Tag Archives: LCD

89S52 Thermistor Thermometer: LCD version

thermo

by Wichit Sirichote:

This is the 2nd version of Thermistor Thermometer Project done by another group of my student. The 1st version having 4-digit 7-segment LED shows the use of simple display device. For applications that needs text display, this LCD version is more suitable and easy to adapt for many kinds of measuring devices.

89S52 Thermistor Thermometer: LCD version- [Link]

Automotive Chip-On-Glass LCD Dot Matrix Driver

The automotive products are quite recognized nowadays. It brings high demand on automotive chip and other related electronic devices. These demands are diverse, which brings difficulties to automotive developers. In this design, users are provided a modifiable firmware using In-System/In-Application Programming (ISP/IAP) via USB. It features the Vertical Alignment (VA) Chip-On-Glass (COG) display module with integrated backlight. The power supply can be done either via USB or an external power supply. This can also be used for an external VLCD that also provide temperature compensation. Its 100 segment and 18 backplanes allow the system to drive up to 1800 elements for graphic display.

The design is comprised of PCA8539DUG 100 x 18 COG automotive LCD dot matrix driver that generates the drive signals for multiplexed LCD, which in this design it is a Passive Matrix Vertically Aligned (PMVA) negative display providing a very dark background with a very wide and symmetric viewing angle. The NX1117CE low-dropout linear regulator is used to provide 3.3V supply for the backlight and the microcontroller. The LPCXpresso low-cost development platform provides the variety of interfaces with respect to the customer designs or needs. It is a highly integrated software development environment for NXP’s LPC microcontrollers. The JP1 to JP6 are used to select either the I2C – bus interface, or the SPI interface. They need to be all in the same position. The silk screen indicates which position to use for a given interface. The JP7 is a jumper that connects the VLCDOUT and VLCDSENSE to the VLCDIN pin of the PCA8539. It must be placed if the internal voltage generation is used. The JP9 may not have been soldered into the board during manufacturing. Instead, a 0Ω resistor (R2) is mounted, in parallel with this jumper. Removing the 0Ω resistor and mounting the jumper makes it easy to insert a current meter and measure the current consumption to the VDD pins of the PCA8539. After measurements, a jumper header can be inserted. The PMEG3005CT 500mA low VF dual MEGA Schottky barrier rectifier is used for the polarity and stress protection.

The development in automotive is quite helpful to people. It is use to accomplish task, save lives, and protect people from any type of danger. With this new design of automotive LCD, it is expected that automobiles will be able to optimize its usage and capability to serve people

Automotive Chip-On-Glass LCD Dot Matrix Driver – [Link]

Riverdi TFT display with FT801 controller

 

riverdi

If you are looking for a touchscreen LCD display for your next project you should take a look at Riverdi LCD solutions. Their aim is to produce innovative, high quality LCD solutions at affordable prices. They were kind enough to send us a sample of a FTDI FT801 controller LCD display along with their Arduino TFT shield to test out. This LCD display has a build in video engine that accelerates performance over standard TFT displays when used with low power MCUs.

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Continue reading Riverdi TFT display with FT801 controller

EA DOGS displays – small by size, big by features

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Minimum power consumption, very good legibility and a lot of versions – these are the EA DOG displays.

When we speak about “versions” – in case of EADOG from company Electronic Assembly it means a lot of “glass” types (STM, FSTN, transflective,…) and what is unique – many s display + backlight combinations. Right thanks to this unique possibility to make your own combination display + backlight according to your needs make the EADOG series so versatile. We can find here extraordinarily thin and compact graphic and character displays:

  • 1×8 – 2×16 – 3×16 for +5V or +3.3V power supply
  • 4×10/2×10 – 4×20 for +3.3V
  • Graphic 102×32 .. 240×128 for +3.3V

Character displays are with the SPI interface, some are also with I2C, and 4/8 bit. Simple 3,3V or 5V power supply further simplifies their usage.
In the EADOG family can be found „S“, „M“, „L“ and „XL“ series (EADOGS, EADOGM,…). The smallest one – EADOGS is suitable even for miniature applications, where a place is precious, but still a display is desirable or necessary there. On stock we keep three graphic versions 102*64 px with 33,6*23,4 mm active area. The newest member in the family of these small displays is the EA DOGS104-A character display (4×10 with a small font or 2×10 with a big font), while the character height may be changed by software. EA DOGS104-A is in standard equipped with 3 character sets (EN, EU, cyrilic).

The easiest way how to start development is to use the EA 9780-3USB development board.

EA DOGS displays – small by size, big by features – [Link]

The Atmel SAM L22

20150819015938_AtmelSAML22

by Martin Cooke @ elektormagazine.com:

Atmel has recently announced the addition of the SAM L22 series to its family of secure, ARM® Cortex® M0+-based MCUs. These new devices offer a built-in, ultra-low power capacitive touch interface with a segment LCD controller that can deliver up to 320 segments. Typical applications for these controllers would include low-power devices such as thermostats, electric/gas/water meters, home control, medical and access systems.

Their inbuilt features make them suited to IoT applications and the SAM L22 series includes security capabilities to deliver 256-bit AES, cyclic redundancy check (CRC), true random number generator, Flash protection and tamper detection to ensure information is securely stored, delivered and accessible. The devices use Atmel’s proprietary picoPower® technologies for low power consumption and smart low-power peripherals that work independently of the CPU in sleep modes.

The Atmel SAM L22 – [Link]

Arduino dust sensor

arduinodustsensor

Shadowandy’s Arduino-based Dust Sensor project:

Put together a dust sensor using Arduino Mega 2560, Shinyei PPD42NS dust sensor and LCD shield.

The codes and wiring instructions for Arduino Mega 2560 and Shinyei PPD42NS is as follow. However, I did include Serial output so you can view the sampling results using Arduino IDE’s Serial Monitor (9600 bauds).

Arduino dust sensor – [Link]

Programmable 8-character LCD module and digital voltmeter

volmeter

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 signal is derived from. You can load your own code into this module but it has even some nice features for people who just need a voltmeter module and don’t want to play with C-code.

Programmable 8-character LCD module and digital voltmeter – [Link]

An Android Reflow controller that anyone can build

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Andy build an android reflow controller based on ATMega8L . He writes:

Welcome to the never ending saga of Andy and his reflow controllers. About a year ago I published a project writeup showing how I built a PID-based reflow controller. It featured a 640×360 graphical LCD from the Sony U5 Vivaz mobile phone and was all-surface mount. It worked well and continues to serve me well to this day but I always thought that there were improvements that I could make in several areas.

Firstly, there’s no reason why it should have been all surface-mount. The LCD in particular has a 0.4mm connector that many people will find very hard to solder by hand. After all, presumably you’re building a reflow controller to help solve that very problem. Chicken and egg.

An Android Reflow controller that anyone can build – [Link]