I recently brought a couple of smart bulbs, which can ben controlled with your smartphone using a specific app. The bulbs are RGBW, i.e. they have the ability to emit different colors (RGB) in addition to the cold white color (W) and are branded Fcmila: I wasn’t able to find the official website of the manufacturer,…
Irrighino has been one of my most appreciated projects: it’s a automatic irrigation system – based on Arduino Yun – with a web-based interface, optimized for smartphones. After having published the project on this blog, it was reviewed by Open Electronics and a dedicated shield was also produced. The shield is still sold on Futurashop: When it was launched the…
In the previous two posts of this tutorial, I explained how to perform an over-the-air update of the firmware running on the esp32 chip. Sometimes you may need to revert to the factory firmware, that is the firmware stored in the flash memory when the chip was programmed. Many consumer devices have a button or…
This year in March, Massimo Banzi announced on the Arduino blog the production of a new revision (Rev.2) of the Arduino Yun board. In addition to some improvements on the hardware design, the new revision offers a complete update of the software side of the Yun, that is the Linux distribution (OpenWrt) running on the board. The original Yun was…
In the previous post of this tutorial, I explained how it is possible to update your board Over-The-Air thanks to a feature of the Freshen IoT dashboard. Today I’ll show you how to update the firmware running on an esp32 chip using only components included in the esp-idf framework, without the need of any external tools…
In one of the first posts of this tutorial, I wrote about the bootloader and about how the flash memory is organized. That article says: This allows to implement an over-the-air (OTA) application update process: you send the new version of your application to the esp32 chip; the version is stored in a new app partition There are different…
Here’s a new promo for the Fusion PCB service by SeeedStudio: from today untill September 21st, you can order 3 PCBs for 1$ (excluding shipping costs) To take advantage of the offer, simply enter the order from the dedicated page of their website. The offer includes PCBs with the following characteristics: [checklist] 1/2 layers max size of 10x10cm…
Some months ago, Espressif announced the production of a new chip, named ESP32-PICO-D4. It’s a complete SiP (System in Package), that is a chip which integrates the esp32 microcontroller, a 4Mbit flash memory, a crystal oscillator, filter capacitors and RF matching links. The chip datasheet is available on the official website. Using this chip, it’s possible to create very small modules. I…
PlatformIO is an opensource ecosystem (as it’s defined in the homepage of the project) to develop IoT projects. The heart of the platform is a software component named PlatformIO Core. This component includes: [checklist] a cross-platform compiler a libraries and dependences manager a serial monitor [/checklist] PlatformIO Core is developed in Python and therefore it can run on…
I recently brought from Banggood a support for having a third hand during soldering operations… the support is made by an aluminum base and three arms which end with a crocodile clamp with insulating sheath: The assembly is very simple, the arms must be screwed on the base: In general this support is very useful; the arms are very well…