Overview The Hacker School space for our batch had two restrooms: one attached to the main work area, and one downstairs. We thought it would nice to know if the bathroom is occupied before taking the time to walk down. Our project makes it possible to check the bathroom status by phone or text message. […]
Voice– and SMS–Enabled Light Sensor Using Raspberry Pi and Twilio Read More »
Typically as a programmer you will work with data on disk, and if you are lucky you will draw pictures on the screen. This is in contrast to physical computing which allows you as a programmer to work with data sensed in from the real world and to control devices that move in the real
Raspberry Pi Sensor and Actuator Control Read More »
Abstract Directly connect a Lego Mindstorms NXT Ultrasonic Sensor to a Raspberry Pi. A TCA9517 I2C bus buffer and an additional GPIO pin for SCL is necessary. A short C++ program to read the measured distance is provided. Introduction Raspberry Pi (Pi), despite some shortcomings, is definitely my favorite SBC. By far the biggest community
How to connect a Lego Mindstorms NXT Ultrasonic Sensor to the Raspberry Pi Read More »
In previous tutorials we’ve outlined temperature sensing, PIR motion controllers and buttons and switches, all of which can plug directly into the Raspberry Pi’s GPIO ports. The HC-SR04 ultrasonic range finder is very simple to use, however the signal it outputs needs to be converted from 5V to 3.3V so as not to damage our
HC-SR04 Ultrasonic Range Sensor on the Raspberry Pi Read More »
IOT or Internet of Things is a hot topic! According to the experts everything will be connected to the internet and all our devices and their data will soon be just an IP address away from us. So where do you start if you want to explore the world of IOT? How about a simple
Build Your First IOT with a Raspberry Pi, DHT11 sensor, and Thingspeak. Read More »
At the end of the project you will have a WWW dashboard that looks similar to this: Multiple Sensors Display a temperature history graph per sensor What you need: Raspberry Pi Model A or B The following parts are available through the PrivateEyePi Store: DS18B20 sensor(s) (TS01), one per temperature reading you want on
Monitor your home temperature using your Raspberry Pi Read More »
This instructable will teach you how to install an Aeroponics system that is controlled by Raspberry Pi. Aeroponics is plant-cultivation technique that has the roots hanging and is suspended in the air. Nutrient solution is sent to them in form of a fine mist. Aeroponics is compatible with any type of planting and can be
Aeroponics with Raspberry Pi and humidity sensor Read More »
Analog Sensors Reading with Raspberry Pi as Interface The Raspberry Pi has no built in analogue inputs which means it is a bit of a pain to use many of the available sensors. We need a A/D interface easy to configure in the RPi and the MCP3008 is the answer. The MCP3008 is a 10bit
Analog Sensors Reading with Raspberry Pi and Zabbix Supervisor Read More »
How it works This sensor has strips of metal plated probes that when in the presence of liquids change the resistance that will activate the internal switch. It can be mounted for example on a skirting board, with the the wireless sensor or Raspberry Pi some height above, via the attached wire. When the
Flood/Water Presence Sensor Read More »
Since my previous post I have added a couple additional temperature sensors to my piHouse project. One is an outdoor temperature sensor that I previously programmed but never installed outside, and the other is a new sensor in my bedroom. This involved some hardware planning and effort installing because I had to run a cable
Adding More Temp Sensor Read More »
