Iot

Espressif announced on 05/11/2015 the upcoming ESP32 chip:

 

While the specs are impressive a lot of questions a rise :

• Support – Espressif is a small company as far as we knew – would they be able to support both chips in the long term?
• Compatibility with esp8266?  – The new ESP32 will use the RTOS based SDK and most APIs are said to be compatible with the esp8266 SDK.
• Price – The price will be higher than esp8266  but not much higher.

Beta testing program is coming soon.

A Teaser of What to expect from our upcoming WiFi connected 2 channel relay board.

Web UI of the relay board

Main control screen and part of the configuration

Main control screen

Part of the configuration

Schedule editor

While working on a secure cloud for the gang of the esp8266 based devices we are developing we need SSL – real and secure.

And this August is the month of the SSL issues , it seems , but thankful to the Espressifs’ quick support they are on the way out.

SSL Memory Leak

The latest SDK v1.3.0 introduced a bug that simply didn’t call the disconnect callback of esp connections under some circumstances and that in turn leaked memory.  It’s not clarified but the case was when you had a tcp listener and ssl connection after the ssl connection is over, your tcp listener connections did receive disconnect callbacks anymore.  You can get the fix from bbs.espressif.cn

Hi,

I have signed the IoT Design Manifesto – if you are into IoT. You should too.

Here is the link Sign The Manifesto.

These are the highlights of it:

1. We do not belive the hype!
2. We design useful things!
3. We aim for the win-win-win!
4. We keep everyone and everything secure!
5. We build and promote a culture of privacy!
6. We are deliberate of what data we collect!
7. We make the parties associated with an IoT product Explicit!
8. We empower users to be masters of their own domain!
9. We design things for their lifetime!
10. In the End We Are Human beings!

 

Engineering Internet Of Things Secure network  for our upcoming IoT service.

Goals:

• Security
• Redundancy
• End to End Security
• Secure Firmware Upgrades

Threats:

• DoS Attacks
• DDoS Attacks
• DNS spoofing /don’t even think of DynDNS/
• Sniffing
• man in the middle

Security:

• Using a VPN -> takes the problem away and requires extra settup. Not user friendly. The only pro is that it can use an existing infrastructure if present. A Big NO
• SSL -> expired certificates , heavy overhead, often exploited. Closed source library, may already be hacked. NO
• AES all the Way. A big YES
• DoS/DDoS prevention – redundant MQTT brokers, with dns/firmware fallback

So Why AES?

I need a bigger flash and a breadboard friendly board. Quick research lead to the following variants, beside soldering a bigger flash on the ESP-XX series modules.

1. NodeMCU board’s that have bigger flash and fit on a breadboard but have regulators and usb 2 serial on them.
2. ESP-XX module with adapter,  don’t like .
3. MOD-WIFI-ESP8266-DEV

And the winner is Olimex’s – MOD-WIFI-ESP8266-DEV .

i got some of them:

The esp8266 chip is made by Espressif Systems.

ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.

The chip have both certifications FCC and CE. You can sell your products to the mass market.

Current focus is on the Internet Of Things hype.

Why call it a hype?

A lot of people were doing it for the past decades – just like anything that gets conquered by the internet.

So now is time to connect it.

What to connect:

• Your Door Bell
• Your presence at every room
• Your fridge
• Your car
• Your house
• Your appliances
• Your …. dog ?