Author Archives: R-B

ZeroBot: A FPV robot controlled by RPi Zero

Max Kern introduces ZeroBot, a Raspberry Pi Zero W based FPV robot that can be controlled over a WiFi access point (no router is required). With an integrated camera module, it provides you a live video feed with minimal latency. It can be controlled using any computer or smartphone via a web browser. The body parts and the wheels are made with a regular 3D printer.

Some of the key features are:
– Compact CAD design with 3D printed components
– Analog control via a joystick (and multitouch)
– Simple battery solution using only a standard power bank
– Low latency streaming (~0.3s)
– Easy and cheap to build using widely available components

RPi Zero W controlled FPV robot

RPi Zero W controlled FPV robot

For more details, visit Max’s project page on Hackday.io.

Weather forecast cloud

There are already so many weather station projects based on Raspberry Pi. This Instructable describes a weather forecast project based on Raspberry Pi zero with a unique cloud-shaped display that connects to the Yahoo Weather API to retrieve weather info and changes the color of the cloud in accordance with the forecast for the next day. The cloud display uses Neopixels strips for changing colors.

Weather cloud changes color with weather patterns

Weather cloud changes color with weather patterns

 

ESP8266 LightBox lights up in rhythm with your music

David-mccann made a fancy LightBox powered by an ESP8266 module and controlled via a smartphone app. It uses your phone’s or tablet’s built-in microphone to analyze the surrounding music and generates beautiful light patterns matching with the music. All you need to do is to start the app, place the phone near your music system and the LightBox will visualize the sound in real-time. It can also be used a colorful ambient light.

ESP8266 music controlled lightbox

ESP8266 music controlled lightbox

Plug in your LightBox. It should turn blue and you should be able to see a WiFi network called “lightbox” on your phone or tablet. If the box turns red when you first plug it in, you need to reset your ESP8266 module’s EEPROM. Do this by connecting pin 4 of the module to GND for a second. The box should restart and now turn blue.

Connect to the “lightbox” WiFi network with your phone or tablet. Start the LightBox app. The app automatically connects to the LightBox.

In the settings menu, you can configure the LightBox to connect to your own WiFi network instead of creating its own. This way you don’t need to switch to another WiFi network when you want to use your box.

Use the Color Picker to illuminate your room in a color that suits your mood, or use the Audio Analyzer to turn music into beautiful patterns of colors.

Don’t hesitate to ask in the comments section if you have any questions.

Have fun!

ESP8266 volumeter

This ESP8266-based IoT volumeter measures the volume of an open space inside an enclosure using ultrasonic sensors. Three HC-SR04 ultrasonic transceivers are placed orthogonally to measure distances (width, height and lenght) along the three directions to compute the volume. The measurements are sent to the CloudMQTT server and displayed as graph.

ESP8266 smart volumeter

ESP8266 smart volumeter

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