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This Tetris-Clone was assembled from one ATmega8, 240 red LEDs, a few BJTs, a few IC s and some push

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                  <H1>T-Tris</H1>
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                  <P>This Tetris-Clone was assembled from one ATmega8, 240 red 
                  LEDs, a few BJTs, a few IC's and some push-buttons.<BR><BR>If 
                  you want to build something like that,<BR>feel free to use 
                  some parts of this projekt.<BR><BR>If you want to build this 
                  proj. with another AVR,<BR>you schould be aware of following 
                  issue:<BR><BR>You don't have to stick by the given resistor 
                  values,<BR>because they are not critical.<BR>With these values 
                  for the current limiting resistors (150R),<BR>the current 
                  through one LED should be around 19mA.<BR>If one row is 
                  active, the AVR sources 190mA through PortB and 
                  PortD.<BR>According to the datasheet of the ATmega8, the sum 
                  of all IOH,<BR>for ports B and D should not exceed 200mA.<BR>I 
                  optimized for brightness, not for reliability... ;-)<BR>Due to 
                  variations of parameters of your specific AVR,<BR>you might 
                  damage your IC, if you draw to much current from the 
                  AVR.<BR><BR>If your not sure, how to calculate those 
                  things,<BR>it might be a good idea to build a test-circuit on 
                  a breadboard,<BR>to find the best value for these 
                  resistors.<BR><BR></P>
                  <H3>Files</H3>
                  <UL class=nobullet>
                    <LI><A 
                    href="http://www.avrfreaks.net/index.php?module=Freaks%20Files&amp;func=viewFile&amp;id=2494&amp;showinfo=1"><IMG 
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                    href="http://www.avrfreaks.net/index.php?module=Freaks%20Files&amp;func=viewFile&amp;id=2494&amp;showinfo=1">Source-Code</A> 
                    [2.47 KB] (Aug 22, 2007) 
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                    href="http://www.avrfreaks.net/index.php?module=Freaks%20Files&amp;func=viewFile&amp;id=2496&amp;showinfo=1">Pictures</A> 
                    [3468.53 KB] (Aug 22, 2007) 
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                    ( .avi )</A> [6117.12 KB] (Aug 22, 2007) 
                    <LI><A 
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                    href="http://www.avrfreaks.net/index.php?module=Freaks%20Files&amp;func=viewFile&amp;id=2499&amp;showinfo=1">Schematic</A> 
                    [77.87 KB] (Aug 23, 2007) 
                    <LI><A 
                    href="http://www.avrfreaks.net/index.php?module=Freaks%20Files&amp;func=viewFile&amp;id=2500&amp;showinfo=1"><IMG 
                    title="schematic made with OpenOfficeDraw" 
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                    href="http://www.avrfreaks.net/index.php?module=Freaks%20Files&amp;func=viewFile&amp;id=2500&amp;showinfo=1">schematic 
                    made with OpenOfficeDraw</A> [43.25 KB] (Aug 23, 2007) 
                  </LI></UL></DIV>
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                      <TH class=mainheader colSpan=2>Project 
                    details</TH></TR></THEAD>
                    <TBODY>
                    <TR>
                      <TH vAlign=top>Author</TH>
                      <TD vAlign=top><A 
                        href="http://www.avrfreaks.net/index.php?name=PNphpBB2&amp;file=profile&amp;mode=viewprofile&amp;u=120157">Johannes_Treu</A></TD></TR>
                    <TR>
                      <TH vAlign=top>Type</TH>
                      <TD vAlign=top>Complete code with HW</TD></TR>
                    <TR>
                      <TH vAlign=top>Compiler</TH>
                      <TD vAlign=top>WinAVR (GNU GCC)</TD></TR>
                    <TR>
                      <TH vAlign=top>Added</TH>
                      <TD vAlign=top>2007-08-23</TD></TR>
                    <TR>
                      <TH vAlign=top>Downloaded</TH>
                      <TD vAlign=top>141 times</TD></TR>
                    <TR>
                      <TH vAlign=top>Rating</TH>
                      <TD vAlign=top><IMG alt="Rank: 4" 
                        src="AVR Freaks.files/rank4.gif"><BR>(1 ratings)</TD></TR>
                    <TR>
                      <TH vAlign=top>Tags</TH>
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                          <LI><A 
                          href="http://www.avrfreaks.net/index.php?module=Freaks%20Academy&amp;func=viewProjects&amp;tag=AtMega8">AtMega8</A> 
                          <A 
                          href="http://www.avrfreaks.net/index.php?module=FreaksTags&amp;type=admin&amp;func=deleteTag&amp;tag_id=43&amp;item_module=FreaksAcademy&amp;item_type=project&amp;item_id=1071">[x]</A> 

                          <LI><A 
                          href="http://www.avrfreaks.net/index.php?module=Freaks%20Academy&amp;func=viewProjects&amp;tag=fsk">fsk</A> 
                          <A 
                          href="http://www.avrfreaks.net/index.php?module=FreaksTags&amp;type=admin&amp;func=deleteTag&amp;tag_id=924&amp;item_module=FreaksAcademy&amp;item_type=project&amp;item_id=1071">[x]</A> 
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                      <TH class=mainheader colSpan=2>Projects by 
                      Johannes_Treu</TH></TR></THEAD>
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