The next PIC project

Apr 19, 2011 5 Replies

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Jan Panteltje 15 years ago

The next PIC project will be a FM stereo transmitter using the BH1415F chip, a FM stereo transmitter, controlled by a PIC 18F14K22, with a 2 line text LCD display for the frequency, and probably as always a RS232 input to set the frequency.

This to beam audio from my big screen TV. BH1415F is an interesting chip, with everything on board, stereo encoder, PLL. Found a small PCB with one on it on ebay, with SPI interface, 2 for ~10 Euro inclusive shipping.

I know there also exist complete boards for this for < 10 Euro, but those were sold out. Writing the PIC software will be interesting, who knows what I will think of..

Just to get my mind of vacuum technology, ultra high voltage technology, cryogenic temperatures, and time warps for a few moments.

Just some simple programming and soldering

What ever will be will be.

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josephkk 15 years ago

chip,

Euro

think of..

cryogenic

What is your favorite micro with USB device interface?

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wbl 15 years ago

hip,

Euro

k of..

cryogenic

Not PIC18

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Jan Panteltje 15 years ago

On a sunny day (Thu, 21 Apr 2011 11:01:47 -0700 (PDT)) it happened snipped-for-privacy@linnix.com wrote in :

I am not an USB fan. It is nice to have the 5V available for some things, but there is no galvanic isolation, and that makes it troublesome for many applications. Also I am not that familiar with writing USB drivers. I prefer ethernet or a RS232 interface if at all possible. RS232 also has some current available. Waiting for 'lightpeak'.... As to the FM transmitter, just found one for < 5 Euro on ebay:

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I may order that one, but I will build the PIC version too. Ebay is amazing, 4 GB mp3 players with FM radio go for < 2 Euro:

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and the video version for < 5 Euro:

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Makes it very hard to economically design that stuff yourself.

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linnix 15 years ago

F c=3D

10 =3D

hin=3D

gy,=3D

I am not either, but the world is. I just deal with it.

Why not, VBUS is 5V and there are 3.3V to 5V charge pump chips available.

I am deep into USB s*it for the fan.

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josephkk 15 years ago

BH1415F c=3D

~10 =3D

thin=3D

technology,=3D

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Player/280398077029/item

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I could do an Ethernet to FM micro music widget instead. Have to figure out how to access CIFS and NFS or add installable software to create the stream. Maybe i can use Icecast or similar. The USB widget has some advantages as it can look like an audio device, no handy support for that on network side that i know of.

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