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The 16x2 LCD is very popular because of it's built in HD44780 interface module. This module makes it extremely easy to add an LCD to any project with its built in character set and easy command structure.
HD44780 based character LCDs require at least 6 I/O lines from microcontroller to display data. Therefore, they are not suitable for low-pin microcontrollers like PIC12F series microchips. In this project, I am going to show how to drive an HD44780 based LCD display with only 3 pins of a microcontroller. I am going to demonstrate it with PIC12F683 microchip. The character data and command from the microcontroller is transferred serially to a shift register (74HC595), and the parallel output from the shift register is fed to LCD pins.
This is a bit of a side note, there's no LCD included with the Arduino starter pack, but I figure its a popular request, so here we go!
The LCDs run on +5v and require only 6 data pins to talk to. You can use any data pins you want!
This tutorial will cover character LCDs
This is an alarm clock I built. It was very effective during the sort time I used it, because I programmed it to play a very annoying tune through a speaker. I actually started to wake up before the alarm went of, so other people in the house didn't wake up from the annoying pitches it played.
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Welcome to my RC5 Decoder page. Here you will find design information relating to my RC5 Decoder project, along with schematics, PCB layouts and source code. All of this information is provided free of charge to the Electronics Design Hobbyist community. Please read my Projects Readme before you download any of my content.
Very simple thermometer with PIC16F88, two LM35 sensors and KS0108 graphic LCD.
Now ive played with other LCD’s lots, but this one caught my attention because of the low power requirements (It runs from a single CR2032 Motherboard battery). I built the Temp probe as shown on the site and it worked well. I had several of the PCBs made, and decided that the others would be my own projects with the same hardware. I wondered what I could push this simple PIC and Nokia LCD into doing.
The Temperature control module was a part of my Final year undergraduate project,which consisted of transmitting data wirelessly.
The module uses an inexpensive 8 bit Temperature Sensor the TMP37 from Analog Devices.
Since the data was analog and the PIC16f84 does not have an analog input,an external ADC had to be used.
Texas Instruments’ TLC549 was chosen for this.The advantage of this ADC was that it could communicate with the microcontroller serially.You may also use similar ADCs from Maxim-IC.
The LCD is a normal 16×2 display which uses the Hitachi Controller HD44780.
The module is breadboarded and not done on a PCB.Schematics are included in appropriate places below.