Post Created date
Modbus timing!
The 3.5 character idle time was specified years ago as a way of making the job of a slave controller easier, it basically works like this. 1. Controller recieves a byte, if it...
Monday, 2 March 2009 - 13:58
How to used two ATmega 128s Simultaneously....??
I've not used a 128, but if you are sure the chip is not broken, try using low clock speed programming option. Since if it's not got fuse settings for external clock or using...
Sunday, 22 February 2009 - 15:51
AVRGCC with MS VisualStudio as IDE?
see thread https://www.avrfreaks.net/index.p... I myself want to give this a try using VS2008, and try get symbol look-up etc.. all working. As a part-time C# user using lots of...
Thursday, 19 February 2009 - 21:44
Programming using USBasp and avrdude
You will get intermittent results if the cable from the asp to the target is longer than about 15cm and not properly constructed. (I.e. grounds in the correct place behind the...
Wednesday, 14 January 2009 - 22:25
Interfacing a 3X4 keypad with attiny2313
Neat code, thanks. I also thought of the analogue approach, and agree, the downside is that the key-push resistance is in the area of 150 to 190 ohms (within the 200 Ohm maximum...
Saturday, 10 January 2009 - 14:04
ExpressPCB schematic custom files
Thanks, I have logged into the Yahoo group, and even found n1ist files which helped. Expresspcb is not awesome as CAd goes, but it's free; at least I can capture my design and...
Tuesday, 30 December 2008 - 20:01
[MAN][HARD][SOFT] Random Number Generation
Thanks, (reading up on crypto again quickly) - RC4 should compile to about 500 bytes with a 256byte stream. And would serve to slow 50% of hackers. Besides, you never stop the...
Saturday, 27 December 2008 - 21:16
[MAN][HARD][SOFT] Random Number Generation
Not nearly as elegant as your beautiful hardware solution, here's part of a dog-simple generator I wrote for a mega8, and I seed my 256 byte list of numbers with a seed based on...
Friday, 26 December 2008 - 22:01
LCD display
Thanks, this code works like magic. Modified the code slightly LCD_entry_mode_set(); compiles if changed to LCD_command(0x06);//entry mode And I used PORTD on account of...
Friday, 28 November 2008 - 10:03
ATMega 7 segment drive
I have used multiplexing on good loads quite happily, so long as you have 1 pin per segment on the avr, you can drive 20mA no problem. For the common which will take 7 segments (...
Tuesday, 11 November 2008 - 22:32
[TUT] [C] Newbie's Guide to the AVR ADC
as for 10-bit conversions, the code in this thread to add them is wrong (for my GCC). value = ADCL + (ADCH<<8); I fixed it with the above code, by swapping them : which...
Tuesday, 28 October 2008 - 22:29
avrdude fuse bits are ff? but are they?
avrdude> w lf 0 0xe1 >>> w lf 0 0xe1 avrdude (write): error writing 0xe1 at 0x00000, rc=-6 avrdude (write): error writing 0xe1 at 0x00000 cell=0xff I get the same error "rc=-...
Monday, 22 September 2008 - 17:53

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