On November 23rd I was contacted by the Head of Marketing & BD of Onion, producers of the Omega IoT nodes. He asked whether I “would be interested in writing a blog about our product, the Omega2, the world’s first IoT Computer and a $5 Linux development board with built-in WiFi.” About a week before […]
I was recently contacted by a fellow Swiss IoT hacker about a new offering to transfer the NodeMCU firmware to ESP-01/07/12 modules. He created a self-contained hardware setup that allows you to easily to plug in those modules for the data transfer. There’s a Kickstarter campaign currently running to develope it beyond the state of […]
NodeMCU on ESP8285 is a perfect match as I found out last night. Yes, you got that right NodeMCU on ESP8285 not ESP8266. In this post I’ll talk a little bit about Espressif’s new ESP8285, about a development board with that SoC and give you instructions how to run the NodeMCU firmware on it. It […]
This is just a quick heads-up to let you know that I’m working on a MAX7219 library for NodeMCU. In October last year I first experimented with MAX7219 8×8 matrix displays. Ever since then I wanted to create a library that would support daisy-chained displays and a few text animations. I finally kicked myself in […]
In this article I am going to review the book ”Building an IoT Node for less than 15 $” by Claus Kühnel. TL;DR “Building an IoT Node for less than 15 $” is the book I wish I had had when I started my endeavor into the IoT/ESP8266/NodeMCU world in May 2015. I covers everything […]
Looks like I need to update my popular article about ESP8266 development boards once again. I just found out that Adafruit sells what seems like a really cute development board with LiPo connector: the Adafruit Feather HUZZAH ESP8266, what a name. The ESP module seems to be an ESP-12E, it’s definitely got 4MB flash memory. […]
Since the awesome devsaurus recently fixed important SPI issues (#50 is from Christmas 2014!) in NodeMCU it’s now possible to run MAX7219 8×8 LED matrix displays with an ESP8266 and the NodeMCU firmware. Connect NodeMCU with MAX7219 display According to the pin layout for the NodeMCU dev kit v1 and v2 (see comparison) you need […]
DOIT, the Doctors Of Intelligence & Technology, ride the ESP8266 NodeMCU wave a bit differently. The have been producing 2nd generation ESP8266 NodeMCU development boards for a while now. Recently they developed a new kit that uses more or less the same board but with a Cortex-M4 chip instead of an ESP8266. It goes by […]
A comparison of ESP8266 NodeMCU development boards must inevitably also compare the ESP8266 chips used on those boards. The comparison can be confusing not because there are many different boards (there’s only 3) but because there are several names for the same thing. Since this article has become quite long, and to give you an […]
If you want to build custom NodeMCU firmware for the ESP8266 (Wikipedia) I suggest you don’t build it yourself but have it built instead by a configurable online service: http://nodemcu-build.com. All you have to do is define the branch from which to build and the user modules to include and… Hey Presto! there’s your personal […]