Initial testing. Ignore the humidity sensor, that was for something else.
The vacuum gauge outputs 0-10VDC. This had to be changed to a 0-5VDC range using a potential divider so it was compatible with the Arduino. Initial build used a 10k pot in place of a vacuum gauge to make it simpler.
Arduino Vacuum Gauge Display – [Link]
In this article Raj over embedded-lab.com shows us how to measure our heart rate using Arduino UNO, his Easy Pulse Plugin and 4-digit SPI seven segment LED display module. It computes the heart rate by processing the analog pulse signal output from the Easy Pulse Plugin sensor and displays it on the seven segment display module.
Arduino measures heart beat rate from fingertip – [Link]
Objective-oriented display solution, to reduce the GUI development difficulty and shorten the cycle.
Nextion is a Seamless Human Machine Interface (HMI) solution that provides a control and visualisation interface between a human and a process, machine, application or appliance. Nextion is mainly applied to IoT or consumer electronics field. It is the best solution to replace the traditional LCD and LED Nixie tube.
This solution includes hardware part – a series of TFT boards and software part – Nextion editor. Nextion TFT board uses only one serial port to do communicating. Let you get rid of the wiring trouble. We notice that most engineers spend much time in application development but get unpleasant results. In this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel etc. to enrich your interface design. And the drag-and-drop function ensures that you spend less time in programming, which will reduce your 99% development workloads. With the help of this WYSIWYG editor, GUI designing is a piece of cake.
Nextion: a cost-effective high-performance TFT HMI – [Link]
I was designing an electronic clock to see time easier at night. And while at it, I came up with a nice idea:
Having used a lot of perfboards(dot pcb) to prototype my projects, I thought of a way to make a 7 segment display out of smd leds. Making a segment out of 2 common grounded leds..
I stumbled upon it while trying to determine a nice size for my clock. I drew a mask on perfboard with a marker. Later I redrew it and cut it out:
An SMD 4 digit 7 segment DIY display – [Link]
Simply applicable graphic platform FTDI EVE simplifies development thanks to immediately-usable display modules with capacitive touch panels.
FTDI „Embedded Video Engine“ (EVE) platform may be familiar to you from our article like „Be in plus with a graphic platform FTDI VM800P “.
FT800, as a powerful graphic platform with minimum requirements for a host MCU will meet your requirements with a high probability. Into the final application, you´ll probably use only the “heart of the system” itself – chip FT800 (supporting resistive touch panels) or chip FT801 (supporting capacitive panels) but for the beginning it´s certainly a good idea to start with a suitable module, which only needs to be switched-on and it´s possible to start writing and evaluating a SW application.
Thanks to ready-made modules series VM801 nothing prevents you from trying this platform in your application.. VM801 series modules are available in 2 variants:
- VM801B – „basic“ module with the FT801 chip, display and accessory circuits. It is a basic module for evaluation of applications. Its main benefit is that you don´t need to design a PCB but you have a well-tried functional unit with a display and also a precise bezel.
- VM801P – „plus“ module with the FT801 and the AtMEGA328P/16MHz microcontroller. A powerful module capable of a standalone operation, also supporting Arduino libraries.
Further, VM801 are available with 4,3“ as well as 5“ displays (480×272 px), both with capacitive touch panel. Modules VM801 are suitable for development, but also for a small-series production, when it´s simpler and cheaper to use such a module than to develop all the hardware portion. Detailed description can be found in the VM801B and VM801P datasheets.
Immediately available TFT modules with capacitive touch panels – [Link]
Even your device can be more user friendly thanks to various pictograms displayed on Winstar WEG series displays with a great contrast and viewing angle.
100×16 pixels at series Winstar WEG010016 isn´t that much at the first sight. But when we realize, that such display represents a sort of a “replacement” or “upgrade” of a character display (2×16-20 chars.), we´ll find, that it has wide possibilities of usage and it´s able to display much more than a character one.
Naturally, even a character display is able to display pictograms, but they´re limited by a given row or a matrix creating a given character. On the other hand, at a graphic display the whole area is available and naturally – it´s still able to display characters too.
Similarly like WEH series character displays, even the WEG series supports 4/8-bit interface „6800“/“8080“ and they have a built-in universal controller WS0010.
When we add advantages of OLED displays and attractive price, we have in hands interesting, universally usable display.
Small graphic OLED displays for great prices – [Link]
by Colin Jeffrey @ gizmag.com:
Researchers from the University of Manchester and University of Sheffield have developed a new prototype semi-transparent, graphene-based LED device that could form the basis of flexible screens for use in the next-generation of mobile phones, tablets and televisions. The incredibly thin display was created using sandwiched “heterostructures”, is only 10-40 atoms thick and emits a sheet of light across its entire surface.
Flexible graphene-based LED clears the way for flexible displays – [Link]
by Phil Townshend @ edutek.ltd.uk :
A nifty 32×7 dot matrix display module, programmable via an RS232 serial port. There are preset inputs to display preset messages or simply control directly from a PC or laptop.
The principle of the display is based on our persistance of vision, the same thing that enables us to watch movies without seeing the flickering changes of frame. This display has 32 LEDs horizontally by 7 vertically. At any one time there is only ever one column of LEDs lit. The on’s and off’s are presented to the anode connections while the columns are enabled one by one. In this way a dot display of characters can be generated and when the speed is increased sufficiently, we stop seeing the flickering and see it as a steady display of dots.
LED Dot Matrix Display – [Link]
Arduino Nokia 5110 LCD display tutorial #2 – Load Graphics on the display
In this tutorial we are going to learn how to load our custom made graphics into a Nokia 5110 lcd display.
Arduino Nokia 5110 LCD display tutorial – [Link]
by Joe @ hobbyelectronics.net:
This project was built to monitor the temperature of one of our computer rooms at work that has rather temperamental air-conditioning. The maximum temperature can be set, and if this is exceeded an alarm is activated.The unit gives a continuous display of current temperature and it’s possible for the constructor to change the device program firmware or display board.
LED display Over Temperature Alarm – [Link]