SebastianB2

Hello, you can maybe use the Adafruit Watchdog Library or similar. Or search for " arduino sleep "Greetings

TxD pin to digital 51 and RxD pin to 50 so you have to change the pin in the sketch.Maybe this video on YouTube will help :

I think i made it to receive 2 SMS, I do not use it any more, the house where I used it is sold.casefor 2 SMS you have to make to time events.As an example : // first SMS : if (now.hour() == 8 && now.minute() == 00 && now.second () == 59) { SIM.smsSend(addr, char_array); // thermistor delay(500); SIM.smsSend(addr, char_array1); // DS18B20 }//second SMS :if (now.hour() == 8 && now.minute() == 05 && now.second () == 59) { SIM.smsSend(addr, char_array); // thermistor 2 delay(500); SIM.smsSend(addr, char_array1); // DS18B20 2 }

Yes, I bought the cheapest. The SIM800l modul has only 2g as I know, but that is enough for send sms. The 2g net still operates in Denmark.

Very fine enclosure and a god instructebal.

very very nice and impressing. Greeting from DenmarkGregor

It is hard to recommend a shop or similar, I bought min in Denmark. I have used 125 kHz reader since I already had a lot of key-tags, the blue one in the pictures.But I found one her some are similar to mine at SeeedStudio or if you like build your own I found this : RFID reader works with 125 kHz tagsWith greetings from Denmark Gregor

Hello Ontaelio, yes your scheme is right, sorry to claim your for a mistake. As I work with the mosfet and led strip right now I only found scheme's and program with resistor from gate to ground. But now as I search mosfet with resistor I found a very good explanation about the resistor between gate and arduino pin. http://forum.arduino.cc/index.php?topic=153543.0And yes the pictures I linked to, not my side or the pictures, is not the best and has a big wrongness as you write, the +12V should not go to the Arduino Mega it should had there own powersupply.With kind greetings from DenmarkGregor

Hello, on the N-Channel MOSFET you mad a mistake.the resistor goes this from gate to ground, like her in the link:http://mozmonkey.com/wp-content/uploads/2013/10/fu...In my knowledge.Greetings from denmark