DIY telemetry ... Re: [Diy_efi] tiny injection

[The Punisher]

I have used both the Microchip PIC uC's and Atmel AVR's. I dont do assembly, 
so I use basic compilers.
For the PIC I use Micro Engineering Labs PIC Basic Pro Compiler. Its easy to 
use, and has good final code size/speed. the code syntax is 99% compatible 
with basic stamp code, but you'll be running MANY, MANY times faster!!(and 
way cheaper too!) My prefered PIC chip is the 16F877.

I also use the Atmel AVR series. I realy like these better, they cost less, 
and run faster due to the fact that they execute aprox 1 instruction per 
clock instead of one per 4 clocks on the PIC. I use the AtMega series 
running at 16Mhz. The compiler I use is FASTAVR. Its very easy to use, and 
has very compact/fast final code. I'd say its final code runs as fast as 
most average "C" compilers (but not quite as fast as the real high end 
stuff). I use the STK-500 programmer/development system which only costs 
79.00! I prototype on a breadboard and use an ISP cable to download programs 
as I write them. Development time is REAL FAST! Without too much effort I 
can get nice readings on the ADC down to about 10-20mV. I interface an LCD 
display on almost evrything I make and actuly use the display for most of My 
debugging while I code.
The Atmel also offers the AVR studi software which is quite pwerfull for 
FREE!!! If you like "C" then the "AVRGCC" compiler is free and is said to be 
good.
Alot of people use motorolla processors and the '51/'52 series stuff. I may 
be wrong but I believe most of this stuff is a bit dated and slow. I think 
you'll also find the hc11 and 051 guys are probably the ones that learned it 
school many years ago. (I KNOW I gonna get flamed on this one!!!) hehehehe



And about the price inflation thing on the latemodel car performance parts. 
Where I used to work we did 4thgen F-bodies and C5 vettes 
exclusivly(almost). Dont get me wrong, the C5 is an awesome car, but the 
price hike for very similar(sometimes the same)parts is outrageous! But hey, 
if people are willing to pay it, the companies are only too happy to charge 
them more. I guess it makes some people feel better about themselvs if they 
pay more, especialy if they let YOU know they paid more :)


From: "Santi Udomkesmalee" <scathontiphat at hotmail.com>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: DIY telemetry ... Re: [Diy_efi] tiny injection
>Date: Fri, 28 Jun 2002 17:52:39 +0000
>
>I have to agree that this thread has taken an interesting direction.  I've 
>decided to drop the forced induction idea for my rc car (which arrive 
>yerterday by the way, I'll be tinkering away over the weekend for sure) and 
>use my money to practice making telemetry systems.  I'm thinking of using 
>the 8-bit transmitter from rentron (www.rentron.com) to start off with, but 
>if any of you guys have any other suggestions, I'd love to hear them 
>(especially if they can transmit larger than 8-bit packets, and are still 
>cheap).  Also, if any of you guys could suggest a nice cheap 
>microcontroller with built in a/d for the transmitter that would be nice 
>too.  thanx
>
>-santi
>
>p.s.  I know a lot of the price inflation comes from companies having to 
>invest money in order to get CARB certification.  But mostely, they charge 
>more because they can, and people will always want to go faster.


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