USB-ISO USB 2.0 Full Speed insulator passed all EMC tests in certified laboratory and now can bear CE mark!

USB-ISO-01

After our first product which pass CE requirements (ESP32-POE-ISO) now we are happy to announce that we have second product which pass CE standard tests.

USB-ISO have been tested and passed these standards tests in certified laboratory:

  • EN 55032:2015
  • EN 55035: 2017
  • EN 61000-3-2: 2014
  • EN 61000-3-3: 2013

usbisotst

So it can be now CE marked.

 

Are you ready to play with Do-It-Yourself Alexa Speaker, WiFi SIP phone, WiFi walkie-talkie, Internet Radio player and broadcasting? Then the Open Source hardware ESP32-ADF is the right board to start with!

ESP32-ADF

With ESP32-WROOM-B module with 8MB RAM and 4MB of Flash, two microphones, two 3W speakers, codec, amplifier, Lipo charger, USB with programming, Audio 3.5mm jack, ESP32-ADF board offers everything you need to start playing with Espressif Audio Development Framework.

Today we made our first Alexa prototype:

and we spoke with ESP32-ADF running WiFi SIP phone, you do not need PC to make free calls all around the world to other people with VoIP phones!

Surprisingly there was no any lag caused by the WiFi and it works as good as the commercial wired SIP VoIP phones.

We add now MOD-LCD2.8RTP with touch screen on ESP32-ADF UEXT connector and write some nice graphical UI then will upload the VoIP phone demo code next week.

We do same for the Internet Radio player demo – nice graphical UI, so user can select which radio station to connect to.

 

New Open Source Hardware board adds SATA drive connectivity to any computer with USB host

USB-SATA

USB-SATA is board which connects to any computer with USB host and bridge it to SATA Hard disk.

The read/write speed with USB2.0 host is approx 30MB/s.

USB-SATA has USB device connector, SATA connector and power connector, when used with SATA-CABLE-SET it can drive directly SATA-HDD-2.5-500GB

It’s very convenient when you have to move large files from one computer to another you can just plug big HDD with it and use it as “giant USB Flash storage” it works faster than the USB Flash disks and can have way larger capacity.

Lime2-SD add on board for second SD card on A20-OLinuXino-LIME2

Lime2-SDa.jpg

Lime2-SD is small add on board which snaps on GPIO-1 connector and add second SD card to A20-OLinuxino-LIME2. It doesn’t interference with other parts on the board and do not increase the height.

Lime2-SD

Why we do this? Because this is an easy way to increase storage for Pioneer-FreedomBox-HSK . What we are preparing to offer soon is upgraded version of the Home Server Kit with 256GB storage made with 2 “disks” x 128GB micro SD cards. For these who already have Pioneer-FreedomBox-HSK they still can upgrade by ordering Lime2-SD .

Note that support in FreedomBox for Lime2-SD is not add, but you can try Lime2-SD with the current Armbian image for LIME2. To enable the Lime2-SD support you also have to add this dts overlay .

 

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.

 

 

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