Technical Tasks

 Digital Electronics Project 4 Way Traffic Signal Construction For this project of 4 way traffic signal we will be seeing all design steps necessary for its development. Digital circuits can be categorized in two main categories one is Combination and other is Sequential, our project of traffic signal includes both of these. steps required to make combination circuits are as follows Truth Table K Maps Boolean Expression Logic Diagram Implementation steps required to make sequential circuits are as follows State Diagram State Table Choice of Flip Flop to be used and Its Excitation Table K maps Boolean Expression Logic Diagram Implementation So we will be considering combination part of our 4 way traffic signal project first. Figure 1: Truth Table 4 Way Traffic Signal.   Figure 1 shows the sequence of signal lights which are required, it is quite evident that in a 4 way traffic signal at any one time one signal should be green only while other 3 should be red and just before green light

I2C LCD Advantages With Arduino I2C Module reduces number of pins used to connecting LCD to 4, it relies on serial communication with your controller, apart from this you could also connect multiple I2C devices on same pins on your controller and then address them you may find on Serial monitor from your Arduino IDE. I2C Module contains SDA this is the pin for Serial Data communication and other one is SCL which is used to provide for Serial clock input, rest of the two pins are for powering your LCD and I2C.  You May Watch This Video to understand how I2C module works with LCD and Arduino. Steps For Using I2C LCD, And For Connecting I2C With Arduino Nano Step 1. connect your LCD with I2C Module and Arduino as shown in images below.  Step 2. Set you Arduino IDE for Arduino nano as shown in image you are also required to download LiquidCrystal I2C library as shown in image. Step 3. We will check for address assigned to our I2C LCD, using serial monitor using the following code as given