Post Created date
C code question
Probably want fputs and fgets as well for strings instead of characters. Like turboscrew said, though, if you're trying to do this on an AVR, you'll need some file system on some...
Wednesday, 26 March 2008 - 15:37
Is an JTAGICE mkII necessary ?
If it works, don't fix it =) If you're happy with what you have and don't care about the additional features of the MKII, then why pay the extra price? Like Jay says, though, it's...
Wednesday, 26 March 2008 - 15:34
Controlling a relay from a microcontroller
Yeah, I left out the resistors. There may also need to be one in series with the coil, depending on the voltage required.
Wednesday, 19 March 2008 - 15:42
Controlling a relay from a microcontroller
Simple NPN transistor used as a switch to drive the relay is about as cheap and easy as you can get. Connect the base to the AVR, the emitter to GND and the collector through the...
Wednesday, 19 March 2008 - 06:27
Best place to store a secret key
farang wrote:You guys think in devious ways :mrgreen: Unfortunately the hackers/cheaters/crackers/what-have-you will always find a more devious way to circumvent it =) If you...
Thursday, 13 March 2008 - 16:27
Best place to store a secret key
If you already have the AVR contacting a server to publish results, then can you also have the central server push back new images or chunks of images to the AVR? That way, every...
Wednesday, 12 March 2008 - 21:07
Best place to store a secret key
Do you have more details on the requirements of the key(s) and whether you need to be able to store them or just retrieve them? Are you trying to prevent anyone from reading the...
Wednesday, 12 March 2008 - 17:42
Best place to store a secret key
farang wrote:Schickb, yes, I have lost data from EEPROMs plenty of times. Usually as power goes up or down. I think the situation persists because even the latest controller data...
Monday, 10 March 2008 - 15:19
Best place to store a secret key
zainka wrote:First is to store it in an external secure memory with serial access like atmels cryptomemory But then don't you just have to store the authentication key somewhere...
Monday, 10 March 2008 - 15:13
Non-volatile RAM, RTC, battery, ...
So much space, yes, but not so bad if you were gonna put a battery and a crystal on there yourself anyways. If you're using tiny SMD parts and are going for size, then yes, you...
Thursday, 6 March 2008 - 18:08
Non-volatile RAM, RTC, battery, ...
If you can handle at least a 24-pin package, look at these search results: http://tinyurl.com/34rhw4 They all have RTC, at least 100 bytes NVRam and integrated crystals and...
Wednesday, 5 March 2008 - 17:26
How to increase sampling rate when uC has to deal with ...
Can you post your code for writing to the LCD? If you have a timer interrupt that every time it kicks, it calls an LCD write function, then I assume that's where your issue is, as...
Friday, 29 February 2008 - 17:59

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