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mcoster
Joined: 27 Jan 2004
Posts: 57
Helped: 6
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 04 Oct 2004 17:47 Microcontroler circuits and Protoboard. Is it a bad idea ? |
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Hi everybody,
I am making a school project using 8051, ADC, LCD and serial com.
I am making my prototypes using a protoboard. The problem is that i got random errors happening.
I would like to hear from the most experienced ones if these errors can be caused by the protoboard (bad) isolation to high frequencies, since my source code seems to be ok ?
I am using a 12 MHz clock as 8051 clock, my boud rate for the serial port is 2400 bps.
thank you very much.
mcoster
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djalli
Joined: 10 Nov 2001
Posts: 887
Helped: 15
Location: 1600 Pennsylvania Avenue, Washington DC 20500
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| 04 Oct 2004 20:45 Microcontroler circuits and Protoboard. Is it a bad idea ? |
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No protoboard (prototyped breadboard) is not a bad idea. Imagine if you solder things and desolder again for small errors.
How many errors a guy can make?
Later build schematic, draw layout and make it in printed circuit board.
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hugo
Joined: 01 Jan 1970
Posts: 243
Helped: 21
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| 04 Oct 2004 22:23 Re: Microcontroler circuits and Protoboard. Is it a bad idea |
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Hi,
You may check the power supply, whether you have or not decoupling capacitors 10-100nf + 10uF on power rails!!!
Bye
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rkodaira
Joined: 08 Jun 2004
Posts: 332
Helped: 54
Location: Sao Paulo - Brasil
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| 05 Oct 2004 14:32 Re: Microcontroler circuits and Protoboard. Is it a bad idea |
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| When using breadboard (solderless) check for bad contact in the holes (if the breadboard is old and very used) and use short wires. Some friends had problem with the capacitance between contacts what can make the crystal oscillator not work as planned.
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tutx
Joined: 04 Mar 2004
Posts: 149
Helped: 16
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| 05 Oct 2004 18:04 Microcontroler circuits and Protoboard. Is it a bad idea ? |
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In my opinion, when designing an application works with high frequency, it will be better if you use a soldering breadboard.
With prototyped breadboard, sometimes there are some problems with electrical contacts and wiring.
Check you wires and to be sure that all contacts are good !
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