Skip to content

Instantly share code, notes, and snippets.

@Elwell Elwell/doorbot.ino
Last active Nov 7, 2016

Embed
What would you like to do?
New doorbot stuff
/* Artifactory Doorbot - Arduino code to connect to reader
and relays.
Andrew Elwell <Amdrew.Elwell@gmail.com>
Nov 2016
*/
/* Hardware Config - Via IRC with Lt_Lemming
* "I've not done the diagram yet, been too busy building it
* RFID is soft serial on Pin 2
* button on the box is pulled high on Pin 3 via 10K resistor
* Relays are 8, 9, 10 & 11
* pins 4 and 5 now wired for door with a common 5v pulled up via 10k resistor
* so one should always be high, and if both go low we know something is wrong"
*
* http://gerblook.org/pcb/Vx2DYUBo5HQAF4LjZUSib3
*/
const int RFID = 2;
const int Bell = 3;
const int DoorA = 4;
const int DoorB = 5;
const int Relay1 = 8; // doorstrike
const int Relay2 = 9;
const int Relay3 = 10;
const int Relay4 = 11;
#include <SoftwareSerial.h>
SoftwareSerial rfid(RFID, 13); // RX and TX - RFID is read only so use a 'spare' pin for TX
int doorbell = 1 ;
int doorA = 0;
int doorB = 0;
int i;
int incomingByte = 0;
// checkcard() variables
int val = 0;
char code[10];
int bytesread = 0;
void setup() {
rfid.begin(9600); // start serial to RFID reader
Serial.begin(9600); // start serial to Pi
pinMode(Bell, INPUT);
pinMode(DoorA, INPUT);
pinMode(DoorB, INPUT);
pinMode(Relay1, OUTPUT);
pinMode(Relay2, OUTPUT);
pinMode(Relay3, OUTPUT);
pinMode(Relay4, OUTPUT);
}
void readcard() // ideally this would return value?
{
if ((val = rfid.read()) == 2) {
bytesread = 0;
while (bytesread < 10) {
if ( rfid.available() > 0) {
val = rfid.read();
if ((val == 2) || (val == 3)) { // if header or stop bytes before the 10 digit reading
break; // stop reading
}
code[bytesread] = val; // add the digit
bytesread++; // ready to read next digit
}
}
if (bytesread == 10) { // if 10 digit read is complete
Serial.print("RFID: "); // who needs stinkin checksums
Serial.print(code); // print the TAG code
}
bytesread = 0;
}
}
void loop() {
if ( Serial.available() > 0) { // got something on serial line
int inByte = Serial.read();
// single quotes to get the ASCII value for the character.
// ie; 'a' = 97, 'b' = 98, and so forth:
// UPPERCASE: ON, lowercase OFF.
switch (inByte) {
case 'A':
digitalWrite(Relay1, HIGH);
Serial.print("Relay1: ");
Serial.println(digitalRead(Relay1));
break;
case 'a':
digitalWrite(Relay1, LOW);
Serial.print("Relay1: ");
Serial.println(digitalRead(Relay1));
break;
case 'B':
digitalWrite(Relay2, HIGH);
Serial.print("Relay2: ");
Serial.println(digitalRead(Relay2));
break;
case 'b':
digitalWrite(Relay2, LOW);
Serial.print("Relay2: ");
Serial.println(digitalRead(Relay2));
break;
case 'C':
digitalWrite(Relay3, HIGH);
Serial.print("Relay3: ");
Serial.println(digitalRead(Relay3));
break;
case 'c':
digitalWrite(Relay3, LOW);
Serial.print("Relay3: ");
Serial.println(digitalRead(Relay3));
break;
case 'D':
digitalWrite(Relay4, HIGH);
Serial.print("Relay4: ");
Serial.println(digitalRead(Relay4));
break;
case 'd':
digitalWrite(Relay4, LOW);
Serial.print("Relay4: ");
Serial.println(digitalRead(Relay4));
break;
default:
// return state of all relays and inputs:
Serial.println(PINB, BIN);
/* prints say 101011
maps to Rly 4321
So, 4,2,1 are on, 3 is off
*/
Serial.println(PIND, BIN);
}
}
// grab all the digital inputs
doorbell = digitalRead(Bell);
doorA = digitalRead(DoorA);
doorB = digitalRead(DoorB);
//and process
readcard();
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.