LCD/OLED category

Displaying Customized Graphics on OLED display using Arduino

One thing we all always wish we could do when using any display is to load our own custom graphics, be it a logo, gif etc. In today’s tutorial we will show how to do just that on an OLED display using an Arduino.

OLED (organic light-emitting diode) display is a display based on light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current. This layer of organic semiconductor is situated between two electrodes; typically, at least one of these electrodes is transparent. OLEDs are used to create digital displays in devices such as television screens, computer monitors, portable systems such as mobile phones, handheld game consoles, and PDAs. OLED displays do not require a backlight because they emit visible light and can thus, display deep black levels and be thinner and lighter than a liquid crystal display (LCD).

Displaying Customized Graphics on OLED display using Arduino – [Link]

gen4-4DPi Series – Primary Displays for the Raspberry Pi

The gen4-4DPi range are Primary Display’s for the Raspberry Pi* A+, B+, Pi2, Pi3, Pi Zero and Pi Zero W, which display the primary output of the Raspberry Pi, like what is normally sent to the HDMI or Composite output. It features an integrated Resistive Touch panel or Capacitive Touch panel, enabling the gen4-4DPi to function with the Raspberry Pi without the need for a mouse.


  • Universal Primary Display for the Raspberry Pi
  • Compatible with Raspberry Pi A+, B+, Pi2, Pi3, Pi Zero and Pi Zero W
  • 480×272 Resolution (4.3”)
  • 800×480 Resolution (5.0” & 7.0”)
  • TFT Screen with integrated 4-wire Resistive Touch Panel (T), or Capacitive Touch Panel (CT)
  • Display GUI output / primary output, just like a monitor connected to the Raspberry Pi
  • High Speed 48MHz SPI connection to the Raspberry Pi, featuring SPI compression technology
  • Typical frame rate of 20 Frames per second (FPS) – 4.3”, or 7 Frames per second (5” & 7”), higher if image can be compressed further by the kernel. Lower if no compression is possible
  • Powered directly off the Raspberry Pi, no external power supply is required
  • On board EEPROM for board identification, following the HAT standard

Available in:

  • gen4-4DPi-43T       (4.3” Resistive Touch)
  • gen4-4DPi-50T       (5.0” Resistive Touch)
  • gen4-4DPi-70T       (7.0” Resistive Touch)
  • gen4-4DPi-43CT    (4.3” Capacitive Touch)
  • gen4-4DPi-50CT    (5.0” Capacitive Touch)
  • gen4-4DPi-70CT    (7.0” Capacitive Touch)


Arduino E-Paper Display Review ( Waveshare 1.54″)

Our friends at uploaded a new video. It’s about Waveshare 1.54″ e-paper display:

Dear friends welcome to this Arduino E-Paper display tutorial. In this video, we are going use this small e-paper display with Arduino for the first time and talk about its advantages and disadvantages.

Arduino E-Paper Display Review ( Waveshare 1.54″) – [Link]

Arduino Mega Chess on TFT display

Chess processor with GUI dedicated for Arduino Mega. by Sergey Urusov

After some my Arduino project remains unclaimed touchscreen, so I decided to realize my chidhood dream to create a chess program. After a couple of months it wins me, but it is not big deal because i do not have any chess rating, just amateur.

This project uses Arduino Mega 2560 because of lack of operative memory on Uno, 2.8 inch touchscreen, passive buzzer, and about 2000 lines of code.

Arduino Mega Chess on TFT diplay – [Link]

ESP8266 WiFi Analyzer

This instrucatables show how to make an ESP8266 version WiFi Analyzer clone.

WiFi Analyzer is a handy app in Android, it help to visualize the WiFi signal information around you. It is very useful for helping select a right channel for setting a new AP. If you selected a channel that as same as another AP near you, you may encounter interference and degrade the network performance.

ESP8266 WiFi Analyzer – [Link]

IoD-09, An Intelligent WiFi-Enabled Display Module

4D Systems, the manufacturer of intelligent graphics solutions, has announced a new 0.9” smart display module as part of the ‘IoD-09’ series. This series is a set of small full-color TFT display modules that feature the Espressif ESP8266 SoC. It also comes with microSD card slot and is compatible with Arduino IDE.

IoD-09 Display Module

The IoD-09 modules have 6-pin connector at each end, which can connect easily to other applications and boards. It is also suitable for connecting to accessory boards for a range of functionality advancements. The design of these display modules provides a suitable platform for easy integration of displays into a product.

IoD-09 Display Module Specifications:

  • 80 x 160 Resolution, RGB 65K true to life colors, TFT Screen.
  • Built-in WiFi suitable for ‘Internet of things’ applications.
  • 802.11 b/g/n/e/i support
  • Integrated TCP/IP protocol stack
  • WiFi 2.4 GHz, supporting WPA/WPA2 and WEP/TKIP/AES, along with STA/AP/STA+AP/P2P operation modes
  • 4Mbit (512kb) of Flash memory for User Application Code and Data.
  • 128Kb of SRAM of which 80kb is available for the User.
  • 12 pin/pad interface, for all signals, power, communications, and programming.
  • Onboard microSD memory card connector for multimedia storage and data logging purposes.
  • DOS compatible file access (FAT16 or FAT32 format).
  • Display full-color images, animations, and icons.
  • 4.0V to 5.5V range operation (single supply).
  • Module dimensions:
    • (TH version) 31.8 x 16.4 x 11.7mm.
    • (SM version) 37.0 x 16.4 x 5.9mm.
  • Weighing: (TH / SM) ~5 g.
  • RoHS, REACH, and CE compliant.

IoD-09 is also available on two different models, IoD-09TH TFT LCD module with Through Hole interface, and IoD-09SM TFT LCD module with Surface Mount interface. In addition, they can act as master or slave devices, connect to the internet, display a raft information and graphics, along with the capability to communicate to SPI, I2C, and/or 1-wire devices, as well as having general GPIO for digital control/input.

The IoD-09 is compatible with Arduino IDE and the 4D Systems Workshop4 integrated development environment (IDE). Workshop4 provides powerful graphics using the GFXdloIoD09 graphics library specifically for the IoD-09 series through a drag and drop style graphical user interface (GUI).

Workshop Software

Finally, you can buy the IoD-09 display module for about $20. There is also a starter kit for $40 which includes the module, the 4D-UPA programmer, and a 4GB micro-SD card. For more information, you can visit the official page and download the datasheet.

ESP32 NTP OLED clock

@ build a OLED display NTP clock and document his process on his blog:

As a first project with my new ESP32 module with OLED display I chose to build OLED clock. I thought I’ll just find some existing code, upload it and it’s done. There are a few such projects for ESP8266 in NodeMCU. So I started with NodeMCU upload.

ESP32 NTP OLED clock – [Link]

4chord MIDI Plays All the Hits

4chord MIDI – the USB MIDI keyboard to play every major hit pop song with four little buttons. by Sven Gregori:

4chord MIDI – the USB MIDI keyboard dedicated to play all the four chord songs, from Adele via Green Day and Red Hot Chilli Peppers to U2 and Weezer. Thanks to MIDI, you can be any instrument – and all of them at once. Yay!

4chord MIDI Plays All the Hits – [Link]

2.9″ ESPaper Lite Kit for $39.90

The 2.9″ ESPaper Lite Kit contains most of the parts you need to display data over wifi:

With the 2.9″ ESPaper module you can display data retrieved over WiFi on an ePaper with little effort. The integrated ESP8266 Wroom-02 module updates the 296×128 B&W ePaper display over the SPI bus. The module also features a charging circuit for LiPo batteries and a JST connector which allows you to run the module for weeks or even months from a battery. How long the module can be run from battery mostly depends on the update frequency and the battery capacity. In tests we could run the module from a 800mAh LiPo battery for several weeks by updating weather information every 20 minutes.

2.9″ ESPaper Lite Kit for $39.90 – [Link]

A Compact Camera Using Raspberry Pi A+ And Adafruit TFT Display

PiJuice at designed an interesting compact camera project with raspberry pi. Raspberry Pi A+ is used in this project as it is the cheapest and smallest available Raspberry Pi. The real challenge in this kind of portable Pi projects is powering the Raspberry Pi. This issue is solved using PiJuice—an all in one battery module for the Raspberry Pi.

Required Parts

Required parts to make Raspberry Pi compact camera
Required parts to make Raspberry Pi compact camera

Set Up The Raspberry Pi

Download the latest version of the Raspbian image from the Raspberry Pi Website and burn it on your blank SD card. You can use win32DiskImager or your favorite software to get the job done. Now, you need to install the drivers for the TFT screen by running the DIY installer script, explained on the Adafruit page. Connect the TFT to the Raspberry Pi, attach the PiJuice with a charged battery, and switch it on. Your screen now should display boot up messages.

Connect The Camera

Insert the ribbon cable of your camera module properly ensuring that the blue side of the ribbon is facing away from the HDMI port. Now, go to the terminal and type the following command,

sudo raspi-config

Enable the camera in the menu and then reboot the Pi. The camera should work properly after a successful reboot. To test the camera, enter the following command:

raspistill -o pic.jpg

This will take a snap and save it in the /home/pi directory.

Connect A Push Button

You need a push button to simulate a shutter action. Locate the pin 17 on the GPIO breakout on the top of the TFT screen. Now, solder two wires to the terminals of the push button. You can either solder a right angle header to the pin 17 or you can directly solder one wire from push button to that pin. There is a pad labeled WP on the board. It is actually connected to the ground. Solder another wire from the push button to this pad.

Install And Test The PiCam Software

To install the software, the Raspberry Pi must be connected to the internet. Enter the commands given below to download and install PiCam.

sudo apt-get install git-core
sudo mkdir PiCam
cd /PiCam
git clone git://

Once the software has been downloaded, navigate to the PiCam directory using the command:

cd /picam

You can run it by typing the command:

sudo python

Now, you can take pictures by simply pressing the push button. Once the button is pressed the picture will be taken. Once the captured image gets loaded, your photograph will be displayed.

Taking photograph with Raspberry Pi compact camera
Taking photograph with Raspberry Pi compact camera


Your Raspberry Pi camera is ready now. If you want to make it even more compact as well as portable, grab the official laser-cut compact camera case from the Kickstarter page by pre-ordering a Maker Kit. You can also build your own simple chassis for housing the camera.