Category Archives: Customer Projects

Audio HAT for the Raspberry Pi Zero

The Raspberry Pi Zero (RBPiZ) and its successor, the Raspberry Pi Zero Wireless (RBPiZW) are very small single board computers. The Pi Foundation wanted to keep their cost and size to the low side, so they did not include either a 3.5 mm audio jack or any other audio port. Although this may seem like a setback for many users, some of them were went ahead and figured out how to get audio out of the board with a little hacking. Another reason for not including an audio port is the Broadcom chipset Read more [...]

VNC: Controlling a Raspberry Pi from Anywhere

Sometime you wish you could remotely control your Single Board Computer (SBC), the Raspberry Pi (RBPi). This could be because you have set up your RBPi as a home security system with a camera that you want to monitor remotely, or the RBPi is in control of some appliance that you would like to switch on/off from a remote location. Ordinarily, to access an RBPi from outside your home network, you would need to give it an IP address, and set up your home router accordingly. However, there is another Read more [...]

RS485 & Raspberry Pi: Monitoring Power

Commercial data centers, lighting controls, utility rooms for buildings, and others need to keep a tab on their power consumption. The normal way to do this is by using electronic voltage meters and multi-branch current monitoring circuits. Vytas Sinkevicius wants to monitor power consumption using the ubiquitous single board computer, the Raspberry Pi (RBPi) as the main controller and the RS485 interface in a Branch Current Monitor (BCM) system. The heart of the power monitoring system is an Read more [...]

Monitor Appliances with Raspberry Pi

We use many appliances to help us around the house and office. However, most of them are not smart enough to inform us when they have finished the chore allotted to them. That means we have to leave whatever we are doing at intervals to check and monitor the state of the appliances. This reduces our efficiency for doing important work requiring long stretches of concentration. All this can be set right if you have the single board computer, the Raspberry Pi (RBPi) readily available. You can program Read more [...]

How to Host XBee Sensors with the Raspberry Pi

Hosting sensors on the Raspberry Pi (RBPi) is so simple because the GPIO pins are all available. As most sensors need very little supporting components, hosting multiple sensors on your RBPi is possible. For instance, RBPi can simultaneously host multiple sensors for temperature, pressure, humidity, and other parameters for sampling atmospheric conditions from a weather station. However, the RBPi does not support digitals signals on its GPIO pins. This is one reason the RBPi is so inexpensive. Read more [...]

Name Badge with the Raspberry Pi

For people who interact a lot with others, it helps to build relationships if there is a small gizmo available as a handout. Apart from being a conversation starter, this could also be an advertiser for that upcoming project or story. Most people relish being handed a freebie, and a programmable one-off gadget is one of the best. These were the exact thoughts running through Rob Reilly’s mind when he got a tiny color LCD for Christmas. He conceived the idea of a programmable name badge, as that Read more [...]

A Raspberry Pi Computer in an Altoids Tin

Although Altoids, a brand of breath mints, has its origin in the UK, it is less widely available there than it is in the US. The mints come packaged within a distinctive tin case, which people commonly reuse for different purposes, mainly as a container for small household items such as sewing materials, coins, paper clips, among many other items. DIY enthusiasts often find the tins eminently suitable to contain electronic projects. For instance, Texas Instruments makes the BeagleBones, a single Read more [...]

A Drone-Disabler with the Raspberry Pi

Drones or quad-copters are now affordable, and it is possible to record unique perspectives using their high quality video transmissions. The FAA calls them the unmanned aircraft systems, and these have started posing new challenges to security, safety, and privacy. Experts have started cautioning pilots to consider the implications of the increase in drone usage. Apart from constant surveillance concerns, it is possible for hackers using roving drones to collect location information from mobile Read more [...]

Raspberry Pi Goes Binocular

This project uses the popular single board computer, the Raspberry Pi (RBPi) and a spare pair of binoculars to view and take pictures. The LCD on the RBPi is touch enabled to make it easy to capture the images. To start with, you will need the appropriate Operating System for the RBPi. Download the Wheezy Raspbian OS from the Adafruit site, which will make it easy to interface the 2.8” TFT LCD with a capacitive touchscreen from Adafruit. Once download is complete, unzip the image and install Read more [...]

Annoy-Pi: Using the Raspberry PI to Annoy Others

Most of us, as children, have made several attempts at annoying our neighbors. The electronically inclined have attempted circuits producing random chirps, which when hidden in cupboards, produced the most annoying effects. Another was a tiny coin-cell battery operated beeper that produced a beep every minute or so, designed to make people go crazy. Now, you can use the Raspberry Pi (RBPi), the popular single board computer, and try different programs to see which of them can produce the most annoying Read more [...]