Programming the ATtiny2313 Microcontroller
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Uploader Comments (Noah1989)
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All Comments (12)
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first think i thought first person soldering
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@Noah1989 big thanks!
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@airwyn11 no, GND can be connected directly. Note that there are multiple Pins connected to GND, using just one of them is OK, though, since they are all connected anyways. Also, any resistor value from 200 to 1000 ohm should be fine. I used 470 ohm because I had lots of them.
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@Noah1989 hey i have one more thing to ask when you said "all connections to the parallel port go thru 470 ohm resistors" do you mean including pin18(GND) as well? Sorry for bugging you again. FYI up to now I'm still waiting for the 2313 :( sob
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@Noah1989 I got it now and working on it. Thanks again for your help.
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@Noah1989 47µFarad of course.. not Ohm (how embarassing...) <.<
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@Noah1989 Hohooo finished! I'll just have to wait for the 2313 to arrive. While tinkering and reviewing I have one question: Is it just right to connect the negative terminal of the capacitor to the GND? I just want to make sure because in another programmer I have seen in its diagram it is the other way around, + terminal of capacitor to GND. I hope you can clarify this up for me. BTW many thanks!
airwyn11 3 months ago
@airwyn11 the capacitor goes as a buffer between GND and VCC, for stabilizing the power. negative to GND of course. If you have seen another programmer that has a capacitor going to GND with it's positive terminal, that's probably a programmer for the serial port, because the serial port works with positive and negative voltages, that capacitor "stores" the negative one. however, this programmer goes to the parallel port which has +5V only.
Noah1989 3 months ago
x2 here!
@Noah1989 if you could only show me more detail in making that target board it would be a big help for a newbie like me. Tnx!
P.S: If you don't mind can you please point me to the website that features this.
airwyn11 4 months ago
@airwyn11
first, here's the website I got the idea from: [i added the link to the description] ; Because the tiny2313 doesn't need much power, I used pins 2, 3, 4 and 5 from the parallel port as a power supply.
second, since I made this whole thing from stuff I had laying around I could make a tutorial so more people can start right away. stay tuned ;-)
Noah1989 4 months ago