What's the correct processor clock speed?
I picked up an 8 Mhz chip...
In the Arduino IDE...• Click the Tools menu• Click Board• Select the appropriate board
The appropriate board isn't ' Arduino Pro or Pro Mini (3,3V, 8 mhz) w / ATMega 328'?
That should be a reasonable choice.
Can anyone tell me why that is? What am I missing?
Well, it doesn't work. The other option I tested was lillypad with Atmega 328P. "burning" the sketch with either of these boards selected works, the project functions like it should (blinking the right indicator leds, creating the JPEG file in the SD card with the usual size - 45 Kb), but the JPEG file is always corrupted when I try to read it on a computer. The same setup, same sketch but with a chip with an UNO bootloader, a 16 MHz crystal and two 22PF capacitors works just fine and the file created is readable.Can anyone tell me why that is? What am I missing?
I really need help with this. I've been searching all over the web for similar cases but can't find an answer. I know the clock speed afects the number of cicles and transmition speed, but that can't be the case since I had this working a year ago. has anybody ever put a VC0706 working with a 8 MHz atmega 328P?
You say it worked with a 5v 16mhz arduino. And you say it doesn't work with a 3.3v 8mhz arduino (on breadboard). Two things: * You say you're using a breadboard arduino. There are many inaccurate guides which omit the necessary 0.1uf capacitors between Vcc and Gnd and AVcc and Gnd right next to the chip. Omitting these may cause unpredictable instability (including inconsistent behavior between individual chips with identical code on them - process variation can impact sensitivity here), so you should always include them. Debugging an arduino on breadboard that doesn't have these caps is wasting one's time. Generally, you need a 0.1uf ceramic cap between power and ground on any digital IC, unless the manufacturer recommends something else.* You say it worked at 5v/16mhz, not at 3.3v/8mhz, but what if you bootload for 8mhz, but run it at 5v? Does it work? If that fixes it, it points to a power supply problem of some sort.