In another post, we have showned how to control a gas boiler with an arduino. Today, we will show you how to pilot your electrical heaters via the pilot wire. This technology has been promoted by French heater builders such as Thermor or Atlantic and is described in NF C15-100. Total price : less than $40 […]

DS18B20 from Maxim (formerly Dallas) is a great chip for measuring temperature in your projects. But do you know you can set up the temperature resolution measurement? Yes, the DS18B20 gives you the possibility to choose the resolution of the temperature. Information from DS18B20 datasheet The DS18B20 has an internal register in which the user can […]

In this tutorial, I’ll describe my first steps with SAMD10 xplained. ATSAMD10 xplained ATSamd10 xplained is a development board with a ATSAMD10 microcontroller from ATMEL.   Install ATMEL Studio ATMEL Studio is free and you can download it ATMEL website. Here is a video on how to install it and make it work with ATSAMD10 xplained […]

In this post I will describe how to program on ATTiny with Arduino. In this exemple, I’m going to use a ATTiny 45. Anyway the process is the same for ATTiny 85. Needed Hardware Arduino Uno Price: less than $30 (Amazon)   ATTiny 45 Price: around $2 (Amazon) Load the Arduino ISP program to a […]

Some low cost Arduinos are now packaged with a chinese branded FTDI. This kind of low cost FTDI allows to get Arduino 2560 at really low cost (less than 6$ on Aliexpress). It was the case for one of the Arduino I bougth:   The issue is MacOs does not recognize it by default.  Fortunately,  it’s possible […]

In this post I will explain how you can expend the number of IO of your Arduino via Maxim 1wire DS24O8. The DS2408 is an 8-channel, programmable I/O 1-Wire® chip. PIO outputs are configured as open-drain and provide an on resistance of 100Ω max. A robust PIO channel-access communication protocol ensures that PIO output-setting changes […]

In this blog, I’ve often talked about how to use a atmega in in standalone mode without any Arduino board: with a 16mhz resonator or without any resonator using internal clock In both cases, you need to load the bootloader to the Atmega chip. So I decided to create my own child to bootloader Atmega 328p. So […]

Since a while, I’m trying as I can to reduce the power consumption of my Arduino based system. Remember, I wrote a post about optimizing Arduino consumption few months ago. In this post I will explain how to use the Arduino internal quartz reducing significativelly the power consumption and making system last longer with 2 LR6 […]