@binaryrhyme i see, the "trick" is to either allow the current to go through T3 and thereby "short circuiting" the led, or T3 is off, and then the cur...

@ronalex4203 thank you, these magnets are beautiful ...

@robotbuilder thank you for the explanation ... I wonder, how do inverters ICs cause zero current on their output pin, when the base is "off" i....

@binaryrhyme What was most puzzling initially, that the led was on when we completely disconnected the Collector from Vcc. We asked -- from where d...

@binaryrhyme I think, and hope, that me getting stuck all the time scratching my head while tinkering with my kids is as valuable a lesson as the elec...

@binaryrhyme that's great -- had never heard of an analog multiplexer ... its surely a learning curve my jump into electronics ...

@binaryrhyme I was thinking about a bus architecture -- without yet knowing how this really works. But, i guess some kind of "synchronized" shift...

@binaryrhyme so, your thought is that those magnets in its cell that snap the pieces in place, would induce a current in an inductor embedded in a pie...

@robotbuilder I was thinking to get some plates from aliexpress, such as those [1] (and try to use only the flat ones somehow ... perhaps i will have ...

Indeed, you are right -- in some chess board implementations the board tracks placement only and MCU records the moves But, there are games where yo...

@robotbuilder indeed, I was thinking about a camera -- but, i envision this used by my kids, and a camera is quickly lost or broken and its probably ...

@robotbuilder its an interesting idea. But, cost is a factor -- i'd like to keep the cost down as much as possible. Also, i now realize that usa...

@will Yes -- i read papers on that -- but RFID doesn't seem well suited -- its hard to make it contained and local to a cell on a board ...