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nearly. latches are easy and tristate IO should be easy (never done). but what i see in the tutorials it is no big deal. rest ok, maybe one may want to add that there are also a amount of latches

Holy Cow, now thats a feedback! wrote: you. Merci! amp the through Oops, they were supposed to go to ground. Got cut&paste happy there. what Gecko has You know, I didn't change that part of the

I would caution people thinking about X10 or similar protocol to be aware of the relaibility issues. X10 is very succeptable to noise which tends to be prevalent in powerlines and since its an open

Ah, the sockets...we had a discussion on that over at the Xylotex group. Apparently, a lot of the heat is designed to dissipate out of the package through the many ground pins. Sockets would likely

You're looking at a propagation time of only a little over 3 nanoseconds, there... :-)

If the equipment is under the same electrical net, why don't use a communication over mains wires using a Power Line interface and (if desired) X10 protocol? (otherwise use your own specific protocol)

I recall reading some ARRL stuff on radiosonde conversions years ago - probably worth looking for. it seemed pretty cookbook to me at the time. <upand_at_them@y...> wrote: cheap? and

I don't think I know enough to do that. I can follow schematics and build circuits, but RF stuff seems like voodoo. I was going to use my Yaesu VX-2R for transmission, but I want to minimize my costs

Looks like a nice design you have there. Here's some feedback for you. I like the use of the ULN2803's to drive the optos. I would fuse each output axis separately. The reason being, a 3 amp load

a totally digit because write...

<stefan_trethan@g...> wrote: totally digit because write... binary to get

Gary - You might find one or more of these of intrest. Jim http://www.lemosint.com/ http://www.maxstream.net/ http://www.rfdigital.com/ http://www.linxtechnologies.com/

Gary I was just looking through a book that had video projects, and one was an IR video rx/tx setup that claimed about 300 meters range. All else being the same, he used two 4"x4" fresnel lenses to

what about all those surplus radiosonde units I see for sale cheap? could you some how convert one to your purposes? I assume you've been reading the N&V near space stuff... Phil <upand_at_them@y...>

Yep, me again... I want build a really simple transmitter for my balloon project - I mean really simple. I'm only going to be transmitting CW with it, but I think I'll need about 1/2 watt to 1 watt.

In a message dated 4/11/2004 4:36:00 PM Central Standard Time, JanRwl@... writes: But it requires TWO resistors! (Sorry! ONLY if the input was a "sink-only" gate-output. For a souce/sink

Oh, okay. I didn't realize 3 feet was considered short. Thanks. Mike

haven't rated. I bought PLCC sockets for them originally but, after some navel gazing I could also just unfold the legs from under the chip and turn it into a QFP. Have

and of course thanks for the suggestions....

i do have a cpld, so integer math (not really math). nono, no divide... shift, add, such things is ok, but no divide please. i have modulo in verilog, dunno what will happen if i try to implement it.