Naruto is a Japanese manga series written and illustrated by Masashi Kishimoto.It tells the story of Naruto Uzumaki, a young ninja who seeks recognition from his peers and dreams of becoming the Hokage, the leader of his village. One of the most important parts in Naruto are the hand signs or seals. Hand signs are used to perform many ninjutsu, genjutsu, and other secret arts. They are designed to aid people in properly summoning and moulding chakra necessary to perform a technique. By using these signs in a particular order, they can perform various jutsus and techniques. There are different sequences of hand seals for every technique, requiring memorisation. There are 12 basic hand signs and this each named after an animal of the Chinese Astrology.
This project was inspired from Naruto Manga/Anime and I wanted to unlock my safe using naruto hand signs. If the sequence of hand signs was correct, it unlocked solenoid door lock.
Step 1: Hardware and Materials Required
Parts Required For Transmitter :
9 V battery
9 V Clip Connector
T-Side Double Sided Tape
NRF24L01+ 2.4GHz Wireless RF Transceiver Module
Parts Required For Receiver :
9 V battery
9 V Clip Connector
Arduino Uno + USB Cable
Male DC Barrel Jack Adapter for Arduino
Female DC Barrel Jack Adapter for Arduino
100 Ohm Resistor
LedNRF24L01+ 2.4GHz Wireless RF Transceiver Module
12 V Solenoid Lock
Hot Glue Gun
Soldering Iron Kit
Step 2: Wiring the Transmitter (Glove)
The MPU6050 consists of a 3-axis Accelerometer and 3-axis Gyroscope inside it. This sensor helps us to measure acceleration, velocity, orientation, displacement and many other motion related parameter of a system or object. This chip uses I2C (inter-integrated circuit) protocol for communication.
A flex sensor is basically a variable resistor that varies in resistance upon bending. Since the resistance is directly proportional to the amount of bending, it is often called a Flexible Potentiometer. We can measure that change using one of the Arduino’s analog pins. But to do that we need a fixed resistor (not changing) that we can use for that comparison (We are using a 10K resistor). This is called a voltage divider and divides the 5v between the flex sensor and the resistor.
NRF24L01 2.4 GHz transceiver module uses the 2.4 GHz band and it can operate with baud rates from 250 kbps up to 2 Mbps and it can be used for wireless communications at up to 100 meters.The operating voltage of the module is from 1.9 to 3.6V, but the good thing is that the other pins tolerate 5V logic.
Step 3: Transmitter Code (Glove)
The MPU6050 consists of a 3-axis Accelerometer and 3-axis Gyroscope inside it.This combination of gyroscopes and accelerometers is commonly referred to as an Inertial Measurement Unit or IMU. This sensor can detect angle changes. The angle readings from an IMU carry much noise. An IMU presents occasionally values that are incoherent and vary unreasonably to one another. To get proper values, clear values, a filter is needed.
To program the arduino nano you will need kalam filter library and RF24 library installed. So download the files below :
Kalman Filter : https://github.com/TKJElectronics/KalmanFilter
RF24 library : https://github.com/TKJElectronics/KalmanFilter
After downloading the files, open arduino IDE. Go to Sketch -> Include Library -> Add.ZIP Library and import ‘.zip’ into there.Next you’ll have to connect the arduino nano and upload ‘Glove_Transmitter.ino’ to the board.
Step 4: Making the Enclosure
Step 5: Wiring the Receiver (The Safe)
The solenoid door lock requires higher current than the arduino can provide, To drive the solenoid door lock you would need a power source that can give 12V, 500mA and the relay module will be driving it. A relay mdule is an electromagnetic switch operated by a relatively small current that can control much larger current like solenoid door lock.
Step 6: Receiver Code (The Safe)
You just connect the Arduino Uno to the PC with USB cable and upload ‘The Safe_Receiver.ino’ to the Arduino. Remember to change the ‘board’ and ‘port’ settings also.
Step 7: Hand Signs
The sequence of hand signs for this technique is Tiger – Snake – Dog – Dragon – Hand Clap.
The first sign is clasping your hands together and intertwine your fingers. From there, just raise your left and right index and ring fingers then keep them together.
All you have to do is stick your open hands together upright and then intertwine your fingers
This project I placed my right open palm atop my left fist but in the manga It involves placing left open palm atop right fist. The reason why this project and the manga are different because I forgot.
It’s quite difficult for a normal human to perform the hand sign since it requires you stacking four of your half-closed fingers alternately with both of your pinkies sticking out at the bottom and touching at the tips.