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Zeroshell - configurable OS for Raspberry Pi and Orange pi through web browserPrint

Zeroshell is small linux distribution which is used for servers.
The Zeroshell OS can be used like Live CD (for laptops and desktops) or like the running OS from microSD cards - especially for single-board computers.
The Zeroshell supports Raspberry Pi Zero, 2, 3 and Orange Pi Zero, R1, Plus, Plus2 and PC.
The settings of whole OS is available from your web browser...

IQRF Summit 2018Print

When: April 24 - 25, 2018
Where: Clarion Congress Hotel Prague

After the successful IQRF Summit 2017, the next edition will be held in April 2018. Come and see the progress in the Internet of Things field, projects IQRF Alliance members are currently working on, successfully realized pilot projects and opportunities for cooperation. Again, you can look forward to a lot of real solutions and products.

Very small DC/DC converter 5V up to 1APrint

The czech website DCCMM shared a post regarding very small PCB with switching voltage regulator. The output voltage is 5V and output current up to 1A.
The voltage ripple of regulator should be < 30mV and efficiency is up to 90%.

NanoPC-T3 - Octa-core, 2GB DDR3, eMMC storage, Gbps ethernet, WiFi&BTPrint

FriendlyARM released a new member to NanoPC family. NanoPC-T3.
So much power for $75 (without shipping).

SoC: Samsung S5P6818 Octa-Core Cortex-A53, 400M Hz - 1.4G Hz
PMU Power Management: Implemented by a Cortex-M0 MCU, support software power-off, sleep and wakeup functions
System Memory: 2GB 32bit DDR3 RAM
SD Storage: 1 x microSD Card Socket
Ethernet: Gbit Ethernet(RTL8211E)

STM32L4 Plus (STM32L4+) lower power consumption, more powerPrint

A new subfamily of L4 family microcontroller which is more powerful and also has lower power consumption of ARM Cortex-M4 which is called L4+ (STM32L4 Plus).

Original L4 which is based on Cortex-M4 achives up to 100 DMIPS and up to 80 MHz.

L4+ exceeds maximal frequency about 40 MHz - so, up to 120 MHz and in benchmark achives up to 150 DMIPS (up to 410 CoreMark).

Bolt IoT - first example and settingsPrint

The picture tutorial how to set and run Bolt IoT platform.

Info about Bolt IoT and kickstarter campaign was mentioned in this news. The base component is ESP8266 chip in ESP12S module. Other components are GREEN LED (cloud indication) and BLUE LED (WiFi indication, voltage regulator for 3.3V (LMS1117) and microUSB cabel which is used like power supply.
The main point of this project is SW part of Bolt IoT. Firmware of ESP8266 and cloud of the platform.

Whole tutorial is available on

Bolt IoT platformPrint

A new IoT platform for makers. Do you want to make IoT home? Check this platform called Bolt IoT.
Bolt IoT is not only hardware, that's a platform which also includes cloud and analyzation of data.
The hardware contains interfaces to WiFi. Bolt Cloud can be used for remotely configuration, monitoring and also controlling of your BolT IoT devices...

When do we need Analog Discovery, and when do we need Digital Discovery?Print

Digital Discovery is a crucial add-on if you have been using Analog Discovery 2, but its sampling rate was insufficient, there were not enough digital channels available, or there was too much noise to read data sent at higher speeds. See on a specific example what can be achieved with Digital Discovery.

Whole project is available on

My experience with WiDo WIFI nodePrint

Richard ?tef?n sent me the article, thanks a lot.

Recently I received IOT development board called WiDo by DFRobot. It's similar to Arduino Leonardo, but with a few extra perks like SD Card slot and CC3000 WIFI module.

The board for meteostation with ESP12E module (ESP8266, NodeMCU)Print

The article was updated - open-source 3D case for the board, radiation shield and one new example code (with OLED).

CH340E - USB-UART converter for 0.99USDPrint

If you like arduino boards with ATmega328, SAMD21 or ESP8266, you need USB-UART converter with DTR pin. The DTR pin is needed for uploading of your code. DTR is connected to reset pin of microcontroller.
cnx-software share a news about very cheap and small USB-UART converter with DTR pin - CH340E...

Atom X1 - really small board with SAMD21Print

We shared the smallest board called PICO: the smallest Arduino board (0.6x0.6") a few weeks ago. Now, it is not true.

The developers of Atom X1 made smaller board, but with SAMD21 microcontroller. The size of board is 14.9 x 14.9 mm. It is really small.

SinoVoip - BPI LoRaPrint

SinoVoip is not only single-board computers manufacturer. The SinoVoip is now manufacturer of interesting workarounds with different platforms.

SinoVoip released a few pictures of board called BPI-LoRa.

STM32 development boards to $5 (ebay and aliexpress)Print

I would like to show you a few development boards with STM32 and the price is lower that $5 (without shipping).

You can't expect the ST-LINK programmer and debugger, but the price is so friendly.

See more on

BananaPi M2 Magic (M2M) and Magic Plus (M2M Plus)Print

SinoVoip company released other single-board computer. This board is called Banana Pi M2M (M2 Magic).
The board contains:
Alwinner A33 (quad-core, @1.5GHz) ARM Cortex A7 processor
Male 400 MP2 GPU
512 MB DDR3...

Update & upgrade your armbian - WPA2 vulnerabilityPrint

The popular operating system armbian released the repair of WPA2 vulnerability called KRACK.

Follow these commands
sudo apt-get update
sudo apt-get upgrade

The description of vulnerability is on

Original tweet:

Dreamer Nano v4.1Print

Review of Dreamer Nano board, that's Arduino board with ATmega32u4 which is comaptible with Arduino Leonardo and the pinout of board is the same like Arduino Nano.

UPDATED: Nucleo 64: shield with sensor of COPrint

The STMicroelectronics company released info regarding shield with gas sensor of CO (carbon monoxide).
The pack is called P-NUCLEO-IKA02A1, the pack also contains Nucleo 64 board with STM32L058R8 microcontroller.

The shield contains gas sensor for CO and footprints for another gas sensors by Figaro comapny (PCD13,5, PCD17, Mini and TGS5141).

The gas sensor of CO which is used is Figaro TGS5141

Worldwide contest IQRF Wireless Challenge IV starts in October 2017Print

IQRF Alliance announces a worldwide contest IQRF Wireless Challenge IV.
?Test your skills, create a new application using the IQRF wireless technology and compete for valuable prizes?; this is a challenge for all technicians, programmers, developers, and students from all over the world.

The contest begins on October 1, 2017 and closes on March 25, 2018. The final competition of the best projects will be held in Prague in April 2018 at IQRF Summit 2018. The major rewards include modern development tools from the world of wireless technologies and IoT. To best technicians may be offered a job.

Arduino MKR WAN 1300 and MRK GSM 1400Print released two new boards called MKR. A few boards with MKR name are available in store. MKR FOX 1200 with IoT Sigfox module and basic board called MKR 1000 with WiFi WINC1500 module.