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Thread Closed: Became flame-war

???
07/31/08 01:06
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 		 #157150 - Narrowing it down
Responding to: ???'s previous message
Ok you have 16 Analog inputs and need an Analog Multiplexer For example 74HC4067. If the inputs are high impedance you will need an Op-amp. How many bit A/D do you need 8,10,12? What kind of accuracy and resolution. The outputs are 0 / 5 Volts as in CMOS or TTL? connected to what? you may need drivers.

More important What do you have in skills? Does your group have any software skills? with what?

What about hardware? Who will design and layout this board?

Why did you choose this particular chip?

Do you have any tools like programmers , emulators , IDE's, ect.

I ask this because you may want to buy a development board. If you can find one that suits your needs.
As far as the CPU Is am not sure if there are any easy BASIC setups for the 8052 (Anyone) A packaged solution like the BASIC Stamp may be easier.

Do you want to learn anything, or just get it done?

Define a small budget $50, $100 $250 USD?

In the end your task is read 16 analog inputs - sort them, then set 16 digital outputs based on the sort. Assuming the H/W is not too elaborate I would say it should be less than 16 hours maybe less than 8.


List of 73 messages in thread
TopicAuthorDate
ATMEL AT89C52 Help?            01/01/70 00:00      
   Info            01/01/70 00:00      
      you are ignoring \'the standard\' and the fast            01/01/70 00:00      
         Not ignoring            01/01/70 00:00      
            it does not, but            01/01/70 00:00      
      Anyone want to write simple program for chip for u            01/01/70 00:00      
         \"a few hours\"???            01/01/70 00:00      
         No as simple as you may think            01/01/70 00:00      
            reply            01/01/70 00:00      
               Let's start at the beginning            01/01/70 00:00      
   A Serial Flash chip would be easier            01/01/70 00:00      
   Specification?            01/01/70 00:00      
      what about a "community project"?            01/01/70 00:00      
         Has anyone offered complete C++ for 805x?            01/01/70 00:00      
            yes??            01/01/70 00:00      
               Subset            01/01/70 00:00      
            Would Object Oriented Techniques Be Of Advantage?            01/01/70 00:00      
      Reply specs.            01/01/70 00:00      
         More specifications (and less)            01/01/70 00:00      
            Additional specs. Can you do it?            01/01/70 00:00      
               16 temperature inputs, relay outputs.            01/01/70 00:00      
                  problem is in software            01/01/70 00:00      
                     Lets first choose a chip.            01/01/70 00:00      
                        how many are you going to make?            01/01/70 00:00      
                        It is not just a voltage            01/01/70 00:00      
                  We want to keep it simple            01/01/70 00:00      
         MicroManagement ...            01/01/70 00:00      
         Narrowing it down            01/01/70 00:00      
            More specs again            01/01/70 00:00      
               ATMEL AT89C52            01/01/70 00:00      
                  More hw info needed            01/01/70 00:00      
                     Ok. thanks            01/01/70 00:00      
                        Don't assume. Don't "let's say". Go specific!            01/01/70 00:00      
                  dtraight from the horses mouth            01/01/70 00:00      
               Be Specific            01/01/70 00:00      
            shameless self-advertisement            01/01/70 00:00      
               Hi Jan, some user guide?            01/01/70 00:00      
                  documentation... is always a pain... ;-)            01/01/70 00:00      
                     sometimes "hobby projects" are better off            01/01/70 00:00      
                        what's that?            01/01/70 00:00      
                           a techwriter is            01/01/70 00:00      
                              oh I see            01/01/70 00:00      
                           The REAL issue with documentation            01/01/70 00:00      
                              ever done a hobby project, Richard? ;-)            01/01/70 00:00      
                                 not since the '60's ... well, maybe the '70's            01/01/70 00:00      
                                    well, IMHO, hobby projects are exactly the opposite...            01/01/70 00:00      
                                       remember the reference to Ultramon51?            01/01/70 00:00      
                                          the reward of hobbyist            01/01/70 00:00      
                                             the hobbyist does not need formal documents            01/01/70 00:00      
                                                hobbyist????            01/01/70 00:00      
                                             hobbyist - beginner            01/01/70 00:00      
                                                It's a tradeoff            01/01/70 00:00      
                                             Target goals and check lists            01/01/70 00:00      
                              naah            01/01/70 00:00      
                                 Smaller companies have to run fast            01/01/70 00:00      
                                    the sad thing is            01/01/70 00:00      
                                       Progress            01/01/70 00:00      
                     program interpreted from i2c eeprom?            01/01/70 00:00      
                        possible, but why?            01/01/70 00:00      
                           Waiting for first proposal for whole project?            01/01/70 00:00      
                              Waiting for complete and precise requirements            01/01/70 00:00      
                                 Lets keep on track.            01/01/70 00:00      
                                    A joke?            01/01/70 00:00      
                                       Well said            01/01/70 00:00      
                                       FOR SHAME !!!            01/01/70 00:00      
                                          Taunting?            01/01/70 00:00      
                                          You asked            01/01/70 00:00      
                                          There are AND gates that might work            01/01/70 00:00      
                                             Posible            01/01/70 00:00      
                                                Well ... depending on the relay ...            01/01/70 00:00      
                                                   Useful for others?            01/01/70 00:00      
                                    Off track? Not at all! Tell us what you want ...            01/01/70 00:00      
   shematic 1            01/01/70 00:00      

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