What I did in this project is to use the Arduino Uno board to program the chip, and then I just “transplanted” the chip on the breadboard. It’s now time to test if the hardware part is working. This is the complete schematics of the project: To see if the system is working, connect the green LED in series with a 220 Ohm resistor to the digital pin 13 of the Arduino board, the other side going to the ground. Also, you need to connect the RST pin to the positive power rail using a 10K Ohm resistor. You also have to add the crystal between the X1 and X2 pins, with 22pF capacitors going from each pin to the ground. Also, add the 10uF capacitor between two power rails. You can then take care about the power: connect power lines on each side, connect the negative power rail to the two GND pins of the microcontroller, and the positive power rail to VCC, AVCC, and AREF. This is how it should look like at the end:įirst, put the microcontroller in the center of the breadboard. This project is a bit complex to build, so be sure to follow the instructions. On the software side, you just need the usual Arduino IDE. Note that in this tutorial, we will only cover a tiny part of the possibilities offered by the Arduino platform. This is the list of the components that were used in this article: You will need one 10uF capacitor, two 22pF capacitors, one 10K Ohm resistor, one 220 Ohm resistor, one green LED, and one 16MHz crystal clock.įinally, you will need a breadboard and some jumper wires. You will also need several components around the chip. I used a set of two AA batteries (1.5V each) with a battery holder thus powering the microcontroller with around 3V, which is fine according to the ATmega328 documentation. The best is to power the Arduino directly from the battery, so you don’t have to use any voltage regulators that will suck some power. To power the Arduino, you will need a battery. But for this project I won’t have any external power running on the breadboard so I will just use an Arduino Uno board to program the microcontroller. In a previous project I used a FTDI breakout board to program the Arduino chip directly on the breadboard. Buy your chip with it, it will make your life easier. You will need a chip with the Arduino bootloader. The main piece of this project is of course the microcontroller that will run your Arduino sketches, like the ATMega328. You need several components to build you own Arduino system. And that’s exactly what we will see in this article. The second part is to optimise the software so that the system only consumes power when it is actually doing something. The first thing we need is to build our own Arduino system with just the minimal set of components. Easy, right ? Well, it would work, but your battery would be depleted in a matter of days because some components like voltage regulators are always sucking power. The first idea would be to connect directly an Arduino board like the Arduino Uno R3 to a battery. However, sometimes you want to build systems that are going to be autonomous and powered by a battery.įor example, you want to power a wireless motion detector just by using a set of batteries. Enjoy the article!įor most of the Arduino tutorials you will find on this website, power is usually not an issue as the Arduino is powered by the USB cable coming from the computer. If you found this article after doing a search on Google, welcome! On this website you will find plenty of content around DIY home automation using open-source hardware.
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