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midi, avr, and shielding
Don't worry about shielding the MIDI cable. The bandwidth (31.25Kbaud) is too slow to radiate. Plus the cables themselves usually have a wire braid around the current conducters...
Tuesday, 18 January 2005 - 02:58
MIDI/RS232 dilemna: 2 bauds, 1 uart
I've been working on this same application (PC RS232 to MIDI) for many months off and on. It's not as easy as it first seems. I've tried many approaches, none work completely...
Monday, 17 January 2005 - 09:35
AN313 : PC keyboard + avr ?? need to understand something
Hello, I have been exploring the PC keyboard to AVR interface for about a year. I have attached a file to this message that shows how to decode a keypress into ASCII using AVR...
Sunday, 16 January 2005 - 19:09
PWM to voltage?
If the high level of the pulse train is actually 0.7v for a high, then it could be read directly into the AVR by using the analog compare. Use a 10:1 resistor ratio between VCC-...
Friday, 14 January 2005 - 02:29
Cannot program new Attiny26 with pony-prog
Hello, I use the SP12 programmer for the Tiny26. It works well for both fuses and flash. It will be necessary to rewire the interface connector a little. I don't recommend...
Tuesday, 11 January 2005 - 22:03
Recieve data from a PC via serial port
The easiest way to set data bits high and low from a PC is to use the PC's parallel port. For Windows 98, the port can be programmed directly. Win2000 and XT require a special...
Saturday, 8 January 2005 - 20:59
How do you high voltage serial program an 8 pin SMD Tiny?
An alternative way to make a surface-mound SOIC microcontroller programmer is to have a small piece of copper-clad board and cut out a precise outline for the body of the SOIC to...
Friday, 7 January 2005 - 17:36
Tiny11 expert help?
Here's an assembler file for this application. It took about a half hour to do. It's always more complex than it seems at first. This is the kind of ap that that Tiny11 is...
Thursday, 6 January 2005 - 18:53
need keypad 3x4 source?
Hello, Are you asking us to do a homework assignment for computer class? Anyway, a 'keyboard matrix' algorythm is not complex. Each output port line will have four push...
Thursday, 6 January 2005 - 17:31
"Wolf Whistle" algorithm?
To make a simple tone from an AVR output, connect the output to a small speaker through a resistor say 200 ohms (5v/200ohms --20mA; actually less current due to the speaker's AC...
Tuesday, 4 January 2005 - 16:33
ICE200 difficulties and questions
Well, the "no monitor" message seemed to come from not having grounded the capacitors that are connected to the 4MHz crystal that is used for the system clock. The target system...
Monday, 3 January 2005 - 22:39
budget oscilliscope
To view and store signals 20KHz or less there are several good PC programs that use the sound card digitizing line inputs. Try a Google search. These scope programs also require...
Monday, 3 January 2005 - 19:17

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