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Brighter isn't necessarily always better - be judicious with the placement and use of lights. Pay close attention to the detection zone of your motion sensor light, which is the angle that is covered by the sensor. Likewise, you should also note the security light's range, which is the distance it can detect. The larger the range the more susceptible is the security light to false alarms. For best effectiveness, install your motion detector sensors to cover the walks over your front and back doors as well as your driveway. Mount the motion detector lights 2 to 3 meters (6 to 10 ft) above the ground. Be very wary of your neighbours - security lights can be very sensitive, and you don't want to trigger a light every time your neighbour opens their door or walks down their path. So be careful where you point it. an open, intelligent network of public resources Looking for bulbs and fixtures for your home? Visit our consumer lighting pages. Expand your lighting knowledge.

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Handouts and information ready for you to share with your community Learn more about how to protect your family and your home from fire, flood or break-in Protect your investment from the same dangers you could encounter at homeRiding in Adelaide especially during night can be a hazardous activity. You have to share the road with cars and pedestrians, staying safe from the former and keeping the latter safe. Avoiding pedestrians requires vigilance from the cyclists, but the attention of cars has to be drawn with bright lights. Often due to circumstances you might need to ride in the middle of the lane or cut across lanes to make a turn. During the day these activities are indicated with a hand signal, I made this project to translate those to bright lights controlled by your motion and muscle activity to obvious signals during the night.Various light options tested with data from serial portThe controller used in this project is Myo Armband - it contains a 6 DoF IMU and 8 EMG sensors for muscle activity.

The controller communicates to the BeagleBone via a BlueGiga BLE dongle, this appears as /dev/ttyACM0 on debian based images. The raw data from the sensors is processed using Scikits Learn and an NN-classifier to interpret the rider motions. The turn and stop activity is then passed over to a realtime controller (either the BeagleBone's native PRU or an external microcontroller like the Teensy) to drive a WS2812B LED matrix.Data stream from Myo controlling LED MatrixThe BeagleBone Green is modified to add a JST connector to activate the on-board battery charge management system to use a Lipo for poweing the bike lights according to this how-to. See the images below for details of this modification.Resistors below BeagleBone GreenJST connector and battery above BeagleBone Green - also note the BLE DongleThe whole system is wearable and battery powered. The LED matrix is stiched onto a high-vis jacket, a must for any night time riding and the Myo is placed around the fore-arm before starting the ride.

Here is a video of the lights in action linked to gestures.Testing gestures and linked lightsInstall git on BeagleBone Green and sync the date using ntpdate. Then checkout my repository.Plug the Myo Blue Giga receiver in and check that it is recognisedThere should be 3 usb devices. The BeagleBone Green may need to be powered over USB instead of battery for the USB hub to power up and recognise the module.Install the dependencies for myo-raw.sudo pip install -r requirments.txtThe myo-raw can also be installed under Windows  or any other desktop environment to stream the data from the BBG and display it remotely.Run myo_raw_osc with the following command to stream data to remote server, print locally and send results from EMG sensor to external LED panel controller (in my case the Teensy, however I am also experimenting with the PRU's)screen -dmS myo python myo_raw_osc.py -v 1 -s 1 -d [x.x.x.x,7110] -c 2This will output controller codes to the Grove UART port /dev/ttyO2 to the display driver in sync with arm motion.

A bit of looking at the experimental data and tweaking of the classifier may be needed to get it set to you movement patterns.That's it for the setup on the BeagleBone Green in the non-PRU mode. For the Teensy, clone the git repository as below.Install the Teensy add-on for the Arduino IDE as described here and upload the code to the controller. The LED matrix data pin is connected to pin 2 of the Teensy and the BeagleBone UART is connected to Hardware UART1. I power the LED matrix from the 3.3V output of the Teensy rated at 100mA, this allows safely connecting the 3.3 output signal to this particular matrix. Larger matrices may require buffer IC's and separate power supply. The BBG 5V system pin is connected to the VIN pin of the Teensy for power supply off the battery/USB OTB connected to the BBG.Having a second microcontroller (the Teensy) while 2 PRU's on the BeagleBone are unused is a bit of a waste. So I deployed a custom cape typically used for building Christmas lights. The cape kit was purchased in South Australia from a local designer.