# Arduino Webserver with Temperature Monitor / Control **URL:** \ **Category:** Showcase\ **Created:** [July 16, 2012, 2:56am UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014 "2012-07-16T02:56:56Z")\ **Posts on this page:** 20\ **Page:** 2

**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [February 3, 2013, 11:30am UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/21 "2013-02-03T11:30:44Z")

Hello! Very interesting thermostat you get. Have a question. As I understand it 18b20 address must be specified manually in the sketch, how to connect the sensor to a different address, without flashing? ---

**Author:** ![alvydas001](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/alvydas001/32/1167267_2.png) [@alvydas001](https://forum.arduino.cc/u/alvydas001)\ **Post date:** [February 13, 2013, 5:31pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/22 "2013-02-13T17:31:29Z")

Please read there: > **[Arduino - Networked Temperature Monitor](https://www.homebrewtalk.com/threads/arduino-networked-temperature-monitor.340294/page-2)** > > The RPi is a fully enabled (I'm using Adafruit's I2C-enabled Debian distro) Linux computer that is very easy to configure as a full LAMP (Linux/Apache/Mysql/PHP or Python) webserver, and at $35-$40, it's the same price or less than an ethernet... ---

**Author:** ![Btguillaume](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Btguillaume](https://forum.arduino.cc/u/Btguillaume)\ **Post date:** [February 14, 2013, 3:13am UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/23 "2013-02-14T03:13:00Z")

Is this code source work if I only copy/pastre to my enc28j60 ethenet shield? Does this thermostat can send email if the temperature range is below or under the value I preset? Im very interrested to reproduce this thing, it's awsome! thanks for sharing and let me know! It could be cool to share an HOW TO for beginners like me 🙂 ---

**Author:** ![alvydas001](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/alvydas001/32/1167267_2.png) [@alvydas001](https://forum.arduino.cc/u/alvydas001)\ **Post date:** [February 14, 2013, 10:16am UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/24 "2013-02-14T10:16:34Z")

I think that e-mail can send only arduino mega 2560, arduino uno insufficient memory, if you want to supplement the program [http://www.lucadentella.it/en/2012/12/16/enc28j60-e-arduino-12/](http://www.lucadentella.it/en/2012/12/16/enc28j60-e-arduino-12/), [https://raw.github.com/lucadentella/enc28j60\_tutorial/master/\_12\_SkebbySMS/\_12\_SkebbySMS.ino](https://raw.github.com/lucadentella/enc28j60_tutorial/master/_12_SkebbySMS/_12_SkebbySMS.ino) [SMTP protocol problems · Issue #65 · njh/EtherCard · GitHub](https://github.com/jcw/ethercard/issues/65) [http://forum.jeelabs.net/comment/9920#comment-9920](http://forum.jeelabs.net/comment/9920#comment-9920) ---

**Author:** ![Btguillaume](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Btguillaume](https://forum.arduino.cc/u/Btguillaume)\ **Post date:** [February 14, 2013, 12:41pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/25 "2013-02-14T12:41:52Z")

Okay i think that would help. I'm realy bad in programming, My project is to take the entire web temperature fo enc28j60 code and modify it to send email when the value is under or over the preset. Thanks for help and shared links! ---

**Author:** ![alvydas001](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/alvydas001/32/1167267_2.png) [@alvydas001](https://forum.arduino.cc/u/alvydas001)\ **Post date:** [February 14, 2013, 12:57pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/26 "2013-02-14T12:57:38Z")

You really need a more powerful Arduino with more RAM (mega2560) or can try [http://ksduino.org](http://ksduino.org), [http://open.sen.se/](http://open.sen.se/), [https://www.thingspeak.com/](https://www.thingspeak.com/) [http://exosite.com/products/portals](http://exosite.com/products/portals) cloud. Ksduino and [http://www.pushingbox.com/](http://www.pushingbox.com/) support ENC28J60. ---

**Author:** ![Btguillaume](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Btguillaume](https://forum.arduino.cc/u/Btguillaume)\ **Post date:** [February 14, 2013, 4:31pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/27 "2013-02-14T16:31:29Z")

> alvydas001: > You really need a more powerful Arduino with more RAM (mega2560) or can try [ksduino.org](http://ksduino.org), [http://open.sen.se/](http://open.sen.se/), [https://www.thingspeak.com/](https://www.thingspeak.com/) [http://exosite.com/products/portals](http://exosite.com/products/portals) cloud. Ksduino and [http://www.pushingbox.com/](http://www.pushingbox.com/) support ENC28J60. Duemilanove + ethernetshield enc28j60 should be a great setup? ---

**Author:** ![alvydas001](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/alvydas001/32/1167267_2.png) [@alvydas001](https://forum.arduino.cc/u/alvydas001)\ **Post date:** [February 15, 2013, 7:36am UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/28 "2013-02-15T07:36:14Z")

The full terms of reference in the scene! Otherwise, there is nothing you will not respond. ---

**Author:** ![Btguillaume](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Btguillaume](https://forum.arduino.cc/u/Btguillaume)\ **Post date:** [February 15, 2013, 1:52pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/29 "2013-02-15T13:52:46Z")

> alvydas001: > The full terms of reference in the scene! > Otherwise, there is nothing you will not respond. Sry for my bad english... I don't understand.... :\< ---

**Author:** ![alvydas001](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/alvydas001/32/1167267_2.png) [@alvydas001](https://forum.arduino.cc/u/alvydas001)\ **Post date:** [February 15, 2013, 2:21pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/30 "2013-02-15T14:21:36Z")

My English is very bad, too 🙂 have to say what you wish to do so, must complete the task conditions, it is difficult to advise otherwise. ---

**Author:** ![Btguillaume](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Btguillaume](https://forum.arduino.cc/u/Btguillaume)\ **Post date:** [February 15, 2013, 5:50pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/31 "2013-02-15T17:50:35Z")

Speak French? ---

**Author:** ![Btguillaume](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Btguillaume](https://forum.arduino.cc/u/Btguillaume)\ **Post date:** [February 16, 2013, 4:13pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/32 "2013-02-16T16:13:47Z")

Okay, so I have the code right here : ```cpp #include "etherShield.h" // please modify the following two lines. mac and ip have to be unique // in your local area network. You can not have the same numbers in // two devices: static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x24}; static uint8_t myip[4] = {192,168,1,15}; static char baseurl[]="http://192.168.1.15/"; static uint16_t mywwwport =80; // listen port for tcp/www (max range 1-254) // or on a different port: //static char baseurl[]="http://10.0.0.24:88/"; //static uint16_t mywwwport =88; // listen port for tcp/www (max range 1-254) // #define BUFFER_SIZE 500 static uint8_t buf[BUFFER_SIZE+1]; #define STR_BUFFER_SIZE 22 static char strbuf[STR_BUFFER_SIZE+1]; EtherShield es=EtherShield(); // prepare the webpage by writing the data to the tcp send buffer uint16_t print_webpage(uint8_t *buf); int8_t analyse_cmd(char *str); // get current temperature #define TEMP_PIN 3 void getCurrentTemp( int *sign, int *whole, int *fract); void setup(){ /*initialize enc28j60*/ es.ES_enc28j60Init(mymac); es.ES_enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz delay(10); /* Magjack leds configuration, see enc28j60 datasheet, page 11 */ // LEDA=greed LEDB=yellow // // 0x880 is PHLCON LEDB=on, LEDA=on // enc28j60PhyWrite(PHLCON,0b0000 1000 1000 00 00); es.ES_enc28j60PhyWrite(PHLCON,0x880); delay(500); // // 0x990 is PHLCON LEDB=off, LEDA=off // enc28j60PhyWrite(PHLCON,0b0000 1001 1001 00 00); es.ES_enc28j60PhyWrite(PHLCON,0x990); delay(500); // // 0x880 is PHLCON LEDB=on, LEDA=on // enc28j60PhyWrite(PHLCON,0b0000 1000 1000 00 00); es.ES_enc28j60PhyWrite(PHLCON,0x880); delay(500); // // 0x990 is PHLCON LEDB=off, LEDA=off // enc28j60PhyWrite(PHLCON,0b0000 1001 1001 00 00); es.ES_enc28j60PhyWrite(PHLCON,0x990); delay(500); // // 0x476 is PHLCON LEDA=links status, LEDB=receive/transmit // enc28j60PhyWrite(PHLCON,0b0000 0100 0111 01 10); es.ES_enc28j60PhyWrite(PHLCON,0x476); delay(100); //init the ethernet/ip layer: es.ES_init_ip_arp_udp_tcp(mymac,myip,80); // initialize DS18B20 datapin digitalWrite(TEMP_PIN, LOW); pinMode(TEMP_PIN, INPUT); // sets the digital pin as input (logic 1) } void loop(){ uint16_t plen, dat_p; int8_t cmd; plen = es.ES_enc28j60PacketReceive(BUFFER_SIZE, buf); /*plen will ne unequal to zero if there is a valid packet (without crc error) */ if(plen!=0){ // arp is broadcast if unknown but a host may also verify the mac address by sending it to a unicast address. if(es.ES_eth_type_is_arp_and_my_ip(buf,plen)){ es.ES_make_arp_answer_from_request(buf); return; } // check if ip packets are for us: if(es.ES_eth_type_is_ip_and_my_ip(buf,plen)==0){ return; } if(buf[IP_PROTO_P]==IP_PROTO_ICMP_V && buf[ICMP_TYPE_P]==ICMP_TYPE_ECHOREQUEST_V){ es.ES_make_echo_reply_from_request(buf,plen); return; } // tcp port www start, compare only the lower byte if (buf[IP_PROTO_P]==IP_PROTO_TCP_V&&buf[TCP_DST_PORT_H_P]==0&&buf[TCP_DST_PORT_L_P]==mywwwport){ if (buf[TCP_FLAGS_P] & TCP_FLAGS_SYN_V){ es.ES_make_tcp_synack_from_syn(buf); // make_tcp_synack_from_syn does already send the syn,ack return; } if (buf[TCP_FLAGS_P] & TCP_FLAGS_ACK_V){ es.ES_init_len_info(buf); // init some data structures dat_p=es.ES_get_tcp_data_pointer(); if (dat_p==0){ // we can possibly have no data, just ack: if (buf[TCP_FLAGS_P] & TCP_FLAGS_FIN_V){ es.ES_make_tcp_ack_from_any(buf); } return; } if (strncmp("GET ",(char *)&(buf[dat_p]),4)!=0){ // head, post and other methods for possible status codes see: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html plen=es.ES_fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n

200 OK

")); goto SENDTCP; } ``` ---

**Author:** ![Btguillaume](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Btguillaume](https://forum.arduino.cc/u/Btguillaume)\ **Post date:** [February 16, 2013, 4:21pm UTC](https://forum.arduino.cc/t/arduino-webserver-with-temperature-monitor-control/112014/33 "2013-02-16T16:21:48Z")

```cpp if (strncmp("/ ",(char *)&(buf[dat_p+4]),2)==0){ plen=print_webpage(buf); goto SENDTCP; } cmd=analyse_cmd((char *)&(buf[dat_p+5])); if (cmd==1){ plen=print_webpage(buf); } SENDTCP: es.ES_make_tcp_ack_from_any(buf); // send ack for http get es.ES_make_tcp_ack_with_data(buf,plen); // send data } } } } // The returned value is stored in the global var strbuf uint8_t find_key_val(char *str,char *key) { uint8_t found=0; uint8_t i=0; char *kp; kp=key; while(*str && *str!=' ' && found==0){ if (*str == *kp){ kp++; if (*kp == '\0'){ str++; kp=key; if (*str == '='){ found=1; } } }else{ kp=key; } str++; } if (found==1){ // copy the value to a buffer and terminate it with '\0' while(*str && *str!=' ' && *str!='&' && i 0x2f){ // is a ASCII number, return it r=(*strbuf-0x30); } } return r; } uint16_t print_webpage(uint8_t *buf) { char temp_string[10]; int i=0; //char *temp_string="100"; uint16_t plen; getCurrentTemp(temp_string); plen=es.ES_fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n")); plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("