Post Created date
Driving 3 digits LED display
A led driver requires just one resistor. But seriously.. making a circuit without a single resistor ? why ?
Wednesday, 13 February 2008 - 15:28
Driving 3 digits LED display
1 : If you can give the LED's the correct voltage, you can forget the resistors, but if no, you NEED them or you'll kill the chip. 2 : The frequency should be above 50Hz, so the...
Wednesday, 13 February 2008 - 08:56
SPI between ATmega2560 and ATmega128
The SS pin is good enough explained in the datasheet. It is like the "activation" pin for the SPI comm. Before transmitting from the master, set SS pin low(0), the slave will then...
Tuesday, 12 February 2008 - 20:12
Interfacing CGM12864B with AVR
He, no can't seem to find anything usefull info about the Vee.. Just said that it is the power for the LCD...
Tuesday, 12 February 2008 - 19:51
Interfacing CGM12864B with AVR
you have datasheet for your part ? give me link
Tuesday, 12 February 2008 - 12:53
Interfacing CGM12864B with AVR
Well just thought I should mention, DO NOT TRY to drive the background lightning through the AVR since if normally draws alot of current. Just a warning, look in the datasheet...
Tuesday, 12 February 2008 - 11:59
Help on AT86Rf230
Look at Meshnetics, they have great modules that combine the zigbee IC with mega121 in one module. You can select between onboard antenna or external. Pretty good prices
Tuesday, 12 February 2008 - 01:06
Interrupt occurance inside an ISR
It's easy, when the first ISR occurs, the CPU jumps to that location, when the other ISR ocurs, it jumps to that one, and then returns to the firste one after completing the...
Monday, 11 February 2008 - 11:10
delay macros vs timer
Quote:But if you have other interrupts and one of them happens during a delay, then the delay becomes inaccurate by an unknown amount. Also true, forgot to mention :)
Sunday, 10 February 2008 - 01:02
delay macros vs timer
The delay macro will give you a goood precision of your delays, since you have to specify te clock frequency and it is taken into considerations. I use timers almost every time...
Saturday, 9 February 2008 - 23:10
Assembly Help
1 : I'd guess so, you just need a C compiler 2 : Guess it would be ugly, try using RAND in C, and see what the compiler does. 3 : an IF you make with for example the CMP ( compare...
Saturday, 9 February 2008 - 14:59
EEPROM read/writ life
With that write interval, your circuits will be fossils before your EEPROM wears out :)
Saturday, 9 February 2008 - 13:23