Bathroom fan controller - the idea

Ok, here a quick and dirty project.

The idea is to build a bathroom fan controller.
One of the bathroom I have has no windows, only a fan to remove the humidity.

I'm tired to have manually to turn it on and off, so time to make this automatic.

Internet Speed Monitor - part 2 - basic SW

 Let see in more details how to put together the basic  internet speed monitor contraption.
This article discuss setting up the Raspberry Pi.

Internet Speed Monitor - part 1 - specifications

Recently my connection with the provider for internet, has some problems.
Running some speed tests from different computers shows really erratic results.

I should have something about 12 Mbit/s downstream and 2 Mbit/s upstream, some tests shows up to 15 Mbit/s-1.5 Mbit/s, others down to 1 Mbit/s-0.25Mbit/s

Not easy to pin point the nature of the problem.

Lights show with Trinket M0

When needed a simple LED show, how to proceed from the idea to building ?

This article is more to discuss strategies and ways to approach a problem rather than describe in detail what is done (also if there is something about that too in it).

Arduino IDE settings for : Trinket M0

The Adafruit Trinket M0 is a small microcontroller from Adafruit, successor of the Adafruit Trinket (3V and 5V) and it can be programmed using Arduino IDE.

Home Automation - fixing Ha-Bridge

Are now years I'm using a program called Ha-Bridge that basically simulate a Philips Hue hub.

The peculiarity of this program is that can be recognized by Alexa and it can control my X10 lights via Heyu. I did set up this system in the 2016, as described in the article of this blog Playing with Alexa and Echo

X10 - AM486 - disable current sensing

At the time of the top usage of X10 there was lot of technical info on the net, today ... not so easy to find them.

I have to modify an old AM486 disabling the current sensing and I didn't find much around, so digging on my old notes here and some searches, I did come up with some info that I hope can be useful to others.

Azure - creating a server-less function in Kotlin

This document describes how to set up a development environment to support the development of a server-less Azure function in Kotlin.

This document DOES NOT describes an application nor it contains specifications about an application.
It only describes the building/preparation/set up of the local development for Azure environment on Linux

Azure - starting dev on Linux

Some notes to start to work with Azure on a Linux system

Repair Roomba 5th gen brush block

UPDATED !

Roomba is a very good brand of home robotics, I own one Roomba 6 and one old Roomba 5th generation (560).

In these years of use of course I had to repair it sometime.
The battery of course usually last about 1 to 2 years, I had a wheel unit broken, had to clean the sensors, a couple of lateral brush motor broken and now, a main brush defective.

Playing with CircuitPython and Enviro+ - Gas sensor

 The feather wing Enviro+ has different sensors in it.
One is the Gas sensor MiCS-6814.
The article covers some information about how to interpret the measurements made with this sensor.

Playing with CircuitPython and Enviro+

 

The main reason to play with Circuit-Python was to use a FeatherWing from Pimoroni called Enviro+ to develop an environmental measure tool.

Raspi calendar - HW-SW

 OK, this is my set up for a calendar display using a Raspberry Pi.

Is quite a while that I wanted to have somewhere a calendar display and was considering different solutions, then one weekend I decided to do something about.

The goal is to have somewhere (kitchen maybe) a monitor showing the Google calendars of the family.
Here some notes.
I'm assuming who is reading this article knows how to set up a Linux system, I'll not describe in details many operations.

CircuitPython and MagTag

MagTag is a new board from Adafruit based on the ESP286 and with an ePaper display, switches and NeoPixel.

Let start to see how to work on this board.