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Я дико извиняюсю, но кажись тут идет обсуждение "Измеритель параметров полупроводниковых приборов на ATmega8".
А топик посвященный программаторам здесь: http://pro-radio.ru/controllers/4104/
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Я запрограммировал схемы здесь ATmega8 http://electronics-diy.com/avr_programmer.php и пошел без проблем. Вместо этого оно случается, что если я изменю Masor коллектором NPN транзистора с вопросом и не может масу низкого значения резисторов и конденсаторов. Кто-нибудь знает, почему? |
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Dear MND,
better if You will write on english.
Repeat please Your question. |
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Cheeper, насколько я знаю, в английском языке только местоимение I пишется с большой буквы Видимо какое-то фундаментально отличие в психологии У нас я и Вы., у них I. и you |
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Спасибо за замечание  ,
но как-то не приходилось там наблюдать обиженных персонажей если их я называл (хоть и письменно ) "You".
но у меня это действительно, прешло из русского т.е. "Вы". А по теме - я нифига не понял из 2й части сообщения нашего коллеги MND из Румынии. |
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Thanks for your quick response. I have programmed the ATMEGA8 using this programmer http://electronics-diy.com/avr_programmer.php and went without any problems, but it happens that if I measure for example an NPN transistor the emitor and colector pinout are reversed, but not all the time (with the same component), and I can't measure low value resistors and capacitors. Do you know why? I use the last firmware from this forum. |
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First off all: this is not a precise RC meter.
This is very simple and easily repeated tool for quick device checking. I want recomend you to clean your PCB with acetone or any good solvent first.
What FUSEs are programmed?
What PCB are used?
Is a good quality a socket for ATMega ?
What about ceramic capacitor (100nF) on +5V near MCU- present or not?
How you connect a +5V to AVCC, GND to AGND? Just for test - Try to connect +5V directly (without power sw. circuit) to power pins of MCU and LCD. Please remember: In the last rev. of FW is necesary to select a wanted configuration and make a calibration.
But, easyest way is possible to find where is problem - FW or HW: try to write
any old revision of sw (Nov -dec - till mid of jan). Is don't need to adjust or calibrate this old FW.
Regards. |
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I've clean the PCB, I use this fuse settings lfuse = 0xc1hfuse = 0xd9. I use a PCB made by me in Eagle. I assume I have a good quality socket for ATMega. The ceramic 100nF capacitor is near MCU, I connect the AVCC with a 300 uH from VCC, and the AGND is direct connect to GND. I don't change the FW, I use default configuration form the last sw. I don't know how to calibrate!
I've try older version of firmware like you said, but with no results. Any other idea? Thanks |
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ого, форум перешёл на другой язык? |
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777Andrej: ого, форум перешёл на другой язык?
нет , это мы так, дурачимся... MND: I use this fuse settings
there is fuse settings for PONYPROG2000
http://www.pro-radio.ru/measure/8930-74/#2010/03/08/16-48-25 MND: I use the last firmware from this forum.
show me please a FW (date and time of post where FW attached). MND: I don't know how to calibrate!
inside archive attached to this post please look in readme.htm file :
http://www.pro-radio.ru/measure/8930-66/#2010/02/13/09-31-46 MND: I connect the AVCC with a 300 uH from VCC
and 100nF capacitor from AVCC to AGND also present? is it possible to show your PCB there? please in jpeg\gif file.
and how your device work if connect another +5V PSU directly to power pins of MCU?
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