Olimex ESP8266 module – MOD-WIFI-ESP8266-DEV

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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:

<img class="alignnone size-medium wp-image-65" src="/wp-content/uploads/2015/06/oli6-300x169.jpg" alt="oli6" width="300" height="169" srcset="/wp-content/uploads/2015/06/oli6-300x169.jpg 300w, /wp-content/uploads/2015/06/oli6-1024x576.jpg 1024w, /wp-content/uploads/2015/06/oli6.jpg 1280w" sizes="(max-width: 300px) 100vw, 300px" />

Cardboard boxes and the modules within packed in real anti static bags.

<img class="alignnone size-medium wp-image-76" src="/wp-content/uploads/2015/06/antistatic-web-300x169.jpg" alt="antistatic-web" width="300" height="169" srcset="/wp-content/uploads/2015/06/antistatic-web-300x169.jpg 300w, /wp-content/uploads/2015/06/antistatic-web.jpg 1024w" sizes="(max-width: 300px) 100vw, 300px" />

 

I’ve soldered the headers, with chip on top – looked natural. But the GPIO  silkscreen markings got hidden at the bottom of the module – i think it’s better for development to have them on top, shorted out text is OK.

<img class="alignnone size-medium wp-image-68" src="/wp-content/uploads/2015/06/oli3-300x169.jpg" alt="oli3" width="300" height="169" srcset="/wp-content/uploads/2015/06/oli3-300x169.jpg 300w, /wp-content/uploads/2015/06/oli3-1024x576.jpg 1024w, /wp-content/uploads/2015/06/oli3.jpg 1280w" sizes="(max-width: 300px) 100vw, 300px" /> <img class="alignnone size-medium wp-image-67" src="/wp-content/uploads/2015/06/oli4-300x169.jpg" alt="oli4" width="300" height="169" srcset="/wp-content/uploads/2015/06/oli4-300x169.jpg 300w, /wp-content/uploads/2015/06/oli4-1024x576.jpg 1024w, /wp-content/uploads/2015/06/oli4.jpg 1280w" sizes="(max-width: 300px) 100vw, 300px" />

There are  two rows left on both sides of the the breadboard.

<img class="alignnone size-medium wp-image-70" src="/wp-content/uploads/2015/06/oli1-300x169.jpg" alt="oli1" width="300" height="169" srcset="/wp-content/uploads/2015/06/oli1-300x169.jpg 300w, /wp-content/uploads/2015/06/oli1-1024x576.jpg 1024w, /wp-content/uploads/2015/06/oli1.jpg 1280w" sizes="(max-width: 300px) 100vw, 300px" />

So, let’s see what the extra flash is good for.

SSL – Is SSL the right solution for #IoT?

FOTA  – What about the FOTA upgrades security?

Going down the rabbit hole it seems that the MOST important and hard part of a IoT implementation is to get the security right. So the extra flash will present an opportunity to test to some ideas on how to do it. And we need it for the service we are building – it’s just vital to have and to have it right.