Using both Ethernet Shield and Relay Shield on the same arduino mega

-

hello,

i want plug 2 shields on arduino mega:

http://www.arduino.org/products/shields/arduino-ethernet-shield-2
http://www.arduino.org/products/shields/arduino-4-relays-shield

the relay shield on top.

i want use i/o pins too.

my question is: pins not used ethrenet , relay shields. want know pins free other basic i/o

thanks

the information in links posted....


Arduino Forum > Using Arduino > Microcontrollers > Using both Ethernet Shield and Relay Shield on the same arduino mega


arduino

Comments

Post a Comment

Popular posts from this blog

Help with codes to add 1 more shift register and add more to matrix LED

-
hi im working on 8x10 matrix leds , successful @ using guide http://www.instructables.com/id/810-led-matrix-with-4017/ using 4017 , 74hc595 now want expand matrix 16x10. i connected , worked added 74hc595 control second 8x10. my problem want display text using both 8x10 im using code guide , modified think doesnt work code: [select] #define someshape    {b0100001001000010,b1110011101000010,b0100001001000010,b0000000001000010,b0001100001000010,b0001100001000010,b1000000101000010,b1000000101000010,b0100001001000010,b0011110001000010  }    #define all     {b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111  }                        #define someshape2   {b0100001001000010,b1110011101000010,b0100001001000010,b0000000001000010,b000110000100001...
Read more

tcp client

-
i'm using arduino uno , w5100 ethernet shield. i'm trying connect ethernet shield software downloaded ( sockettest v3.00) communication between server (sockettest) , shield (client).the shield jack connected router. created server under ip address of laptop. uses telnet client example can't connect server on sockettest. first time i'm doing tcp/ip , had done similar project or guide me on this. sockettest - http://sockettest.sourceforge.net/ uno - https://store.arduino.cc/arduino-uno-rev3 ethernet shield - http://www.hobbytronics.co.uk/arduino-wiznet-shield here code -------------------- code: [select] #include <spi.h> #include <ethernet.h> byte mac[] = {   0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed }; ipaddress ip(192, 168, 1, 220);// shield ip ipaddress server(192, 168, 1, 37); // computer ip ethernetclient client; void setup() {   // start ethernet connection:   ethernet.begin(mac, ip);// open serial communications , wait port open: ...
Read more

Can't read sms using Thinker A7 communicate with Arduino

-
Image
hi guy i'm trying communicate ai thinker a7 module. on arduino uno r3 im using pin 7,pin 8 connect utxd & uaxd. when send sms phone module thinker 7, use arduino read sms. my code bellow code: [select] #include <softwareserial.h> #include <string.h> char incoming_char = 0; softwareserial cell(7, 8); //my shield uses these pins software serial. void setup() {  serial.begin(115200);  cell.begin(115200);  delay(2000);  serial.print("starting modem communication...");  delay(12000);  serial.print("ok\nintroduce @ commands:\n"); } void loop() {  if(cell.available() > 0)  {    incoming_char=cell.read();        if(incoming_char=="a"){      serial.println("content of sms a"); //if sms contains "#" arduino looks commands follow.      serial.println(incoming_char);    }    else    { ...
Read more