Recent content by rbelli1

A solution that I have seen on a step tracking watch is that they have metallic spots on the case and use a magnetic cradle with spring pins. Sealing two small pins into a case is way easier than sealing an actual connector system. The charger for that device is not smart. It burned up when it...

That sounds about right. Before I knew this I managed to get nothing but a sloppy mess down both sides of whatever I was painting. BoB

Watch some videos on car body painting. In particular, study how they handle the end of the stroke. My spray painting went from absolute drippy mess to mostly not a drippy mess the first time I used the technique in those videos. BoB

It will concentrate the magnetic fields. In your design the opposite pole of the magnetic field is all the way on the other end of the coil. If you put it in a ferromagnetic cup then the opposite poles will be right next to each other. You will probably want to put the chess piece magnets in a...

Nope. just BoB with two big 'B's. One is just not enough. BoB

I figured out your problem. Windows compression doesn't allow Unicode characters so the apostrophe is ’ instead of ' in your file names. If you use another (many other? any other?) compression program you won't have this problem. I use 7-zip. There are probably more user friendly ones out...

You keep mentioning that you are zipping files with Word. Word doesn't have a zip function. What exactly are you doing? BoB

DaveE's circuit uses the diode in photo-conductive mode rather than photo-voltaic mode. Photo-diode Tutorial BoB

Depending on the output current of your photo-transistor and the input impedance of your amplifier and ADC you may want the select transistor. BoB

This doesn't make sense. It is the standard connection for any RCD socket. The two are in series so the current will be the same no matter what order they are in. Can you be more specific other than "elsewhere"? BoB

Three Transistor CMOS Pixel The charge storage capacitor here is the gate capacitance of Msf. Four Transistor CMOS Pixel The charge storage capacitor here is Cfd. That could be integrated into transistor SF too. This allows for the use of a global shutter but costs one extra transistor per...

After some more research I have found that there is a charge storage capacitor associated with each photo-diode. The operation of the two devices is more similar than I thought. BoB

The only difference between the two technologies is the name. They are exactly as different as "eggplant" and "aubergine". BoB

How many bananas would need to be taped to a wall to warrant copyright protection? What if I drew a picture with bananas on a wall? If I sold a guide to reproduce the picture would the copyright (assuming that the picture I made with bananas was copyrightable) of the reproduction go to my...

It is exasperatingly unclear what was transferred here. The recipient may have simply purchased a piece of fruit. It depends on the age of the painting. A license for the Mona Lisa is worth nothing. The actual artifact is very valuable. A modern painting may swap these values. BoB