Good evening everyone! I have built a device with an Arduino Yun a grove dust sensor and a grove base shield. I have edited the suggested code from grove seed for serial monitoring so as to send my data via an ethernet cable in to google forms. The problem is that the device switches off every 12 hours. Do you have any suggestions on what can i do or what is causing that? Thanks in advance! George Markantonis
Hi George Markantonis
I did a 24 - hour test with the following code.
unsigned long duration;
unsigned long starttime;
unsigned long sampletime_ms = 10000;//sampe 10s ;
unsigned long lowpulseoccupancy = 0;
float ratio = 0;
float concentration = 0;
starttime = millis();//get the current time;
duration = pulseIn(pin, LOW);
lowpulseoccupancy = lowpulseoccupancy+duration;
if ((millis()-starttime) > sampletime_ms)//if the sampel time == 30s
ratio = lowpulseoccupancy/(sampletime_ms10.0); // Integer percentage 0=>100
concentration = 1.1pow(ratio,3)-3.8pow(ratio,2)+520ratio+0.62; // using spec sheet curve
lowpulseoccupancy = 0;
starttime = millis();
Serial.print(“system run time : “);
Thank you very much. I will try to upload the code as soon as possible.
Wow that seems like a very nice device.
Heating and Cooling Markham Appreciate your work.