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Hi I'm a n00b - Recommendations on getting started
I started with nothing more than a mega8, a couple of caps a few resistors and a breadboard. Step by step instructions can be found at www.opend.co.za . I hope this is helpful....
Friday, 5 September 2008 - 15:17
current c instruction address
Thats the beauty of GCC. one compiler for all.
Wednesday, 28 May 2008 - 11:18
current c instruction address
Hi js. Thanks. This is for quick on the go Program counter capture. Just put one line of code down and the address is recorded. This is for trace debuging code. Useful as after an...
Wednesday, 28 May 2008 - 01:26
current c instruction address
Got it! This multi line macro gets program counter wherever breadcrumbs_mark is placed and passes it on as a 32bit unsigned integer to function breadcrumbs_p_x #define...
Wednesday, 28 May 2008 - 01:17
I'm thinking of building a cable checker / tester?
Ive got one. Mega8. Auto Learning. Expandable as far as you like using 4094 shift registers and uln2003 output drivers. I Will have to do some scratching for data though, it has...
Wednesday, 27 February 2008 - 21:23
ATmega48 programming - what am I missing?
A DIY programmer can be as little as 3 resistors and a capacitor if you want to program your AVR in circuit. Just use R1,2,3,4 and C1 in this tutorial. http://www.opend.co.za/...
Monday, 14 January 2008 - 09:02
Simple cheap atmega programmer
Go4it wrote:murrayhorn wrote:4 resistors and a printer port cable. A 22pf cap if you want to be polite. http://opend.co.za/tutorials/avr... This design includes a voltage...
Sunday, 12 August 2007 - 13:39
Simple cheap atmega programmer
4 resistors and a printer port cable. A 22pf cap if you want to be polite. http://opend.co.za/tutorials/avr... This design includes a voltage regulator and crystal, but that...
Tuesday, 7 August 2007 - 15:51
Using AVR for DC/DC buck converter.
For an implementation of closed loop pwm firmware, check out http://www.opend.co.za/hardware/... . The circuit does not deliver enough current for your design, and as a battery...
Tuesday, 13 February 2007 - 09:57
Using Multi-Processor Mode with RS-485 and PC's
From my experience 9bit 485 comms driven from the ap PC is just tempting Murphy. The reception of the 9th bit requires your ap to get to the byte before the next one comes in and...
Sunday, 16 July 2006 - 11:03
Dirty tricks with AVR
I agree with fpga42, definitely use a sync design. The compilers usually optimize those "delay gates" right out. Buffer the data in the PGA and read it out at your leasure. Or...
Tuesday, 30 May 2006 - 17:32
Multiple avr µC that works together?
I often use the SLIP protocol for multi processor comms. reasons being : 1. The implementation is simple, it adds an average 1% and an overhead of 2 bytes to your comms. 2. CPU...
Monday, 8 May 2006 - 12:45

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