A while ago we wrote about using cheap Nokia 1202 LCDs for projects. These LCDs come with a solderable connector, and are easy to interface over the I2C bus. Toxic239 made a frequency counter based on the MSP430 Launchpad and this LCD. Source code for his project is available in the forum.
Tag Archives: LCD
GPS time standard clock with display
Ezflyr’s GPS-based clock uses the GlobalSat EM-406 module to show the time with around 1 second accuracy. Here is a photo of the completed GPS Display Time Standard I intend to use for setting a variety of clock projects I’ve made, or am working on. This GPS module, the GlobalSat EM-406, has excellent sensitivity as […]
Driving two character LCDs in parallel
Abdullah explored the idea of driving two character LCDs in parallel. When he couldn’t find any information about this online, he decided to try it out himself. Then I thought about it and I gave it a go. The result is positive! However, there is a gotcha; if you are using LCDs from different manufacturers […]
Serial port monitor with 2×20 LCD and 4K text buffer
Kerry uses a DIY serial display to show debugging data sent from an Arduino’s UART. Sometimes the data comes too fast to read, so he added a 4K buffer and controls to scroll thorough the history. …if your application generates a lot of messages, it would still be hard to spot the relevant information as […]
AVR transistor tester build
Mick received his boards for the AVR transistor tester (machine translation) and was quick to assemble them. His board was designed to the exact dimensions of a 2X16 LCD screen. He did have some issues with the silk screen, but all in all we think his boards are awesome. Via the forum.
Cheap 2X16 red/black LCD tests
We got our hands on a few cheap 2×16 red/black LCDs of eBay for $5 a piece, these are the same LCDs from the unboxing video. In preparation to build the soldering iron driver, we tested them out with the Bus Pirate LCD adapter and the USB LCD Backpack. Initially we were worried that the […]
Bravia LCD TV teardown
Hak80r has been busy disemboweling electronic stuff lately. His latest is a cracked Bravia LCD TV. There’s lots of pictures, users with a slow connections be advised. Via the forum.
Nokia 1100 LCD interfacing with a microcontroller
Circuitvalley posted a step by step guide to interfacing Nokia 1100 LCDs with a microcontroller. Via the comments.
Bus Pirate week, day 2 – accessories and cables
This week is dedicated to Bus Pirate development. We’re cleaning up firmware v6 and getting ready for a final release. Today we looked at Bus Pirate accessories and cables. Here’s some links mentioned in the video: Bus Pirate demo boards Bus Pirate PIC programming adapter Bus Pirate LCD adapter Old Seeed probe cable with cheap […]
App note: AVR Butterfly
AVR butterfly is a cheap LCD development platform for the ATmega169 microcontroller. This board features: LCD-on-Glass display with 120 segments. 4 direction joystick with a push-button. Piezo element as a speaker. 32KHz crystal for real time clock projects. 4Mbit DataFlash memory. RS-232 level converter. NTC thermistor as a temperature sensor. Light dependent resistor as a […]
Get your 5v LCD running on 3.3V
Here is a hack that will let you use some 5v HD44780 LCDs at 3V. On some common LCDs you can short the resistor labeled R7 and interface with the LCD at 3.3V. Via the forum.
Driving a cheap 3” touchscreen LCD
Colin found cheap 3” touchscreen LCDs on eBay for just $7. He bought a bunch of them and developed a breakout board. This LCD doesn’t have an integrated controller, you need to use a high power microcontroller to drive the LCD and run the touchscreen. Colin used a PIC32 and the pinout, protocol, and firmware […]
NEW PROTOTYPE: USB & serial LCD backpack
Small character LCDs can show new mail stats, system performance, news feeds, and more. The USB and Serial LCD backpack connects HD44780-compatible character LCD screens to your USB (or serial) port. Almost every open source hardware shop sells some type of serial LCD backpack. Our goal is to build an update to the classic serial […]
Bus Pirate: HD66717 I2C character LCD demo
Pietja demoed an HD66717 2×16 display using the Bus Pirate v4 in I2C mode. He provides the instructions and data addresses you’ll need to communicate with this and similar I2C displays. Via the forum.
GLCD clock with large graphical LCD
ezflyr posted his GLCD clock with large graphical LCD in the project log forum: I’ve made quite a bit of progress on my GLCD clock project in the last week or so. I’ve now got the time keeping routines, and the GPS ‘sync’ routines working flawlessly. When connected to a GPS receiver, the clock will […]
Arduino library converts LCD output to VGA output
The Gadget Factory has a new Arduino library that lets you take Arduino code written for LCD displays, change 3 lines of code, and convert it to VGA output: The VGALiquidCrystal library converts sketches that will run on an HD44780 LCD display to sketches that will run on a VGA moniter. This library is derived […]
Low power LCD smackdown
Big Mess o’ Wires’ posted a roundup of small, low power LCDs for MCU projects. Sometimes it seems like there are a million different LCDs you might use with your microcontroller project, and deciding on one can be hard. Once you’re ready to move beyond a basic text display, you’ll find graphic displays have a […]
Command line LCD Arduino interface
Joseph Swanson from swantron likes working with the command line. He also likes working with the Arduino. So he came up with this simple project which takes the results of his command line entries and directs them over the Linux box’s USB output to the Arduino. The Arduino then displays the data on an attached […]
Web interactive LCD controlled by Arduino
Here’s a project by Everett Robinson which demonstrates how to use an Arduino, Ethernet shield, 2×16 LCD, a breadboard and 2K resistor to produce a web-controlled interactive LCD display. The Arduino generates a simple HTML web page showing the text currently displayed on the LCD, providing an input form to change the LCD text, resulting […]
Arduino talking to an I2C LCD display
StrangeParty demos how to use the Matrix Orbital 20×4 display with Arduino via I2C using the Wire library. The LK204-25 is a serial display, so connection to the Arduino requires just two wires to accept I2C commands and data. We expect this same procedure would work with other manufacturers’ I2C LCDs. Simple and useful if […]