Category Archives: circuits

Since this value is stored even when the Arduino is not powered, you’re going to get a new number each time it’s run.Thanks to Hans for the code./* EEPROM reset checker By Hans Steiner Reads a value from the EEPROM on startup, prints it out, and increments the value then stores it back in EEPROM…. Created 25 Oct. 2007*/ #include <EEPROM.h>int potPin = 5; // select the input pin for the potentiometerint motorPin = 9; // select the pin for the LEDint value = 0; // variable to store the value coming from the sensorint resetCountByte = 36;void setup() { // open the serial port Serial.begin(9600); // read the last value stored in the EEPROM: value = EEPROM.read(resetCountByte); // send it out the serial port: Serial.println(value); // increment it and write it back to the EEOPROM: EEPROM.write(resetCountByte, value + 1); pinMode(motorPin, OUTPUT); // declare the motor as an OUTPUT pinMode(13, OUTPUT); // declare the LED pin as an output digitalWrite(13,HIGH); // turn on the LED}void loop() { // you can do anything you want to here.}
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Recently, I’d been trying to re-program some Atmega168′s for use in Arduino modules, and was having no luck using my AVRISP MkII programmer…. Even more fortunately, Limor Fried has written some nice instructions on the programmer and on installing and running avrdude to program with it.
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