need help.. today I got closer to my project, I have to be ready for 2 weeks I've got to make a presentation for the school about my school project, but I am a little stuck here.. the solenoid lock opens, then 1&3 relay wont work, after some seconds as programmed 2&4 relays work and dc motor moves in the one direction and then solenoid lock closes..
I've tested out with FLUKE multimeter in 1&3 relay when it has source then the voltage is 0.03-0.07v when I have given it 5V power supply why?
it's a project about a fingerprint door lock full automatically (unlocks and opens via dc motor, closes via dc motor and locks)
little explanation, first about the fingerprint it works fine, I have fingers enrolled and everything seems fine, then we hop up to relay for solenoid lock, it has NO contact and COM port has 12V PC Power supply because the Solenoid Lock works on 12V, GND on the solenoid lock is connected to GND port of PC power supply, that works fine, then we hop up to our 4 handmade relay which has 2 NO (5V from PC power supply) and 2 NC (GND from PC power supply), which are both connected with 1&3 port to pin 11, and 2&4 relay to pin10 and here's my code
#include <Adafruit_Fingerprint.h>
#if (defined(AVR) || defined(ESP8266)) && !defined(AVR_ATmega2560)
// For UNO and others without hardware serial, we must use software serial...
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino (WHITE wire)
// Set up the serial port to use softwareserial..
SoftwareSerial mySerial(2, 3);
#else
// On Leonardo/M0/etc, others with hardware serial, use hardware serial!
// #0 is green wire, #1 is white
#define mySerial Serial1
#endif
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
int a=12;
int b=11;
int c=10;
void setup()
{
Serial.begin(9600);
while (!Serial); // For Yun/Leo/Micro/Zero/...
delay(100);
Serial.println("\n\nAdafruit finger detect test");
pinMode (a, OUTPUT);
pinMode (b, OUTPUT);
pinMode (c, OUTPUT);
// set the data rate for the sensor serial port
finger.begin(57600);
delay(5);
if (finger.verifyPassword()) {
Serial.println("Found fingerprint sensor!");
} else {
Serial.println("Did not find fingerprint sensor :(");
while (1) { delay(1); }
}
Serial.println(F("Reading sensor parameters"));
finger.getParameters();
Serial.print(F("Status: 0x")); Serial.println(finger.status_reg, HEX);
Serial.print(F("Sys ID: 0x")); Serial.println(finger.system_id, HEX);
Serial.print(F("Capacity: ")); Serial.println(finger.capacity);
Serial.print(F("Security level: ")); Serial.println(finger.security_level);
Serial.print(F("Device address: ")); Serial.println(finger.device_addr, HEX);
Serial.print(F("Packet len: ")); Serial.println(finger.packet_len);
Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate);
finger.getTemplateCount();
if (finger.templateCount == 0) {
Serial.print("Sensor doesn't contain any fingerprint data. Please run the 'enroll' example.");
}
else {
Serial.println("Waiting for valid finger...");
Serial.print("Sensor contains "); Serial.print(finger.templateCount); Serial.println(" templates");
}
}
void loop() // run over and over again
{
getFingerprintID();
delay(150); //don't ned to run this at full speed.
}
uint8_t getFingerprintID() {
uint8_t p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image taken");
break;
case FINGERPRINT_NOFINGER:
Serial.println("No finger detected");
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
return p;
case FINGERPRINT_IMAGEFAIL:
Serial.println("Imaging error");
return p;
default:
Serial.println("Unknown error");
return p;
}
// OK success!
p = finger.image2Tz();
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image converted");
break;
case FINGERPRINT_IMAGEMESS:
Serial.println("Image too messy");
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
return p;
case FINGERPRINT_FEATUREFAIL:
Serial.println("Could not find fingerprint features");
return p;
case FINGERPRINT_INVALIDIMAGE:
Serial.println("Could not find fingerprint features");
return p;
default:
Serial.println("Unknown error");
return p;
}
// OK converted!
p = finger.fingerSearch();
if (p == FINGERPRINT_OK) {
Serial.println("Found a print match!");
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
Serial.println("Communication error");
return p;
} else if (p == FINGERPRINT_NOTFOUND) {
Serial.println("Did not find a match");
return p;
} else {
Serial.println("Unknown error");
return p;
}
// found a match!
Serial.print("Found ID #"); Serial.print(finger.fingerID);
Serial.print(" with confidence of "); Serial.println(finger.confidence);
{
if (finger.fingerID == 3) {
digitalWrite(a, HIGH);
delay (3000);
digitalWrite(b, HIGH);
delay (2000);
digitalWrite(b, LOW);
delay (2000);
}
else if (finger.fingerID == 4) {
digitalWrite(c, HIGH);
delay (2000);
digitalWrite(c, LOW);
delay (3000);
digitalWrite(a, LOW);
delay (1);
}
return finger.fingerID;
}
}
// returns -1 if failed, otherwise returns ID #
int getFingerprintIDez() {
uint8_t p = finger.getImage();
if (p != FINGERPRINT_OK) return -1;
p = finger.image2Tz();
if (p != FINGERPRINT_OK) return -1;
p = finger.fingerFastSearch();
if (p != FINGERPRINT_OK) return -1;
// found a match!
Serial.print("Found ID #"); Serial.print(finger.fingerID);
Serial.print(" with confidence of "); Serial.println(finger.confidence);
return finger.fingerID;
}
