Recent content by cfgrs

Hello! So, pet project. Basically, I'd like to be able to monitor the distance between two moving points, with distances varying from 0-2m or so, with a resolution of at least 5cm or so. (The actual application is to measure the distance between a person's feet while moving, running, jumping...

Alas, nothing much, except what little I've heard from speaking with other fencers that had some experience with the systems. What I'd like to do is essentially eliminate the need for the fencer, so that the unit is stand-alone that can be used by any fencer equipped to work on a normal scoring...

Well, there are three weapons. Electronically, sabre is the simplest, and the blade simply needs to make contact with my opponent's conductive jacket to register a hit. For foil and epee, a hit only counts if it is delivered with the tip of the blade. For these weapons, there is a button on the...

Yeppers, a similar system is used at the higher levels, but they actually wear a special (read: expensive) conductive t-shirt under their fencing equipment which allows them to ground to their bodies, and it requires constant calibration and monitoring by on-site engineers and is still prone to...

The sabre blade is indeed insulated from the handle (rubber grips on all of them)

Actually, in the system that I'm building now (which is not wireless), I simply alternate between having one sabre "active" or the other (we're talking a couple hundred per milisecond), and when the sabre is not active, it is grounded to an input so that I can distinguish between a hit to my...

Anybody with a reference to something like this? i.e. using an HF signal to detect capacitance so a newbie like me can start learning the basics? most google searches just lead me to touch-screen stuff...

Hello, Well, basically I'm thinking of a small system for wireless sabre fencing. In a typical system, the sabre has +5V or somesuch, and makes contact with the opponent's grounded conductive vest to register a hit. To make the system wireless, I'd need to come up with a way around the fact...

What more needs to be known about the setup? That's pretty much it in terms of the restrictions. Single wire between two boxes, no return feed, and try to get a light to go off or something when the switch is closed? Any tips or possible avenues to explore would be appreciated!

Hello everyone! I have a bit of an engineering puzzle. I've only a passing understanding of electrical engineering, so still trying to puzzle if out. Basically, imagine you have one black box A connected, via a single wire with a switch, to black box B. There is no returning wire. The...