IoT Experiments

Tardis

Audio player [2]: Tardis tissue box cover

It's time to build the connected Tardis! Sound, lights, and tissue box in one beautiful (?) object!

ESP8266

Audio player [1]: Concept and first circuit

A real IoT device, WiFi enabled, connected to a MQTT server which can play sound on demand!

module

JDY-08 : bluetooth 4.0 module

The JDY-08 BLE module is cheap and not very well documented. It's mandatory to update it before unleashing it's power!

Arduino

Day counter on LCD display

Using an ATtiny and modifying an LCD module gave me the ability to build a low power display working more than a year with two AA batteries.

Water-Tank project

Water tank monitor [5]: Power consumption

After building the circuits and programming them, I have to check the power consumption of the sensors before installing them.

WTV020M01

WTV020M01 : MP3 to compatible WAV

The WTV020M01 module can play audio files and be controlled by an Arduino. Sadly, it's quite difficult to convert the audio files in a compatible format.

DSO 138

DSO138 [3]: Acrylic case

Last step in the oscilloscope build: the acrylic case!

DSO 138

DSO138 [2]: Calibration

Before using the oscilloscope, it has to be calibrated. I had some issues and I hope that this sum-up will help you.

Project

Arduino Pro Mini: Power consumption

Building a low power consumption project is not easy for a hobbyist. The Arduino Pro Mini is a good option but requires some tweaking!

Arduino

Arduino pro mini @ 1MHz in Arduino IDE

After building a bootloader for Arduino Pro Mini working at 1Mhz, I found a way to easily use it in the Arduino IDE.

DSO 138

DSO138 [1]: Assembly

I acquired a cheap oscilloscope, the DSO138, in kit. The first step is to assemble the pieces!

Arduino

Compile Optiboot for Arduino Pro Mini (1Mhz / 1.8V)

Using the Arduino pro mini at 1MHz is great, but requires an ISP programmer. I built a bootloader working at this frequency to simplify developments.

Arduino

Arduino pro mini @ 1MHz - 1.8V

I'm always trying to find the best option for low power consumption projects. Using the Arduino pro mini at 1MHz and 1.8V gives new perspectives!

Water-Tank project

Water tank monitor [4]: Source code

After building the circuits of the sensors and the base station, it's now time to program them with the Arduino core.

Water-Tank project

Water tank monitor [3]: Circuits

Time to build my first water taken sensor and the base station! I will use perfboards and plastic boxes for this first iteration.

Water-Tank project

Water tank monitor [2]: Components

After reviewing the main parts for my sensors, it's time to decide which electronic components I will use.

Water-Tank project

Water tank monitor [1]: Concept

I want to create two sensors to decide which water tank should supply the chalet. Let's discuss sensors, communication, power supply and display.

ESP8266

Fashing the ESP12E with the breadboard adapter

The ESP8266 is a great way to build connected projects. I love using the barebone chip with the breadboard adapter. Let's see how we can flash it!

ESP8266

ESP8266 Knowledge base

This page is a reminder of all the links I use / need for the ESP8266.

ESP8266

Flashing ESP8266 ESP-01

Flashing the ESP8266 in the ESP-01 form is not easy. I built a little circuit to simplify the task.

ESP8266

Freezer Door [1]: Concept and first try

My first project will be a simple one: a door (open / close) detector. Although this project is very simple, I want to go the far as possible and not do only a dirty try. I will use this project to know when my freezer door stays open to much, in

ESP8266

Flashing ESP8266 NodeMCU Devkit with NodeMCU

The NodeMCU board is the way to go to begin WiFi projets. Flashing it witht the NodeMCU core open a new world of possibilities!

IoT @ home : Big Picture

Updated the 2016/02/06 With my projects, I want to build a complete IoT chain. I don't picture IoT with the common smartphone/bluetooth pattern, but more like a network of objects, connected to an entity which interpret values and gives the appropriate orders if necessary. Today,

ESP8266

ESP8266 presentation

The ESP8266 is THE WiFi module for hobbyists, which exists in a lot of variations. It's time to discover them.

Basics

Pull-up / Pull-down resistor

Understanding why and how use pull-up and pull-down resistors was mandatory to build my first Arduino based circuit.