Foxy
@foxy
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Joined: 2020-10-30 11:42 am
Last seen: 2023-12-14 9:58 pm
Topics: 3 / Replies: 53
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RE: Documentation of projects or questions

@will Ever heard of a McBee computer ? The university where I got an MSc had one in 1959 as I remember it. A few of us post grads snared a profes...

2 years ago
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Documentation

Seems I excited a bit of interest here. Will: I'm from an old generation before the invention of OOP. Perhaps there is something to it for industri...

2 years ago
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RE: Documentation of projects or questions

@ronalex4203 A schematic diagram is made to show what is connected to what and no attempt is made to show component location nor wire routing. It ...

2 years ago
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Replies: 31
Views: 3158
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RE: Newby question: simple led circuit - measuring current, led resistance

A LED is, in fact a semiconductor diode; you could use it as diode as long as you stayed below the reverse breakdown voltage which is quite low so the...

2 years ago
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Graphic

Happy this was useful. Actually this approach works nicely for many problems involving non-linear devices: transistors, mosfets, etc and anything else...

2 years ago
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RE: Newby question: simple led circuit - measuring current, led resistance

There's a simple graphic method for selecting the series resistor for a led. Check out the attached example

2 years ago
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RE: 433mhz communication wrinkle

Thanks for the insight. I have no intention to use it for morse code, just trying to learn by doing

3 years ago
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RE: 433mhz communication wrinkle

@ruplicator Yes I got it to work transmitting one's and zero's but there is one problem: transmitting a one works ok but on transmitting a zero the ...

3 years ago
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Replies: 4
Views: 609
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RE: Water Distillation Project

@davidmcsweeney Re batteries. Take a look at for information on batteries. The various battery chemistry technologies need different algorithms ...

3 years ago
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RE: Water Distillation Project

Another thought 4/ re plastic. I've found that plastics are sensitive to sunlight in spite of the "last forever" mythology. The transparent acr...

3 years ago
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RE: Water Distillation Project

You've already made a good start with the system engineering you've done so I will only offer some comments: 1/ re batteries. I would use two batte...

3 years ago
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RE: temperature controlled relay for a motor

@tperry724 If it's not broke don't fix it. Another thing to keep in mind in is to put in a timer so once the motor starts or stops it won't stop o...

3 years ago
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RE: temperature controlled relay for a motor

I don't see much fundamentally wrong with the code although there is some overkill. Why are you using a DHT11 just to measure temperature when a simp...

3 years ago
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