Category "analysis"

Fenderino, the coolest guitar

Last February 7 I attended a workshop at a the SokoTech in Barcelona to assemble my own Fenderino, the coolest guitar ever (my knowledge about guitars is very limited, so take this sentence with a grain of salt). The guitar is actually a shield for the Arduino UNO and has been designed by the people at abierto.cc, an initiative aimed to provide open(-sourced) tools for educators, created amongst others, by David Cuartielles, co-founder of Arduino....

KK2015 based Ai Light

Really busy these days. I have some drafts ongoing but I wanted to publish this short post right away. One of the readers of this blog, Michel Clavette, sent me these pics just yesterday. He bought 5 Ai Light bulbs and to his surprise two of them do not have an ESP8266 microcontroller but instead this IC labelled KK2015. KK2015 powered Ai Light. Picture by Michel Clavette It looks like a drop-in replacement for the ESP8266 since it has the same footprint and all the other components are (apparently) the same....

ESP8266 Multi-relay boards: Sonoff Dual and Electrodragon

November was a busy month and the Sonoff Dual that IteadStudio kindly sent me to review was bored in a box waiting for some free time. But it was just fair that another board that has been waiting in the boards-to-review box for longer had it’s chance to have some fresh air too. So here we have the Itead Studio Sonoff Dual and the Electrodragon ESP Relay Board face to face....

The Sonoff POW

Some months ago I wrote about a hack I did to one of my Sonoff devices to be able to use a simple current sensor to monitor my washer machine process and alert me whenever my laundry was done. A few weeks ago Itead Studio released two new models for their Sonoff line, the POW and the DUAL. And the POW is Itead’s answer to my hack. I’m not saying they copied me, just that the Sonoff POW makes my hack utterly unnecessary....

Sonoff TH10 & TH16: sensors, displays, actuators,...

Itead Studio keep on creating interesting products for the hacker community. A few weeks ago a new version of the already classic Sonoff TH came to life. This new version comes in two flavours: the Sonoff TH10 and TH16 and you can buy them at Aliexpress: Sonoff TH 10A/16A Temperature And Humidity Monitoring WiFi Smart Switch. In this article I will briefly talk about what’s new in this device to quickly go to explore one of those novelties: it’s external interface....

4Duino-24 upside down

A few weeks ago the 4D Systems announced one of its latest products: the 4Duino-24, an Arduino compatible display module with built in 240x320 resolution TFT LCD Display with Resistive Touch and an ESP8266 ESP-06 module on board. it looked like a great product for a home automation control panel, although the screen could have been bigger. Anyway I contacted the people at 4D Systems and they were kind enough to send me a sample to review, and hack!...

Manage and persist settings with Embedis

For months I’ve been searching for a settings manager for my Arduino and ESP8266 projects. There are basically two issues to take care of: On memory settings or** how do you access to the configuration values** from your code Persistence or how do you store the configuration across reboots For the first issue common solutions in high level languages are key-value solutions in the form of containers or hash arrays....

New firmware for the Slampher

Some weeks ago I received a parcel from Itead. Previously, I had written about the Sonoff and they were kind enough to send me two more of their home automation products for me to review: the S20 Smart Socket I wrote about two weeks ago and the Slampher. The Slampher comes in a simple cardboard box with no documentation at all... just visit their wiki! The Slampher is kind of a Sonoff RF that sits before any light bulb with an E27 screw....

S20 Smart Socket

Since I discovered the Sonoff I’ve been thinking about embedding it inside a switch. I started looking for old power meters, timers,… I had at home but the Sonoff is a bit too long. Why didn’t they design a square board? I event bought a bulky Kemo STG15 case with socket. Next I decided to design my own board. It is meant to be the “official” hardware for the ESPurna project so it’s called ESPurna too....

ITead's Evolution

I was not the first to arrive at the party but since I discovered the ESP8266 I’ve been enjoying it. Then I stumbled upon the Sonoff and dude was I amazed. They are cheap and so very hackable you cannot help buying them, tear them open and customize them. Sure they are not CE or UL compliant, yet. My previous post about adding a custom RF module to a Sonoff HT got some visibility as it was published at hackaday....