Bluetooth 2 Mega 2560 Cards / LDR and LED

folks, have project have been working on. able attach led (pin13) , ldr (pina) on same board , make work - when light on ldr, led off , vice versa. trying place led on 1 mega card , ldr on separate mega card , have them communicate through bluetooth module connected 5v, gnd, rx , tx pins on both cards. code bluetooth modules completed using @ commands in com1 window setting 1 master , other slave. below have submitted code have been trying confused. submitted photo of schematic.

led card

code: [select]

const int ledpin = 13;

void setup() {
   serial.begin(38400); //my understanding sets baud rate
   pinmode(ledpin, output); //this should initialize led output
}

void loop() {
   if (ldrstatus <= 300) {
      digitalwrite(ledpin, high); //turns led on
      serial.println("ldr dark, led on"); //writes out message in window
}
   esle {
      digitalwrite(ledpin, low); //turns led off
      serial.println("off"); //writes out message in window
}


ldr card

code: [select]

const int ldrpin = a0;

void setup() {
   serial.begin(38400); //my understanding sets baud rate
   pinmode(ldrpin, input); //this should initialize ldr input
}

void loop() {
   int ldrstatus = analogread(ldrpin); //reads status of ldr value




i confused need go here. understand bluetooth modules connecting 2 cards together. week old when comes arduino. again, can make work on single card not sure when use two. assistance appreciates.

hi there happy new year  you.


see before going coding have first configure hc05 in master , slave mode.

if need feel free contact me on

techtidda@gmail.com

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