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The Button: Amazon “Dash” type button to communicate to Home Assistant

GitHub: https://github.com/debsahu/TheButton Things we want to achieve: Low on power consumtion: ESP8266 is OFF when the button is not pressed debsahu/ESP_External_Interrupt Portable: Uses 18650 battery, lasts years Talks to Home Assistant: debsahu/HARestAPI

Image recognition using Movidius Neural Compute Stick on a Raspberry Pi Zero W

Let’s build a security camera using Raspberry Pi Zero W and Movidius Neural Compute Stick to recognize a “person” on the video stream PiCamMovidius Set up NCSDK API Install required packages on Pi sudo apt-get install -y libusb-1.0-0-dev libprotobuf-dev libleveldb-dev libsnappy-dev libopencv-dev libhdf5-serial-dev protobuf-compiler libatlas-base-dev git automake byacc lsb-release cmake libgflags-dev libgoogle-glog-dev liblmdb-dev swig3.0 graphviz libxslt-dev libxml2-dev gfortran python3-dev python-pip python3-pip python3-setuptools python3-markdown python3-pillow python3-yaml python3-pygraphviz python3-h5py python3-nose python3-lxml python3-matplotlib python3-numpy python3-protobuf python3-dateutil python3-skimage python3-scipy python3-six python3-networkx python3-tk libboost-python-dev Clone NCSDK cd ~ git clone https://github.com/movidius/ncsdk Compile and install NCSDK’s API framework cd ~/ncsdk/api/src make sudo make install Test installation using sample code from NC App Zoo cd ~ git clone https://github.com/movidius/ncappzoo cd ncappzoo/apps/hello_ncs_py python3 hello_ncs.py Output should look something like this: Hello NCS! Device opened normally. Goodbye NCS! Device closed normally. NCS device working. Install Paho-MQTT Use pip3 to install Paho-MQTT pip3 install paho-mqtt sudo pip3 install paho-mqtt Using these examples Clone this code cd ~ git clone https://github.com/debsahu/PiCamMovidius Native MobileSSD Enter into following directory cd ~/PiCamMovidius/native/picam Edit picam.py with appropiate MQTT server IP, port and topic and run python script python3 picam.py OpenCV 3.2 YoLoV2 Install pre-compiled OpenCV 3.2 Add to apt-source list echo ‘deb [trusted=yes] http://dl.bintray.com/yoursunny/PiZero stretch-backports main’ | sudo tee /etc/apt/sources.list.d/bintray-yoursunny-PiZero.list Update apt sudo apt update Install OpenCV sudo apt install python3-opencv Verify Install python3 -c ‘import cv2; print(cv2.__version__)’ Enable V4L driver sudo modprobe bcm2835-v4l2 Enter into following directory cd ~/PiCamMovidius/ocv3 make Edit picam.py with appropiate MQTT server IP, port and topic and run python script python3 picam.py

MeshyMcLighting: NeoPixels lighting solution using Mesh Network

Idea: Wouldn’t be cool for many McLighting (RGB LED lighting using NeoPixels) to talk to each other and synchronize? Implementation: Here is my naive attempt at this, which requires McLighting to be served as stand-alone web-client. Link: https://github.com/toblum/McLighting/tree/experimental/Arduino/MeshyMcLighting Features Uses painlessMesh to create mesh network and broadcasts state to every node Does not need WiFi connection to internet, standalone mode + mesh Web interface is borrowed from “WS2812FX esp8266” example, completely served on ESP8266 Can do minimal file upload to SPIFFs Completely Async! Uses Task Scheduler, no more tickers No delays in entire code Has RESTful API (same API as McLighting, use set_mode for setting mode, speed, brighness) Async Websockets (ws://HOSTNAME/ws on port 80, same API as McLighting) Async MQTT/Home Assistant Intergration (Only SERVER connects to outside world) Auto Mode (same as McLighting) Button Mode (same as McLighting) Async WiFiManager for SERVER Limitations/TODO For stability, compile both SERVER and CLIENTS on IwIP variant 1.4 Higher Bandwidth (very flaky in IwIP v2) Use Arduino ESP8266 GIT version (Issues with v2.4.1: not memory optimized) WS2812FX has delays meant for ESP32. Track issue here NeoAnimationFX has no delays.

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