Posts Tagged ‘LCD’

Reverse engineering of BK Precision 1696 switching power supply’s LCD protocol

Monday, November 20th, 2017

Kerry Wong writes: As mentioned in my previous post, besides the broken LCD there was also an issue with the power supply portion of the unit and the output voltage was clamped at around 10 to 11V. The digital circuitry portion however seemed to be intact. Unfortunately since an identical...

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Posted in reversed | 1 Comment »

DIY 32ch FPV 5.8ghz LCD

Friday, April 29th, 2016

Spikey made his own DIY 32ch FPV 5.8ghz LCD with Dirty Board PCB’s: If you’re like me, you don like buying stuff that’s ready-to-go, but rather build one yourself. We usually spend more money, but it’s way more satisfying I really didn’t want to buy an overly expensive FPV LCD receiver, so...

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Posted in, DIY | No Comments »

App note: The LED versus LCD decision

Sunday, April 17th, 2016

Choosing between two display types, LED and LCD discussed in this application note from Murata. Link here (PDF) Users of contemporary digital panel meters (DPMs) have a variety of options available to them. While options are nice, they invariably mean more choices have to be made. After determining what meter...

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App note: LCD screens don’t flicker – or do they?

Sunday, April 10th, 2016

An old application note from Intersil on comparison of CRT and LCD regarding display flicker. Link here (PDF) When comparing CRT to LCD screens, one of the most popular differences is the issue of flicker. It is a common assumption that CRT screens flicker while LCD screens do not. In...

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App note: LED back light driving methods

Sunday, February 28th, 2016

Using pulse width modulation scheme for LCD back lighting an app note from Hantronix. Link here (PDF) LED back lights on LCD modules are generally driven with a dc voltage through a current limiting resistor. This simple approach is perfectly acceptable for most applications. When the primary consideration is an...

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Posted in app notes | 3 Comments »

App note: Temperature compensation for LCD displays

Sunday, February 28th, 2016

For over the normal range temperature, Hantronix presents a simple temperature compensation circuit to correct LCD contrast, Link here (PDF) The optimal contrast setting for LCD displays varies with ambient temperature. For most applications this variation in contrast is tolerable over the “normal” temperature range of 0°C to +50°C. Most...

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App note: Voltage generating circuits for LCD contrast control

Sunday, February 21st, 2016

Another application note from Hantronix, Inc. on simple to digitally controlled efficient power supply for LCD display contrast. Link here (PDF) Many LCD display modules require a negative or positive voltage that is higher than the logic voltage used to power an LCD. This voltage, called Vl, Vee or the...

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Posted in app notes | 6 Comments »

App note: An explanation of LCD viewing angle

Sunday, February 21st, 2016

An application note from Hantronix, Inc. on LCD viewing angles and how it influences the selection of the right LCD for your application. Link here (PDF) LCD displays have a limited viewing angle. They lose contrast and become hard to read at some viewing angles and they have more contrast...

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Programmable 8-character LCD module and digital voltmeter

Wednesday, July 22nd, 2015

A programmable 8-character LCD module and digital voltmeter project from Tuxgraphics: Our 3 digit LED digital voltmeter module has been quite successful over the years. This new LCD module is basically an advanced version with a lot more capabilities. You can power it with the same voltage source that your...

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Posted in project logs | 5 Comments »

ESP8266 Wifi information LCD

Friday, April 24th, 2015

Renze shares his ESP8266 Wifi information LCD in the project log forum: This is a little project I did in about 2 hours. It uses an LCD display I got from an old ISDN phone and shows text sent to it over WiFi. The ESP8266 runs a webserver which shows a form...

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Posted in project logs, wireless | No Comments »

Arduino Uno R3 graphics accelerator shield uses no pins

Tuesday, February 24th, 2015

Andy Brown has written an article detailing his Arduino graphics accelerator open source project: This project brings together the knowledge that I’ve gained over the last few years to bring you a graphics accelerator for the Arduino Uno R3 based on an ARM Cortex M0 core attached to a 640×360 LCD...

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Posted in Arduino | 12 Comments »

Flir Lepton thermal imaging sensor + gameduino 2

Friday, January 16th, 2015

Andrew Rossignol of The Resistor Network writes: I have successfully implemented a driver for the Lepton module and displayed frames on an LCD. This is all running on an STM32F4 processor on a Nucleo board. Attached to it is a Gameduino 2 which incorporates the FT800 graphics processor. I have...

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Posted in hacks, sensors | No Comments »

Getting started with an I2C LCD using a Bus Pirate

Friday, December 26th, 2014

Inderpreet over at Embedded Code writes: I got one of these (The LCD!) LCDs from the budget and the motive is to use them to display air quality. Low and behold I got them and these things are tiny… I mean more than I thought. BUT they should get the...

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Posted in Bus Pirate, LCD | No Comments »

Making an FPV system

Monday, November 17th, 2014

Check out Elpis' FPV system in the project log forum: I've started flying quadcopter and tricopters a few months ago and now I am going towards FPV (First Person View). So, instead of having all the cables around and the different components on top of the other I put the receiver...

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Bus pirate, 5110 LCD interfacing

Wednesday, September 3rd, 2014

s3c writes: The Bus Pirate has to be one of the handiest debugging platforms ever created. It makes it really easy to ensure you know how something works before placing it in your final design. I recently decided to use some of the old refurbished 5110 LCD modules in a...

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Posted in Bus Pirate, Interface | 3 Comments »

LCD clock version 2 – part I

Friday, May 30th, 2014

Kevin Rye posted an update on his LCD clock project: Now that I’ve spent some time working with SMD Atmegas, I decided to redo the PCB to make it all SMD. By moving the Atmega to the SMD version, I picked up some additional space on the PCB. That allowed me...

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Posted in Arduino, clock | 4 Comments »

Arduino GPS distance calculator

Tuesday, April 29th, 2014

GPS distance calculator created by a group of students from Indiana University, built as a final project:  As sport fans, we thought it would be really useful to create a tool that would measure distance between two points. This could be used for many different sports, but we focused on...

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Posted in Arduino, measurement | 2 Comments »

App note: Cascading NXP LCD segment drivers

Sunday, March 2nd, 2014

A great app note from NXP on cascading multiple LCD driver to work as one large display. This application note aims to assist designers using NXP LCD segment drivers in making a cascaded design. Cascading means combining more than one LCD driver in a design in such a way that...

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App note: LCD biasing and contrast control method

Saturday, December 14th, 2013

Application note on direct Liquid crystal display driving using PIC microcontrollers. This Application Note provides methods that can be used to provide biasing voltages for Liquid Crystal displays. This document covers most of the biasing methods used in the PIC microcontrollers with an LCD controller.

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DIY custom LCD

Thursday, December 5th, 2013

[embed][/embed] This video by  Ben Krasnow  discusses how to make your own custom LCD.

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Posted in DIY, LCD | 6 Comments »

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  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
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