Help needed for microcontroller based project.

adam · 2006-01-07T12:29:10+00:00

Hi Group,We are a group of four B.E students studying in M.h.S.S. COE, Mumbai,India. We writing to you to seek some help and guidance. Since this isour first microcontroller based project, we are unaware about thepracticalities and methodologies that go into it.In our project, we have decided to use the following:AT89C52/AT89S52: MICROCONTROLLERDS1307: RTCMAX232/MAX485: LEVEL CONVERTERAT24C1024: SERIAL EEPROM4051B: 8:1 ANALOG MUXIC 741/ LM324: COMPARATORLOGIC: 8 channels connected to the MUX, depending on which input isenables, MUX selects it and sends it to the COMPARATOR. The secondinput to comparator is a reference voltage. Comparator's output to port1.0. Ports 1.1,1.2,1.3 as selects lines to MUX. Ports 1.4,1.5 forintefacing with memory. Ports 3.0,3.1 as RXD and TXD. Ports 3.2,3.3,3.4for interfacing with RTC.Using select lines of MUX , we wish to determine which channel isenabled.using RTC we wish to sore the real time and pin number in EEPROM. UsingRS232C we wish to display this data on a PC.We are facing the following queries:1. Is our logic correct? Are all the Ic's comaptible?2. Useful tips from your side.We are in the stage of preparing the circuit diagram and there are manydoubts which occur. We would like you to suggest software forpreparing schematics and layout. Is there some software available whichdirectly converts schematic to layout? Please give names.The next challenge is the software side. In our syllabus we have learntC/C++. Since you have mastered this, please guide us how to write theprograms and routines and recommend compliers, simulators and othersoftware related to programming. Are programs and codes available onnet? If yes, Please give the resource locations or websites.Any help will be really encouraging and greatly appreicated by us. Welook forward for some positive response.Last but not the least, we wish you a very happy and prosperous newyear.Thanking you and with best regards,Adam Mashraqui.(on behalf of the group)

Jan 07, 2006 63 Replies

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Tim Wescott 12 years ago

Strike the "Indian" and you'll encompass the whole world.

Sometimes people (even 'mericans -- trust me on this, I was a teacher's assistant when I was in grad school) manage to get through school without having this detail impressed on them. I suspect that people in American schools are better at this now, and most folks can turn to their friends (or their frat, if they're so inclined) -- but some people are just born followers, and have trouble when they're thrust into a leadership position like this.

Tim Wescott Wescott Design Services http://www.wescottdesign.com

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RobertMacy 12 years ago

Doesn't need to understand, just ask the questions: What are you going to do? How long will it take you? How much will it cost? But, it does help to learn how to 'hold' people to the answers that he/she gets. Appropriately 'yelling' You only did that! You took far too long! and Get THAT cost down!

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Sylvia Else 12 years ago

For a manager, understanding can be a hindrance. How is a manager suppposed to ask you to reduce your estimate if he understands that that really makes no sense.

Also, how is a manager to ask (as one did of me), for an estimate of what the estimate will be, if he has the remotest understanding of what an estimate is?

Sylvia.

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Ralph Barone 12 years ago

Then go home.

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