better clue as to which "Doppler effect based sensor" you are using, so we can look-up the datasheet. Alternatively, you could post a link to that datasheet.
John
How much current is available from the voltage divider you apparently have constructed? What are the resistance values and current needed?
You give very limited information on what you are actually doing. Assuming you are trying to run a variable speed DC motor, a better approach would be to...
1) Go to the Eagle home page, click on downloads, click on libraries, enter in the search window, "coilcraft." There are six (6) libraries of coilcraft products. Since you didn't identify the particular device you need, I couldn't check for you.
2) For simple coils, inductors, and...
There is not a lot to go on in the question and some ambiguity. For example, does, "The container can have any kind of cap (including white IR reflecting material)," mean that the container(s) with which you will be confronted may have different kinds of caps over which you have no control, or...
Starting with the capacitor discharged, at power-up the output will be high until the capacitor charges to the threshold level (2/3 Vcc). That explanation is on page 4 of the previously mentioned AN170.
This project seems to be wandering from getting an oscillator to function. Have you read...
According to an online calculator (**broken link removed** ), which I have not validated, your starting frequency with those values is about 4 Hz and the duty cycle is 65%. The high time is 0.15 s. Reducing R1 to 1K gives 5.8 Hz and 52% duty cycle. If R1 is 100 ohms (theory), then frequency...
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