Hello everyone! I hope you all will be absolutely fine and having fun. Today, we are going to work on Arduino Keypad Interfacing. First of all, I would like to tell you a bit about the keypad. After getting the basic idea about the keypad, we will start our discussion about Arduino Keypad Interfacing. You should also have a look at Interfacing of Keypad with PIC Microcontroller.
In this tutorial, I am going to use a 4×4 keypad. It has sixteen buttons having four alphabetic characters. Let's have a look at the Arduino Keypad Interfacing:
What is Keypad?
The keypad consists of multiple buttons, arranged in the form of a matrix(rows & columns) and is used in embedded projects.
They are cost-efficient and are easily available from online el ...
Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to share a detailed Introduction to MC34063. It's normally required for the construction of DC to DC converters. MC34063 has a high current output switch, Pulse Width Modulation (PWM) controller with current limiting, compensated reference of internal temperature, a comparator and a driver.
For the inverting, boost and buck applications there is no need of a huge complicated external components, instead they can be performed using minimum external components. MC 34063 operates properly in the temperature ranging from 0 to 70 degree celsius. MC34063 ha s wide range of applications in real life e.g. portable equipment, Human Machine Interface (HMI), test and m ...
Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to explain you about Introduction to LM386. Its a power amplifier specially designed for low voltage consuming applications. The gain of LM 386 is set around 20 internally. But the gain could be increased due to the insertion of external resistor and capacitor between the pin number 1 and 8. The gain could increase to any value from 20 to 200.
The LM-386 inputs are ground referenced. The output are biased to the half of the input voltage levels automatically. When LM 386 operates on 6V, its quiescent power drain is around 24mW. This property of LM-386 makes it ideal for the battery operation. Its major features include battery operation, minimum external p ...
Hello everyone! I hope you all will be fine and having fun. Today, I am going to give you an elaboration on Introduction to UA741. UA 741 is basically a general purpose operational amplifier. This amplifier is considered to be ideal for the voltage follower applications because latch-up operations are no there in its case and it moreover it has High Common Mode Input Voltage Range (HCMIVR). UA-741 is a high performance operational amplifier made up of single silicon chip.
UA 741 is stable without using external components, due to the internal frequency compensation and this device is safe from the short circuiting. In order to cancel the effect of offset voltages we can use a small valued potentiometer/resistor. UA-741 can operate in a temperat ...
Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to share my knowledge about Introduction to NE555. NE 555 is a precise timing circuit device. It can produce the precise time delays and oscillations. The time interval can be controlled by external resistor and capacitor when NE-555 operates in mono stable mode.Whereas in adjustable mode two external resistors and one capacitor controls the duty cycle and frequency.
NE555 is an Integrated Circuit (IC/Chip) which can be used in different types of timers. The output circuit is capable of bearing current up to 200mA. NE-555 timer works on voltage ranging from 5V to 15V. The output level have compatibility at 5V supply. NE 555 timer can be used in oscillator a ...
Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to share my knowledge about Introduction to TL072. TL 072 is basically a high speed Junction Field Effect Transistor (JFET). It is also known as the dual operational amplifier. It has a bipolar transistor and high voltage JFET in its case. TL-072's important features include low offset current, high slew rates, low input voltage, low offset temperature coefficient etc.
Some of the major features may include low power consumption, low noise, common mode input voltage range includes Vcc, latch-up free operation etc. TL 072 has a very wide range of applications including oscilloscope, solar inverters, AC inverters and VF drives, audio mixers, Un-interruptable Pow ...
Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to share my knowledge about Introduction to PIC12C508. PIC 12C-508 belongs to the family of high performance and cost effective micro controllers. It is a fully static eight (8) bit device. PIC 12C 508 micro controller is Complementary Metal Oxide Semiconductor (CMOS) which is based on EEPROM, EPROM and ROM.
PIC 12C-508 Microcontroller has Reduced Instruction Set Computing (RISC) having thirty three (33) instructions based on single words. Except program branches all of the instructions are single cycled i.e. 1 millisecond. Whereas two cycles are taken by the program branches. PIC 12C 508 has a lot amazing features e.g. eight (8) bit real time clock, power o ...
Hello everyone! I hope you all will be absolutely and having fun. Today, I am going to give a detailed discussion on Introduction to LM117. Lm 117 is basically a voltage regulator. It is most commonly known as positive (+ve) voltage regulator used to regulate the voltage up to the desired positive level. Lm-117 can regulate the voltage ranging from 12.5V to 37V and provides the current around 1.5A. LM 117 has three (3) pins and is quite easy to use.
To obtain the desired output voltage we need to connect the two external resistors. There are three types of regulations in LM-117 i.e. line regulation, fixed regulation and load regulation. The line regulation & load regulation both are far better than fixed regulation. LM 117 provides overload ...
Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to give a detailed discussion on Introduction to LM318. LM 318 is basically a high speed Operational Amplifier (Op-amp). It provides higher slew rates and wide range of bandwidth. LM-318 has processing speed 10 times higher than the common operational amplifier. It has unity gain frequency compensation. External components are not required for its operation.
Feed forward compensation increases the slew rate up to 150 V/us for inverting applications. It also doubles the bandwidth as compared to the earlier. In LM 318, in order obtain the high stability level we overcompensation can be used with amplifier. LM 318 setting time can be reduced by adding an extern ...
Hello everyone! I hope you all will be absolutely fine and having fun. I am going to give you a detailed Introduction to CD4051 today. CD 4051 is an analog multiplexer and demultiplexer. It has very low OFF leakage current and low ON impedance. Over full voltage ranges, very low power is dissipated by CD-4051.
CD-4051 is an eight (8) channel multiplexer and has three control input named as A, B and C. These inputs connect only 1 out of 8 channels to the output in order to obtain the desired output. Channel I/O terminals became outputs and common O/I become input terminals when CD 4051 is used as a demultiplexer. CD-4051 has a lot of amazing features e.g. binary address decoding on chip, break before make switching eliminates channel overlapping, ...
