Tag Archives: Arduino

Arduino weather station with RF433 MHz modules


by eliesalame @ instructables.com:

In this project I will show you how make two Arduinos talk to each other using RF frequency (wireless).

Now I will use the knowledge in all these project and improve on them by making one Arduino send data to another Arduino wirelessly using an RF433 module and displaying it on I2C serial LCD.

Arduino weather station with RF433 MHz modules – [Link]

Arduino based MPPT solar charge controller

20150805_151734 copy

by Abid Jamal @ electronicslovers.com:

what is Mppt( Maximum power point tracking) ?
“we use MPPT algorithm to get the maximum available power from the Photovoltaic module under certain conditions”

How MPPT works ? Why 150W solar panel does not equal to 150 w?
For example you bought a new solar panel from the market which puts out 7 amps. under charge the setting of a battery is configured to 12 volts : 7 amps times 12 volts = 84w (P=V*I) You lost over 66 watts – but you paid for 150 watts. That 66 watts is not going anywhere, but it,s due to the poor match of the solar output current and battery voltage .

Arduino based MPPT solar charge controller – [Link]

How to Set Up the DHT11 Humidity Sensor on an Arduino


by circuitbasics.com:

Because of their low cost and small size, DHT11 humidity and temperature sensors are perfect for lots of different DIY electronics projects. Some projects where the DHT11 would be useful include remote weather stations, home environment control systems, and agricultural/garden monitoring systems. The DHT11 is a digital sensor that lets you easily get relative humidity and temperature readings in your projects. In this post, I’ll first go into a little background on what humidity is, then I’ll explain how the DHT11 measures humidity. After that, I’ll show you how to connect the DHT11 to the Arduino and give you some example code so you can use the DHT11 in your own projects.

How to Set Up the DHT11 Humidity Sensor on an Arduino – [Link]

Arduino WiFi Shield 101 is on sale


by Zoe Romano @ blog.arduino.cc:

We are excited to announce that Arduino Wifi Shield 101 developed with Atmel is now available for purchase on the Arduino Store US (49.90$).

Arduino WiFi Shield 101 is a powerful IoT shield with crypto-authentication that connects your Arduino or Genuino board to the internet wirelessly. Connecting it to a WiFi network is simple, no further configuration in addition to the SSID and the password are required. The WiFI library allows you to write sketches which connect to the internet using the shield.

Arduino WiFi Shield 101 is on sale – [Link]

DIY Motorized Combo Lock Cracking Device

Combo Breaker is a motorized, battery powered, 3D printed, Arduino-based combination lock cracking device. It is portable, open source, 3D models provided, and exploits a new technique I’ve discovered for cracking combination locks in 8 attempts or less, but in an even more exciting, automated fashion.

DIY Motorized Combo Lock Cracking Device – [Link]

nodeLHC – ESP8266 development board


Pedro Minatel shared us his ESP8266 development board project – nodeLHC:

This board was developed at the Campinas Hacker Lab in Brazil during our weekly IoT meetings. This layout and schematic was developed by Leandro Pereira.
The idea was to develop a easy to use board and to learn how to use this magnificent WiFi module.
We are not selling it but you can build your own board if you want!!!
This board is full compatible with nodeMCU, Arduino IDE, native development and any other firmware avaliable.

nodeLHC – ESP8266 development board – [Link]

Temperature controlled coolbox


by nusnel @ instructables.com:

For my monthly maker column in Dutch newspaper “De Volkskrant”, I made a coolbox in which you can control the temperature in three separate compartments to keep craft beer at just the right temperature.

The contraption I build uses three Peltier-elements to cool, an old desktop computers power source, an LCD to show both the measured and the set temperature and finally an Arduino to tie it all together.

Temperature controlled coolbox – [Link]

Arduino Time-Lapse Panorama Controller


by oliverb @ instructables.com:

The Arduino controls a Geared Stepper Motor 28BYJ-48 via a ULN2003 Stepper Motor Driver Board. The 4×20 I2C LCD display and 5 micro switches form the interface to the Arduino. The controller has a Manfrotto 200PL-14 quick release tripod mount for attachment to my tripod and other mounting hardware fitted with a Manfrotto 323 Quick Release Clamp Adapter. Power is provided by a 50000mah USB Power Bank Battery Pack.

Arduino Time-Lapse Panorama Controller – [Link]