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elmediel · 12th January 2008, 03:28 PM

i want to know the simplest functional schematic diagram (with real components) to describe the device 1 and 2...

i think it uses modulation/demodulation technique but i have no idea what are their pin configurations and proper setup...

**Nigel Goodwin** · 12th January 2008, 04:09 PM

This is exactly the same as you're asking in your other thread, the devices are UART's (as before), and the easiest (and cheapest) way is probably to use PIC's to make them.

If you want hardware?, consider the HD6402, who's datasheet can be found at http://www.intersil.com/data/fn/fn2956.pdf

However, this is a 40 pin chip and a lot more expensive than a simple PIC.

elmediel · 13th January 2008, 02:28 AM

is PIC capable of digital to analog and analog to digital conversion?

kchriste · 13th January 2008, 02:45 AM

Yes, but why would you want to do that? (As depicted in your diagram) It would be better to use the PICs built in USART.
Most PICs have an ADC built in, but you'll need a DAC or use the PICs PWM and a Low Pass filter to go from digital to analog.

elmediel · 13th January 2008, 02:57 AM

thanx guys..

ill study PIC

**Krumlink** · 13th January 2008, 04:17 AM

MAXIM makes the 1 wire interface chip, I am not sure of a part no. but go to their website to search for it www.maxim-ic.com

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12th January 2008, 04:09 PM	(permalink)
Nigel Goodwin	This is exactly the same as you're asking in your other thread, the devices are UART's (as before), and the easiest (and cheapest) way is probably to use PIC's to make them. If you want hardware?, consider the HD6402, who's datasheet can be found at http://www.intersil.com/data/fn/fn2956.pdf However, this is a 40 pin chip and a lot more expensive than a simple PIC. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

13th January 2008, 02:45 AM	(permalink)
kchriste	Yes, but why would you want to do that? (As depicted in your diagram) It would be better to use the PICs built in USART. Most PICs have an ADC built in, but you'll need a DAC or use the PICs PWM and a Low Pass filter to go from digital to analog. __________________ --- The days of the digital watch are numbered. --- Last edited by kchriste; 13th January 2008 at 02:48 AM.

13th January 2008, 02:57 AM	(permalink)
elmediel	thanx guys.. ill study PIC

13th January 2008, 04:17 AM	(permalink)
Krumlink	MAXIM makes the 1 wire interface chip, I am not sure of a part no. but go to their website to search for it www.maxim-ic.com __________________ MechTronics World of Warcraft is a disease