• 16
      Apr - 2019

      Raspberry Pi | 4 min | 567

      #Edge-TPU: Hands-On with Google's Coral USB accelerator - Dockerized

      Raspberry Pi | 4 min | 567


      coral
      coral usb accelerator
      docker
      edge-tpu
      google
      machine learning
      raspberry pi
      teachable machine
      tensorflow lite

      Last week, the Coral team released updates to the Coral platform to "address customer feedback and make it easier to use the products and tool-chain". The Python API has now the ability to run multiple models in parallel, using multiple Edge TPUs.

      Thus, due to the multiple changes, I updated the Docker image lemariva/raspbian-edgetpu which includes the Edge-TPU libraries for Raspberry Pi 3 B+, Jupyter Notebooks and some other interesting libraries (check the Dockerfile).

      edge-tpu-coral-usb-accelerator-dockerized-min.png
      Fig 1: Coral USB Accelerator, Jupyter and some training objects

      The base Docker image remained balenalib/ras...

    • 13
      Apr - 2019

      Raspberry Pi | 4 min | 194

      #Raspberry Pi: Xiaomi Sensors & Home Assistant (Hass.io)

      Raspberry Pi | 4 min | 194


      docker
      embedded
      hass.io
      home assistant
      raspberry pi
      sensors
      xiaomi
      zigbee

      Last week, I published an article about using Xiaomi sensors without a Xiaomi Gateway. The gateway/hub can be replaced with a Raspberry Pi and a USB-ZigBee dongle. You find the instructions here: #ZigBee: Xiaomi Sensors using Raspberry Pi (without Gateway!).

      As you can read in that article, two repositories are available to connect and process the data from the Xiaomi sensors. Additionally, Zigbee2mqtt can be connected to Hass.io. Well, I didn't want to use HassOS (the OS on which hass.io runs), but I wanted to use Hass.io running on Raspbian, otherwise with Home Assistant running as an appli...

    • 06
      Apr - 2019

      Raspberry Pi | 5 min | 7969

      #Zigbee: Xiaomi Sensors using Raspberry Pi (without Gateway!)

      Raspberry Pi | 5 min | 7969


      aqara
      door sensor
      home assistant
      home automation
      mqtt
      pir
      raspberry pi
      xiaomi gateway
      xiaomi sensors
      zigbee

      This tutorial allows you to connect Xiaomi (or Aqara) sensors (e.g. door, pir, temperature, water, switch) to a Raspberry Pi or similar system without using any Xiaomi Gateway.

      This is what I will try to accomplish in this tutorial:

      1. Flash the USB-Zigbee Dongle with the correct FW
      2. Install a broker to connect to the sensors
      3. Configure the sensors using the broker

      Hardware

      Xiaomi sensors use Zigbee for the connection which means we need some extra components to connect to them. This is the list of needed hardware:

      ...
      Wireless Zigbee CC2531 x1
      SmartRF04EB x1
      Debugger Cable x1
    • 26
      Mar - 2019

      Raspberry Pi | 4 min | 1269

      #Edge-TPU: Coral USB Accelerator + rPI + Docker

      Raspberry Pi | 4 min | 1269


      analytics
      coral
      docker
      edge-tpu
      google
      machine learning
      object detection

      In summer 2018, Google announced two Edge TPU devices for machine learning. These are now available under the Coral brand. Two weeks ago, I bought the Coral USB Accelerator. It is a portable USB accessory that brings machine learning inferencing to existing systems and it is compatible with Raspberry Pi and other Linux systems.

      Coral USB Accelerator
      Fig. 1: Coral USB Accelerator, Raspberry Pi Camera and a RasPad

      I wanted to test the performance of the Edge-TPU on my Raspberry Pi3, and as I have every application running on Docker on my Raspberry Pi, I've created a Docker image with everything inside t...

    • 15
      Feb - 2019

      Raspberry Pi | 5 min | 422

      #Raspberry Pi: CUPS Printer Server using Docker

      Raspberry Pi | 5 min | 422


      cup server
      docker
      dockerized
      print server
      printer
      raspberry pi
      tutorial

      A good friend of mine has an old printer and he was always thinking of buying some adapter to make it Wi-Fi compatible. He actually bought one, but it was not compatible! I told him to buy a Raspberry Pi W Zero and build a CUPS Print Server, but he did not have time to do that, so I planned as XMas gift! I hope he is not going to read this before he gets his present. :) - If you received this as a gift, your instructions are here.

      A big challenge was to make it plug & play. I did not want to have his Wi-Fi credentials, and he should not use a terminal over SSH to configure it. I looked for som...

    • 18
      Sep - 2018

      Product Reviews, Raspberry Pi | 4 min | 270

      #Review: RasPad - a tablet for open-source platforms like Raspberry Pi

      Product Reviews, Raspberry Pi | 4 min | 270


      battery
      raspad
      raspberry pi
      table for raspberry pi
      touch screen

      This is my first review on a product that I bought. I hope you enjoy it! Advices and tips are welcome. Please leave me them in the comment section.

      Update: I changed the title of the article from "#Reviews: RasPad - an open source tablet for Raspberry Pi" to "#Reviews: RasPad - a tablet for open-source platforms like Raspberry Pi". The table is a close-source solution for open-source platforms like Raspberry Pi, Beaglebone, etc. (thanks Zykino for your advice!)

      Introduction

      At the beginning of March I supported the Kickstarter campaign called RasPad. I pledged for the Super Early Bird - RasPad...