Finger print , lcd 16x2 interfacing using LiquidCrystal and Adafruit_Fingerprint

Projects Programming
1

hy i'm trying to interface adafruit Finger print sensor , 16x2 lcd using LiquidCrystal and Adafruit_Fingerprint libraries both are work well speratly but when interface together they lcd does't showing the output. i don't want to uses serial ports for lcd that's i use LiquidCrysta.h

my code is

#include <LiquidCrystal.h>
#include <Adafruit_Fingerprint.h>
#if ARDUINO >= 100
#include <SoftwareSerial.h>
#else
#include <NewSoftSerial.h>
#endif
uint8_t getFingerprintEnroll(uint8_t id);
#if ARDUINO >= 100
//green 11 and white 12
SoftwareSerial mySerial(11, 12);
#else
NewSoftSerial mySerial(11, 12);
#endif
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

//4 rs==10 and enable 6 ==9
LiquidCrystal lcd(10, 9, 5, 4, 3, 2);
void setup() {
lcd.begin(16, 2);
// Serial.begin(9600);
lcd.print("fingertest");
delay(200);
// finger.begin(57600);
if (finger.verifyPassword()) {
delay(200);
lcd.print("Found fingerprint sensor!");
} else {
lcd.print("Did not find fingerprint sensor :(");
while (1);
}
delay(200);
lcd.print("fp code not working");
}
void loop() {
}

lcd only showing "fingertest"

i think error is at this function

if (finger.verifyPassword()

plz suggest me urgently :frowning:

2

10013256-001:

//  finger.begin(57600);

Why did you comment out this line?!?

3

i was testing this thats why i comment it i also run this with uncomment

4

If   if (finger.verifyPassword()) { is not returning then something is very wrong. It should take at most about 5 seconds waiting for a reply from the fingerprint reader and then show either: "Found fingerprint sensor!" or "Did not find fingerprint sensor". It would have to take some very unusual problem to cause this failure, the most likely being some kind of conflict between the two libraries.

5

plz suggest me what i do =(

6

My best guess is that the sketch is running out of memory. Here is how you check available memory:

http://playground.arduino.cc/code/AvailableMemory

Put calls to print out those values after every line in setup(). If the available memory gets very low (less than a few hundred bytes) you may need a MEGA or other Arduino model with more SRAM.