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fsphil / hacktv

Analogue TV transmitter for the HackRF
GNU General Public License v3.0
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Is support for Raspberry Pi possible? #102

Closed DemonKingFukai closed 7 months ago

DemonKingFukai commented 1 year ago

RPItx, PiFM, and various other softwares and hardwares use pin 7 on a raspberry pi to transmit various signals. Is it possible to utilize this for transmission using HackTV? There is support for FL2k so I thought Raspberry Pi would be supported as well.

fsphil commented 1 year ago

Technically yes, but only the two narrowband TV modes 30-am and nbtv-am would work. The maximum bandwidth of 250kHz just isn't enough to fit a standard 525/625-line TV signal - it would need to be at least 25 times wider.

03stevensmi commented 1 year ago

Does that also include the external hardware extensions? Like one of those rpi tx hats? There are a few that can boost the rpi to a much wider band and frequency. Or would those not work.

fsphil commented 1 year ago

Have you got a link to one?

03stevensmi commented 1 year ago

Have you got a link to one?

Sure, Here is one https://github.com/cariboulabs/cariboulite

fsphil commented 1 year ago

Its analogue bandwidth is 2.5 MHz, better but still too narrow for an NTSC/PAL TV mode. You may be able to get monochrome video from it but it wouldn't look all that good.