l_gitlab_logo

My own cloud based version control tool

There is no second opinion about the importance of version control, it is a must-have for any software project. The option for reversibility, concurrency and history of code edits is what makes it so crucial. I’ve been using mostly GitHub for the purpose, it seems the version control tool of choice for many these days. I…

SSL

Free signed SSL certificate for my blog

As soon as I blogged about IoT and security few weeks ago, my blog got hit by a massive DDoS attack combined with daily hack attempts via WordPress’ backend and SSH. I’m dealing with both issues pretty successfully for now, but this is a reminder to myself to step-up on security. I’ve since then switched hosting this blog…

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DDoS attack on my blog

An intensive Distributed Denial of Service attack is currently undergoing on my blog, with HTTP request rates hitting thousands per minute. It all started few days ago when I received a message from my hosting service provider stating that my blog’s shared hosting has massive CPU/Bandwidth usage. The folks offered a solution for me that…

SiliconCroda

Tweeting silicon

Here is a fun project for I did couple days ago: a tweeting ESP8266. The typical approach when dealing with such task (and probably the better) is to use a proxy service like ThingSpeak’s ThingTweet, PushingBox or by building proxy yourself with Node-RED or mqttwarn. It is much more fun though to perform a direct tweet from a microcontroller. Just think…

IoT_security

Some thoughts on security in terms of IoT

Connected devices and sensors are the fastest growing sources of data. Billions of records are being generated daily around the globe and data transported across networks to be consumed where needed. Security of data in transit or at still in that context (especially when it comes to sensitive personal data) is quite important. Back in 2011…

FOTA

Firmware Over The Air (FOTA) for ESP8266 SoC

With the IoT booming nowadays, the number of connected devices grows exponentially and so does the related software that drives them. There is no doubt that Firmware Over The Air (FOTA) is a highly desirable – if not required – feature for any embedded project/product both DIY or commercial. Being able to provide a remote…

EC2

Physical vs Virtual

The Raspberry Pi, a $35 credit card sized computer, is a popular choice for home automation projects. I am running few of those at home myself. But what is the true cost of these, is the advertised cost of $35 really all you spend?  Before you know it, you throw in  more bucks for a decent power…

Funky v3 with RFM69CW

Funky v3 with RFM69CW using LowPowerLab’s RF69 library

I’ve already blogged about using Funky v3 and RFM-2-Pi with the HopeRF RFM69CW module, only I used it with JCW’s Jeelib as I wanted to keep compatibility with my existing RFM12B based sensor network. JCW has done great job in providing compatibility with the RFM12B by tweaking the chip’s registers so that it becomes an easy replacement. Felixs’s…

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Using RFM69CW instead of RFM12B

The rumors for RFM12B’s end-of-life two years ago seem to have been highly exaggerated now and the popular RF module is still available in abundance. HopeRF has introduced a pin-compatible upgrade, the RFM69CW. The module itself offers improved sensitivity and range compared to the RFM12B (+30%) at the cost of increased power consumption, making it probably a…