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FPGA Single LED Demos: FPGA board for a good ideas/suggestions

Jim Granville schrieb:

dual color LED is

1.4% of the FPGA price and about 80% of the PCB price (PCB quoted in 10k qty) but well yes its still a tiny factor

thanks for the part numbers - they are so venerable that google has trouble finding the datasheets, but st.com has them online

and no the PDM (as in 4089) is not same as delta-sigma, so I will possible write the 4089 in VHDL just for the demo

there is a user slot with 6 FPGA pins so the IR thing should got there

One-Wire (as per dallas 1-wire) is does depend on known frequency, it is not fully self-adjusting (and can not be)

1-wire (a dallas) are not autobaud, many uart on one wire are autobauding

Reply to
Antti
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How about a firefly mimic?

If you are lucky enough to live somewhere that has fireflies, you could make a green LED blink like a firefly's bum, and thus attract a swarm of them eventually.

I think there is a snag in that some fly in a sort of J shaped path during their lit period. Behaviour varies between species.

Also, it seems the males fly and flash while looking for mates, and the stationary female flashes in response. I guess males might be attracted even if the did not flash first. They may think they've found a lady firefly with an absolutely enormous bum, but ultimately they will be disappointed.

If you'd like to get into firefly sex (not implying you are amazingly small in the dingly-dangly department of course), then here might be a good place to start:

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Another insect you might mimic is the cricket. Apparently they chirp at a rate related to temperature. Thus you could have a temp sensor input with an audio output. And I find their chirping very pleasing to the ears.

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Reply to
Kryten

Replace or parallel the LED with an IR LED and use it to make a TV disrupter that randomly changes the channels, turns down the volume, or turns off the TV via the TV's IR remote reciever ;-)

Reply to
Ray Andraka

Reply to
Tommy Thorn

I had another idea.. output delta-sigma modulated speech (or sound). Verify it with a simple speaker-ldr-battery device. I know C64 could use very basic speech samples with it's taperecorder. So it should be doable.

Reply to
pbdelete

A speaker can be directly plugged in (there is small extension slot) and it is possibe to send data to the FPGA with up to max 6MByte/s (4 bit SD mode when card clock is 12MHz) for speach way more than required :)

of course the audio modulated LED emitted light could be used for audio capture using some photosensor as well

Antti

Reply to
Antti

Antti ( snipped-for-privacy@xilant.com) wrote: : Hi Tommy,

: actually the board is visible in the website header at :

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Antti, One thing springs immediatly to mind for this - JTAG.

More specifically JTAG hardware that can manage Xilinx FPGAs and platform flashes, and has programming software for Windows

*and* Mac OS X...

The Xilinx tools should run at native speeds under Parallels Workstation on the new MacBook Pros, and add a JTAG solution...

Cheers, Chris

Reply to
c d saunter

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