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Time4EE - news and articles about EE. Arduino, STM32, Raspberry Pi, Banana Pi, CHIP computer, ESP8266, AVR, IoT, SBC, Embedded Systems
 
 
 
 
We know the CHIP computer, we connected to WiFi, we used UART, we tried WiFi speed connection and USB flashdisc, we measured power consumption during the boot and after boot and we blinked with LED.
Today, we use USB webcam. At first I wrote that's very easy and you can you use it for a Raspberry Pi Zero, a Raspberry Pi, a BeagleBone, an Odroid and another SBC's, where you use a debian or fork of the debian (an ubuntu, a minibian etc.). It's very simple.

The article there: http://time4ee.com/articles.php?article_id=31
 


The name of Teensy is well-known.
After Teensy 1.0 and 2.0, which included microcontroller by Atmel company (AT90USB162 v1.0 and ATMega32U4 in v2.0) came the first kickstarter's Teensy 3 in 2012. It included 32 bit microcontroller.
Then (2014) the world saw Teensy 3.1 and 3.2.
If you still don't know what Teensy is, so, it is development board which is supported in Arduino IDE...
 
I found my small project - actually one bash script. You can use it for uploading your *.bin file (from your IDE) to Maple Mini.
Instructions:

http://time4ee.com/articles.php?article_id=30
 
EasyEDA. It is a free web-based tool for schematic capture, PCB layout, and circuit simulation. The best part of any cloud- or web-based development tool is that it runs on a remote server (no worries to install on local machines), always up to date, and is accessible from anywhere through internet. EasyEDA is a zero-install cloud-based EDA application; all you need is a web-browser and internet connection and you are ready to draw circuits, run SPICE simulation, design PCBs, and even place an order for fabricating PCBs. I have a very pleasant learning experience playing with it for a couple weeks and I found the learning curve wasn’t too steep.

http://time4ee.com/articles.php?article_id=29
 
Espressif released first version of datasheet for ESP32 module.
ESP-WROOM-32 is powerful WiFi-BT-BLE MCU module with target get a lot of makers and designers.

Module integrates Bluetooth, Low Energy Bluetooth (BLE) and WiFi. ESP32 chip contains 2 CPU, which could be individually controlled. Clock frequency can be adjustable from 80 MHz up to 240 MHz. The user can off CPU and use only low-power coprocessor for monitoring of peripherals and wakes up CPU after crossing of threshold or peripherals activity ...
 


The website http://www.cnx-software.com shared very interesting news. The Alternative to very popular WiFi chip - ESP8266 (ESP-12, ESP-01 and another.) which is called RTL8710.
Generally, we can say that ESP8266 (and modifications of this) is the most popular WiFi chip ever, hence the ESP8266 has huge community support.
If you use the ESP8266 maybe you found limits of this component and so Espressif Systems released new WiFi chip - ESP8285. Website hackaday.com wrote that's ESP8266 killer. Nevertheless, check this very interesting WiFi chip - RTL8710 by Realtek company.
...
 
Onion Omega2 caused interest by makers and developers. So, I found a few videos (tutorials) about that on youtube. I hope it could help you with your decision if you buy that or how to begin. Videos are about - Onion Omega....
 


New kickstarter project after very popular Onion Omega called Onion Omega2 in two version.
What we can except from $5 device?
580 MHz CPU
64 MB Memory (128 MB Memory for Omega2 Plus)
16MC Storage (32 MB Storage for Omega2 Plus)
USB2.0
MicroSD slot
WiFI 802.11b/g/n
...

 


We flash new OS, install the python and we will blink LED.
And how do you know that CHIP computer is ready? The LED will blink.

Article there: http://time4ee.com/articles.php?article_id=28
 


Developers from ArduCAM created modified Raspberry Pi. The board has a 24 x 24 mm and contains:

SoC – Broadcom BCM2835 ARM11 Processor @ 700 MHz (or 1GHz?) with Videocore IV GPU
System Memory – 256MB/512MB LPDDR2
Storage – micro SD card slot ...
 


Another article about CHIP computer.
In this article find speed of USB, WiFi, current consumption (during boot and after boot), log from boot pictures from thermal imager.

Article there: http://time4ee.com/articles.php?article_id=27
 
Hooray. Another article is on the world.
How to connect to WiFi, using SSH, using UART and how to connect CHIP computer to display/TV.

You get cabel for composite input with CHIP computeru. Default setting is NTSC norm, but in a lot of countries is PAL norm. Nevertheless, it will work - black and white screen. Connect YELLOW cinch cabel to Y composite input (Video In).

The article there: http://time4ee.com/articles.php?article_id=26
 
How you could see on social networks, I recieved CHIP computer. Very popular kistarter project.

But I would like to show comparison between CHIP computer and Raspberry Pi Zero - pizero.
You find some important articles and pictures in this article.

In next article, you will find first boot, connection to WiFi with and without display, connection through SSH and through UART and maybe more.

Article is there: http://time4ee.com/articles.php?article_id=25
 


Next SBC (single-board computer) with 64bit core.
Banana Pi M64 project is again open-source. The main component is quad-core proccessor Allwinner A64 (64 Bit Quad Core ARM Cortex A53 1.2 Ghz CPU).
On the board BPI-M64 is WiFi 802.11/b/g/n and Bluetooth 4.0.
Amount of SDRAM is 2GB DDR3 and storage for OS and data is 8 GB eMMC (option 16/32/64 GB) or microSDXC card (up to 256 GB). As GPU is used dual-core Mali 400 MP2 - support 1080P 4K video.
CSI interface for camera and DSI interface display is ready on the board.
You can use 10/100/1000 Mb ethernet (?through USB?), 3x USB2.0 a 1x USB2.0 OTG.
3.5 mm jack stereo konektor is used for audio output.
BPI-M64 can be powered 5V/2A or 3.7V Li-Ion battery.

Another information: https://bananapi.gitbooks.io/bpi-m64/content/en/
 


So... somebody will release some Arduino board every week.
Today, I would like to introduce new Arduino board called Fireboard.
Combine Arduino, Dual-core Cortex-M3, low power wifi module and price $15 (one Fireboard + 8GB TF card) can be very good idea.
This board contains also audio module.
Designers maked support code in Arduino IDE. If you don't like programming, you can use graphical tool for creating of code - FireBlock.
The microprocessor is Rockchip RKNanoD....
 


Wireless Oscilloscope Probe - Aeroscope very insteresting project on www.crowdsupply.com.
Wireless oscilloscope probe sends measured data to the mobile phone or tablet, which contains software for showing measured data.

Wireless oscilloscope probe includes battery (950 mAh / 3.7 V). The battery has energy to supply the device one full day. It has a wireless range of up to 200 feet.

Parameters:
Analog Bandwidth: 100 MHz
Sample Rate: 500M samples/second...
 
Everybody has meteostation... somebody better, somebody worse. I wanted meteostation too.
I didn't spend a time with development of sophistic device. My requirements was very easy - measurement temperature, humidity and use SHT75, because I got that as a sample from http://www.soselectronic.com/ (thanks a lot).

http://time4ee.com/articles.php?article_id=24
 


IoT (Internet of Things) very well-known idea. You can find a lot of system, concepts and another.
On the world will be a few billion devices connect to internet network during a few years.

This new project is focused on secure communication and a lot of using.

The projekt BigClown is based on STM32L083CZ microcontroller by STMicroelectronics with random number generator with AES128. As the cryptographic unit is used ATSHA204 by Atmel company.
The board includes SPIRIT1 - SPSGRF-868 for communication - receiving and transmitting MQTT messages. These messages are compressed and crypted.

The concentrator can be used every computer like Raspberry Pi or Turris Omnia. The concentrator is device for receiving, transmitting, gate to internet and another functions....
 


STMicroelectronics released a new development board with STM32F769NIH6 (ARM Cortex-M7, 2MB FLASH, 512+16+4KB RAM) microcontroller.
STM32F769 supports up to 216MHz clock frequency and up to 462 DMIPS in benchmark test.
STM32F7-discovery contains ST-LINK/V2-1.

4" capacitive touch LCD display with MIPI® DSI connector is mounted on the board. It also contains SAI audio codec, two audio line jacks, one for input and one for output, stereo speaker outputs, Four ST MEMS microphones on DFSDM inputs, Two SPDIF RCA input and output connectors.

The board includes two push buttons (user and reset) and also 512-Mbit Quad-SPI Flash memory and 128-Mbit SDRAM.
You can connect microSD card through microSD card slot.
If you want to use WI-FI connection, the board contains connector for ESP8266 (pinout compatible) or you can ...

 
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