| Author | Message | ||
     A. Eckhoff Rating: N/A |
Quite a while back (like a year or more) there was a news item here that said you could get the Cyber3dVisor shutter glasses for the cost of shipping. Well, I bought a pair and when they came, I hooked them up, but the controller that came with them made my monitor loose sync whenever I powered it on, so I threw the whole mess in a box saying I would "get back to it some other day"... So, last night I finally got around to taking the thing apart. The first thing I found was that the board inside was amazingly simple. It only has two chips a 4013 Dual D flip-flop with Set and Reset, and a 4069 Hex inverter. No resistors, no capacitors, amps, transistors, diodes, or anything else. (Unless you count the resistor on the Power LED...) Theoretically, the circuit logic seemed sound. However there seemed to be quite a few redundancies in there, like the output signal being negated, and then negated again. I'm not sure if that is for timing or what... Anyway, the first problem I found was that the power switch on my board wasn't making good contact. So I replaced that. The second problem I found was that they were actually modifying the sync signal from the VGA card by negating it and then negating it again before sending it out to the monitor. I couldn't see any use for that. As far as I was concerned they should just be sampling the signal and passing it straight through to the monitor, so I shorted the signal to be passed directly through and BAM! The thing started working... (Yeah, it amazed me too.) Anyway, I ran some tests with the Win3d software on the Cyber3dVisor setting and had decent success. The only problem with the circuit is that it seems to loose sync quite frequently. I have to switch the glasses off and on again to regain the sync because periodically one lens will go black with the other clear and it will stay in that state. (Of course this may be due to my unorthodox modifications, I'll have to do some more looking...) However, If anyone would like to see a schematic of the insides of the controller box, I can probably work up a nice gif of them or something. I'm sure the circuit could use some improvement, and maybe someday I'll actually get around to redesigning it, but as it stands it's really not too complicated, and might be easier for a beginner to build than some of the other circuits in the homebrew section here... Didn't know if anyone was interested or not.. |
