Writing applications for OLinuXino with GTK

GPIO

Many times I hear from customers – Linux has no good UI, it’s made for servers but we want to make apps with windows drop boxes, check boxes etc.

Recently we found Simon Long’s C GUI Programming book and made two “windows” examples for OLinuXino.

We recommend you first to download the book and read it then to look at the code we made and uploaded to GitHub.

In the README.TXT you will find step by step instructions how to install and configure GTK for OLinuXino.

Then you can try the code and modify for your need.

GPIO example allow you to read or write GPIO state to any of the GPIO connectors of OLinuXino.

I2C example will allow you to interface to any of our UEXT boards with I2C interface. The example we test with MOD-IO.

I2C

eduArdu OSHW educational board new demo and tutorial updated on GitHub

eduArdu-3

The eduArdu-BotKit demo is uploaded on GitHub. This code control the robot with sound.

New LED_Matrix_Light library is uploaded. It contains only Clear, SetPixel, GetPixel, ClearPixel, Line, DrawRectangle, UpdateMatrix functions and do not take lot of memory like the LED_Matrix library which contains text scrolling and fonts.

Two more demo for capacitive buttons are add. One make sound depend on capacitance, the other prints the value of the capacity measured.

Programming eduArdu with Arduino explains how to install Arduino and some basics of programming for beginners, like what are arrays, variables, etc. It may be used as practice of what is learned in C/C++ class in school.

How to choose best LCD for your Linux computer? This is why we made LCD-OLinuXino selection guide

LCD10-METAL-FRAME-1

LCD-OLinuXino selection guide will help you to select best solution for your OLinuXino Linux SBC.

Inside we explain the different LCD connectors available in OLinuXino.

What LCD variants are available: 4.3″, 5″, 7″, 10.1″, 15.6″.

What signals are there when the interface is RGB or LVDS on the 40 pin connector.

How we implement plug and play capability with our latest Linux images and LCD driver boards, so you do not have to configure the LCDs, but they are recognized at boot time and all drivers configured.

What are the pro and cons and differences between resistive and capacitive touch screen technologies.

How to enable digital touch interface on A20 boards.

How to configure the software and drivers for the older LCD driver boards.

 

 

OLinuXino Open Source Hardware Single Board Linux Computers are now officially OSHWA certified

Ax0-OLinuXino-LIME-1

OLinuXino Open Source Hardware Linux Computers now are officially OSHWA certified. The first: A13-OLinuXino, A10-OLinuXino-LIME, A20-OLinuXino-LIME, A20-OLinuXino-LIME2, A20-OLinuXino-MICRO has their assigned OSHWA certification numbers, the others are to follow as the process takes time.

Screenshot from 2019-07-08 14-30-06

Searching the OSHWA directory only Beagle Bone and OLinuXino are officially certified.

ESP32-POE-ISO passed RED,EMC, Helth and Safety tests necessary for issue of CE marking

ESP32-POE-ISO-2

We are proud to announce that ESP32-PoE-ISO board has passed successfully all necessary tests to bear CE marking:

  • EN 62311:2008 RED Health
  • EN 62479:2010 RED Health
  • EN 301 489-1 V2.2.1 (2019-03) RED EMC
  • EN 301 489-17 V3.2.0 (2017-03) RED EMC
  • ETSI EN 300 328 V2.1.1 (2016-11) WIFI-2.4GHz band radio test
  • EN 300 328 V2.1.1 (2016-11) BLE radio test
  • IEC 62368-1:2014 Safety

ESP32-EVB, ESP32-GATEWAY, ESP32-DevKit-Lipo, ESP32-POE are also going to be tested.

 

eduArdu-BotKit transforms your eduArdu in small bot

eduArdu-4

eduArdu-BotKit consist of two continual rotation servo motors, two 32mm wheels, ball wheel and converts eduArdu in small robot:

eduArdu-3

Here is small video clip of small demo how to control eduArdu robot with clap of your hands.

OSHW High precision calibrated digital air quality CO2, temperature, humidity, air pressure sensor board with UEXT connector

MOD-ENV4

Analog gas and air quality sensors have quite negligent readings. They need special calibration to measure correctly.

This is why CCS811B digital air quality sensor by AMS is so interesting. It can measure indoor air quality and CO2 content with digital readings from 400 up to 29206 ppm.

MOD-ENV has CCS811B and BME280 digital precise temperature, humidity and air pressure sensor assembled together. Both operate through I2C and are low power with sleep modes which makes them perfect for enviroment monitoring and IoT.

ESP32-POE, ESP32-POE-ISO, ESP32-EVB has UEXT connectors and can directly connect to MOD-ENV.

The price of MOD-ENV is between EUR 14.36 and 15.95 depend on quantity.

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