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  • Physically Disconnecting the Speaker and Microphone on the Wyzecam V3

    The Wyzecam v3 comes with some great features – namely the $20 price tag and excellent starlight sensor. It also comes with a microphone and speaker – both of which have their downsides. For those that wish to disconnect them (say, for privacy reasons) — and don’t fully trust the software “disable” — one can…

    February 9, 2021
  • Comparison of Wyzev3 Sensor vs RPi IMX327

    One of the best low-light sensors for the raspberry pi is the Sony IMX327 (available here: https://www.inno-maker.com/product/mipi-cam-327/ for around $90). The wyzev3 offers similar starlight performance for $20 – a fraction of the cost. But how do they compare? As can be seen, both images capture all the overall scene well. The white balance of…

    February 7, 2021
  • HA MQTT Auto Discovery

    As described on their official MQTT Auto Discovery page, Home Assistant allows one to create sensors on the fly. This is particularly important if you are, say, trying to add some non-trivial number of devices that speak MQTT. I saw a lot of posts about people struggling to get this working. I too had a…

    January 30, 2021
  • InfluxDB Queries on HomeAssistant Data

    I recently added in influx db + grafana + mariadb to one of my HA instances. I was surprised at how easy it was to get HA happy. Essentially nothing more than running the docker instances for each of these components and adding minimal yaml to HA. When i went to query the data there…

    December 10, 2020
  • Architecture For DIY AI-Driven Home Security

    The raspberry pi’s ecosystem makes it a tempting platform for building computer vision projects such as home security systems. For around $80, one can assemble a pi (with sd card, camera, case, and power) that can capture video and suppress dead scenes using motion detection – typically with motion or MotionEye. This low-effort, low-cost solution…

    November 27, 2020
  • Why a Tesla Model Y Is The Best Car Ever

    Lots of people have opinions. These are mine as to the supremecy of the model y: Purchase experience. In case the entire world has not clearly understood what the past 20 years has increasingly shown: people would rather order online in person. Let that sink in deeply if it causes you pause. Here’s how Tesla…

    September 3, 2020
  • Turning off that Annoying RED LED on the raspberry pi 4

    As mentioned here: https://www.raspberrypi.org/forums/viewtopic.php?t=247054, you can add the following lines to /boot/config.txt to disable this annoying light:

    June 2, 2020
  • Adding in Custom Indices to Elastiflow

    Let’s say you have an elastiflow docker instance set up. This stack pushes all flow info into an index named “elastiflow-<version>-<Year>.<Month>.<Day>”. What if you wanted to use the same ELK stack for both elastiflow AND other stuff? This is possible, of course! Clone the elastiflow git repo Cd into the repo Add a new input…

    May 31, 2020
  • Armchair Deep Learning Enthusiast: Object Detection Tips #1

    Recently I’ve been using the Tensorflow Object Detection API. Much of my approach follows material provided on pyimagesearch.com, this API allows us to perform. Rather than rehash that material, I just wanted to give a few pointers that I found helpful. Don’t limit yourself to the ImageNet Large Scale Visual Recognition (ILSVRC) dataset. This dataset…

    April 20, 2020
  • How I Set Up DLIB

    It is fairly easy to check out and build dlib. Getting it to work in a performance-optimized manner – python bindings included -takes a little more work. Per the dlib github one can build the bindings by simply issuing: First problem I found is that the setup process decided to latch on to an old…

    April 16, 2020
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