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both of them do the same thing in different ways, the second one for ex has put a delay instead of checking for eoc which i tried and it gave me random results, and even if it works i would have a greater delay problem since i am trying to run a led matrix display with the value i receive from...
need something to work on, like which adc u wanna use and which mcu, besides need something that you have worked so far(considering this isnt a copy pasting site for that purpose u can use google)
well i thought OE might be the problem but the datasheet said that OE is high only for giving output so i thought it might be for buffer only as enable signal, besides many people who have used this chip for continuous conversion have kept OE always high and didn't seem to have any problem for...
eoc=1 at the *end* of conversion just like it was at start of it, so if i want to check there is a low to high pulse wouldnt i be checking first for the eoc to go low then check for eoc to go high, the lines 11 and 12 do just that, 11 keeps running till eoc goes 0 then 12 keeps running till eoc...
hello there i am trying to use the adc0808 with the microcontroller 8051 for a bigger project, so i wanted to test if i get correct output from the adc. To do this i made a temporary circuit and connected data pins to p3, eoc sc clock and ale to the port 0(used pull up too) and i am using only 1...
edit: nevermind that i got the problem and if anyone who has same problem you can solve it by flashing the sequence for more time period for single sequence then move the sequence and again display it, try not to include delay when flashing and just keep flashing it continuously
please someone help need to complete this and start another project
i used uc to 74154 to udn2981 to led to uln2003 to uc and nothing was glowing
then i tried uc to 4514 to udn2981 to led to uln2003 to uc and it worked in the same dim way as it was before
what now
yea man i am thinking that might be the problem, i didnt have the parts today so i am waiting to do remaining tomorrow by using 2x74154 then to 4xuln2003 and then to led matrix with common cathode columns and the common anode rows going to udn2981 then to the port of controller....just last two...
8052 has internal pull up resistors on p1 p2 and p3 and i am using only p1, p2
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this is the relevant part of the circuit if u need(instead of the 74573 i am using uln2803, it was used only for simulation since proteus doesnt do uln2803 properly)
Hello guys this is my first post here, since long time i have seen many problems answered on this forum so here i am unable to solve a little problem for my led matrix display, please help if you can :)
I am using 8052 for displaying a string of letters on an led matrix that i made on dotted...
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