IoT Experiments

LCD

Flash a VS-TY2662-V1 LCD controller

How to flash a VS-TY2662-V1 controller to use a salvaged LCD screen.

esp32

ESP32 Warning light

An old school warning light connected to an MQTT server thanks to an ESP32.

Windows

Unable to install HAXM on Windows 10

I had some difficulties to install HAXM (which requires VT-X) on Windows 10 Enterprise to develop an Android app. I will tell you this secret...

BLE

BLE sensor with the nRF51822 chip

The journey of building a BLE sensor prototype, with a custom firmware based on the Nordic nRF51822 chip and the Ardunio framework.

ESP8266 Featured

WiFi Gateway

I quickly built a simple WiFi gateway around a bare-bone ESP8266 to be able to test a sensor module.

RC Featured

Airboat controlled with Bluetooth

This airboat is based on an Arduino pro mini, a JDY-08 module for the communication and controlled with an Android mobile app.

RC Featured

I build myself a Dead Simple Wing 24"

Building this RC Wing made me do some research to understand how RC models work.

Arduino

WebUSB on the Pro Micro (ATmega32u4)

An example of data exchange between your microcontroller and you web browser with WebUSB.

GSM

Ai-Thinker A9 module with custom firmware

Let's discover the A9 GSM module and the possibility to flash it with a custom firmware!

GSM

AI-Thinker A6 module: firmware update

The A6 module can easily be used to add GSM communication to your project as long as you update it.

Google Assistant

Build Actions for the Google Assistant

I built some Google Assistant Actions to related to the content of mobile app.

Alexa

Create an Alexa Skill

Personal assistants are the new trend. I though it was time to build something for Alexa.

Arduino Featured

Cat Water Spray

How to avoid being woken up by my cats? Spray some water on them if they insist!

ATtiny

MicroNucleus bootloader upgrade

The ATtiny85 MicroNucleus boards are often delivered with some old bootloader. Let's try to upgrade them!

3D printing Featured

Orange Pi Zero and webcam for Octoprint

Octoprint is the way to go to easily manage and monitor your 3D printer from your PC!

ATtiny

Blinking wearable

This project was the opportunity to order some PCB and discover some new components as hall sensors.

sigfox

Sigfox sensor node

Even if Sigfox is only available in few countries, it is interesting to build a sensor node with low power requirements.

ATtiny

Unbrick an ATtiny13a at 128khz

So easy to flash and brick an ATtiny13A. Let's see how to recover it as easily!

PWM

LED brightness with PWM and MOSFET

A simple example using a MOSFET to change the intensity of some LEDs.

ATtiny Featured

Sleep device

This little device is a low-cost homemade option which will help you to sleep like a baby!

PIR

PIR sensors: HC-SR501

Some specifications and tests around the most popular PIR sensor on AliExpress (with low power consumption in mind).

Arduino

Pulse LED with ATtiny

The ATtiny opens new low costs project possibilities. Pulsing a LED for few seconds is an easy example.

ATtiny

ATtiny85 development boards

There is a lot of ATtiny dev boards out there. Let's compare them quickly.

Tardis

Power on a circuit when the lights are on

Power off a circuit when the lights are off can be a good way to decrease power consumption.

Tardis

LED pulse with NE555

The NE555 timer is quite cheap and using it is quite different than the usual micro-controllers. Pulsing a LED is a good way to begin with.