Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
At the begining i just wanna see the data to be send to the receiver by sound,
but at the end, of course i want to achive error free data over voice communication.
Thanks for the recommandation about irda,
i had searched infrared about 2-3 years ago and
i had made a working example, i think i...
I searched the modem chips but i think it is not the solution for me.
If i understood modem chips' operation correctly,
they can do much more complicated operations than just sending data over sound.
What i wanna do is:
For example;
on one hand, i have a message board, maybe graphical,
i will...
I wanna send data over audio,
i am searching methods for this but
if there is any readily available solution for this purpuse i can go for it.
Higher bitrates are more appretiated.
I need at least 8 kBps.
It is a hobby project,
i strongly wanna use and learn data over voice method.
I wanna say something not quite interested about the main subject. In one of the forum a guy was trying to find a efficent way to supply his battery operated microcontroller circuit using lcd to show date and time, he was using 7805 to supply 5 V to his circuit and I said to him " you can use...
As if I read in the SD specs.
Could it be because I am just using inline current limiting resisters (5k) for level translation ? (5v - 3.3V)
You must be capable of supplying at least 100 mA for card to read write properly but you just have to do it for VDD pin, for data pins you may use...
Nowadays I am searching information about using sd cards in my project, I will also use 16f877A in my project, as you mentioned about the problem of 512 bytes and I think another way to solve this problem, my solution is;
Up to 8K x 14 words of FLASH Program Memory,
Up to 368 x 8 bytes of...
Sır ericgibbs I wanna specially thank you for your great help, Finally I found the problem about Chip Erase and my circuit yes there is a problem about programming specification of 16F87XA chip erase sequence but in addition to this like you and others said there coluld be a problem about...
Yes I have read page 8 more than 50 times and I have tried what it says more than 100 times but it did not make my programmer worked. as I said in my first message programming specification is wrong or missing this is not my conclusion other programmers says also this...
if you wanna show "All Bulk Erase operations must take place with VDD between 4.5-5.5V." there is only thing about power supply, and also "Flash Memory Programming Specification 39589C" 16f877A 's programming specification says same thing so I learn how I can build a programmer from this...
I measure the voltages but because of programming algorithm is happening very fast I can not be sure about measurements, I have tried modifying program algorithm to slow motion for example I have apply 1 second vpp and vdd programming voltages and I have measured in these conditions under these...
But electrical specification does not allow Vpp higher than 13.5 V. Does not 13.6v to 14v cause any problem, I have already lost one one my pic due to the misvoltage.
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