Seven new version of ESP32 modules are add to our web shop

esp32-wroom-32-01-2

We add to our web shop seven new ESP32 modules:

ESP32-WROOM-32D-4MB – this is equal to used by us ESP32-WROOM-32, it uses D0WD instead of D0WDQ6 which is with smaller size and Espressif recommend it for new designs.

ESP32-WROOM-32D-16MB  has 16MB of Flash

ESP32-WROOM-32D-4MBHT is High temperature +105C module for demanding applications.

ESP32-WROOM-32U-4MB is with U.FL connector for external antenna

ESP32-WROOM-32U-16MB has 16MB of Flash

ESP32-WROOM-32U-4MBHT is High temperature +105C module for demanding applications.

ESP32-WROVER-4MB has 4MB Flash and 8MB of PSRAM.

The high temperature modules are still not in stock as Espressif manufacture these now, but all others are in stock.

New univeral A20 image released which works with all our A20 boards and auto detect and configure on boot

d6ndarl

We are releasing universal A20 Linux image which will boot and work on all our A20 boards:

The image is based on Armbian with modifications necessary to support OLinuXino specific features.

There are two image releases – Ubuntu Bionic Desktop image which is the recommended image for beginners or when you want to evaluate the board’s hardware fully – it has good HDMI, audio support and Debian Stretch Server image which contains no binary blobs but is headless and has poor video and audio support.

Currently, our latest Ubuntu Bionic A20 image uses kernel 4.19.10, or to be more specific:

root@olinuxino:~# uname -a
Linux olinuxino 4.19.10-sunxi #5.65 SMP Tue Dec 18 14:19:16 EET 2018 armv7l armv7l armv7l GNU/Linu

Our Armbian Ubuntu Bionic image can be downloaded from FTP or Torrent.

Our Armbian Debian Stretch image can be download from FTP or Torrent.

Username is according to Armbian documentation: root and password: 1234

Since we have a large array of A20 boards and numerous variants there is auto-detection enabled in the image. Information about the model of the board is stored in the EEPROM of each A20 board that had been recently manufactured and this information is used by the new images to load the proper configuration. The EEPROM contents are described here.

The images can be used with boards from early revisions which has no EEPROM or has EEPROM with wrong content after one time set up of the EEPROM during in the first u-boot of the new image. If you have trouble booting interrupt u-boot by pressing space and type “olinuxino”. An example configuration for manually setting the EEPROM of A20-OLinuXino-LIME-e16Gs16MB hardware revision K is given at the end of the post.

The new images have support for both legacy resistive and new capacitive/resistive touch displays with auto detection feature (please bear with us they are not released yet on the web as we test them). The newer versions of the displays has suffix -CTS for capacitive touch screen and -RTS for resistive touch screen and are offered in 5″, 7″ and 10″ size with different resolutions. These displays are automatically detected by boot and drivers properly configured for them. If the LCDs are not detected HDMI output is only enabled and the image can be configured one time at first boot manually as described in this wiki article.

Please note that mainline Kernel now do not support NAND Flash, so if you wish to boot from the flash memory, consider either using the legacy 3.4.xx images which are still available or switch to A20 boards with eMMC. The eMMC boot is supported via armbian-config (nand-sata-install). Due to lack of reliable eMMC 5.X support by Allwonner boot0 and for future compatibility we are adding 16MB SPI flash for all A20 boards with eMMC, this way the board first boots from the SPI then continue to eMMC with properly set configuration. Allwinner Boot0 can’t handle correctly eMMC 5.X and sometime boot sometimes do not boot, as this is binary blob inside SOC there is nothing we can do than to use SPI boot to fix eMMC boot parameters.

Build instructions for the new images can be found here.

An example configuration for manually setting the EEPROM of A20-OLinuXino-LIME-e16GB hardware revision K is given below:

=> olinuxino 
olinuxino - OLinuXino board configurator

Usage:
olinuxino config info - Print current configuration: ID, serial, ram, storage, grade...
olinuxino config list - Print supported boards and their IDs
olinuxino config erase - Erase currently stored configuration
olinuxino config write [id] [revision] [serial] [mac]
arguments:
[id] - Specific board ID
[revision] - Board revision: C, D1, etc...
[serial] - New serial number for the board
[mac] - New MAC address for the board
Format can be:
aa:bb:cc:dd:ee:ff
FF:FF:FF:FF:FF:FF
aabbccddeeff
olinuxino monitor list - Print supported video outputs
olinuxino monitor set - Set specific LCD

=> olinuxino config list

Supported boards:
----------------------------------------
A20-OLinuXino-LIME - 7739 
A20-OLinuXino-LIME-n4GB - 7743 
A20-OLinuXino-LIME-n8GB - 8934 
A20-OLinuXino-LIME-s16MB - 9076 
T2-OLinuXino-LIME-IND - 9211 
T2-OLinuXino-LIME-s16MB-IND - 9215 
T2-OLinuXino-LIME-e4GB-IND - 9219 
A20-OLinuXino-LIME2 - 7701 
A20-OLinuXino-LIME2-e4GB - 8340 
A20-OLinuXino-LIME2-e16GB - 9166 
A20-OLinuXino-LIME2-n4GB - 7624 
A20-OLinuXino-LIME2-n8GB - 8910 
A20-OLinuXino-LIME2-s16MB - 8946 
A20-OLinuXino-LIME2-e16Gs16M - 9604 
A20-OLinuXino-LIME2-e4Gs16M - 9613 
T2-OLinuXino-LIME2-IND - 9239 
T2-OLinuXino-LIME2-s16MB-IND - 9247 
T2-OLinuXino-LIME2-e4GB-IND - 9243 
A20-OLinuXino-MICRO - 4614 
A20-OLinuXino-MICRO-e4GB - 8832 
A20-OLinuXino-MICRO-e16GB - 9042 
A20-OLinuXino-MICRO-e4GB-IND - 8661 
A20-OLinuXino-MICRO-IND - 8828 
A20-OLinuXino-MICRO-n4GB - 4615 
A20-OLinuXino-MICRO-n8GB - 8918 
A20-OLinuXino-MICRO-s16MB - 9231 
T2-OLinuXino-MICRO-IND - 9223 
T2-OLinuXino-MICRO-s16MB-IND - 9235 
T2-OLinuXino-MICRO-e4GB-IND - 9227 
A20-SOM-n4GB - 4673 
A20-SOM - 7664 
A20-SOM-IND - 8849 
A20-SOM-n8GB - 8922 
A20-SOM-e16GB - 9155 
A20-SOM-e16GB-IND - 9148 
T2-SOM-IND - 9259 
A20-SOM204-1G - 8991 
A20-SOM204-1Gs16Me16G-MC - 8958

=> olinuxino config write 9166 k

Erasing EEPROM configuration...
Writting EEPROM configuration...
Writting MMC configuration...

=> saveenv

Saving Environment to EXT4... Recovery required
update journal finished
done
OK

=> reset

First Steps with Snap4Arduino and eduArdu tutorial in Bulgarian and video is GitHub

Screenshot from 2018-12-20 14-22-20

Our Bulgarian customers often blame us that we post and make documents in English, but we really think that if one decided to work in IT industry and deal with programming and electronics should learn English and supporting documentation in two languages just double the burden for us.

eduArdu is educational board targeting kids so it’s a different story. This is why we made small tutorial how to use eduArdu with Snap4Arduino in Bulgarian language and uploaded it to GutHub in PDF and ODT format.

On Youtube we uploaded video for the same with English text.

So we hope now both English and Bulgarian customers will be pleased 🙂

We just uploaded on Youtube video for eduArdu features and how to install and use the Arduino examples from GitHub

eduArdu OSHW educational board is in stock

eduArdu-1

Right before Christmas we got eduArdu in stock!

All hardware sources and software libraries and demo codes are now on GitHub

If you come to our workshop this Saturday (15/12/2018) you may download and install in advance Arduino IDE, Snap4Arduino and the demo codes for eduArdu.

We made another pack of eduArdu named eduArduQS (quick start), two servo motors, LiPo1400mA battery, USB-micro cable, and pack of 7 cables with crocodile clamps for makey-makey like experience.

eduArdu-QS

NB-IoT seminar slides and BC66 datasheets are online

92_nb_iot

NB-IoT seminar by Quectel and Comet had more than 130 peoples interested. The hall was full even with people not having place to sit.

It’s understandable as NB-IoT is one of the fastest developing technology.

NB-IoT is new, the standard draft was made in July 2015 and at the beginning of 2016 already has been accepted, just in 6 months.

nb-iot

For comparison LoRa is technology from 2008, but just last couple of years people start using it widely. The other LPWAN Weightless was announced in 2012 but first ever devices were made in July 2017.

Why NB-IoT was developed so fast?

Because Qualcomm, Vodafone, Ericsson and Huawei which are major player in mobile networking are behind it. NB-IoT works with the existing cellular network base station hardware. In practice it’s lightweight LTE implementation and just uses narrow band communication. So to add support for NB-IoT only software upgrade is necessary and it uses the existing infrastructure.

Another boost for NB-IoT is that it was first choice for IoT implementation in China as product with Chinese company (Huawei) involved vs LoRa which is considered technology controlled by US company.

quectelq

According to Quectel slides they sold in 2017 36 million modules for about 245 million USD i.e. average price per module is USD 7 which is already in LoRa pricing range.

NB-IoT though offers lot of advantages compared to LoRa. The Narrow Band communication allow the receiver sensitivity to increase many times and with one base station is possible (from the slides) to cover up to 100 km with NB-IoT. Also one single cell base station can serve up to 100 000 NB-IoT nodes!

coverage

Quectel flagman for NB-IoT is BC66

bc66

It’s Multiband: B1+B2+B3+B5+B8+B12+B13+B17+B18+B19+B20+B25+B26+B28+B66 i.e. covers completely all regions US, EU, Asia, Africa, Australia and once you do your design you can scale worldwide.

Anothe major advantage is that it works from 2,1 up to 3.6V. This is very important as Lithium batteries capacities usually are defined when battery is discharged from 3.0 to 2.0 V.

NB-IoT is different from 2G/3G where there are 2A pulses when link to base station is eastablished, here max current drawing is only 250mA when you establish link to base station. Once established link do not need to be re-connected when the module go to PowerSavingMode and wake ups!

Screenshot from 2018-12-07 12-19-10.png

This is why their recommended design has just 100uF filtering capacitor necessary!

Another nice surprise is that in BC66 you have Cortex-M4 78Mhz ARM processor with 400KB Flash and 400KB RAM running FreeRTOS, which you can use for your own applications. There is also ARDUINO support:

Screenshot from 2018-12-07 12-23-03.png

Overall BC66 seems very interesting and we are dedicated to release OSHW boards with it targeting same applications like with LoRa: Smart metering, Parking, Smart City, Industry 4.0 etc.

Who ever have dealt with Chinese vendors know how they hide all info from their potential customers, in this regard Quectel made difference by releasing all BC66 info online after the seminar. You can view all presentations and the datasheets here.

 

First Steps with eduArdu workshop on 15th of December!

eduArdu

On December 15th together with our friends from TuxCon we will make workshop with our new educational board eduArdu in Olimex training building.

If you want to be part of this even come and join us, the event is free to participate.

We will show you how to use all eduArdu features with Arduino and Snap.

Be prepared to play games with fruits and people-touch, to make animations with LED matrix, to generate music, detect intruders with the PIR sensors, to switch on and off air conditioners and even create music instruments!

Educators may apply for free board which to receive at this event.

 

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