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  • DIY voice assistant part 4: Internet radio and other (bad) jokes

    calendar Jun 16, 2020 · 8 min read · raspberry-pi raspbian  ·
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    In the last part of this series, we enabled the voice assistant to read temperature sensors and checking the weather over the internet. In this article, we will ensure entainment by implementing a DIY internet radio and an API for bad jokes.

    Radio streams under Linux

    A commonly used function of commercial voice …


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  • Cooling your Raspberry Pi - reasonable or a waste?

    calendar May 24, 2020 · 3 min read · raspberry-pi raspbian  ·
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    There are plenty of radiators and fans for the small single-board computer - but how big is the impact of using cooling? Don't get me wrong - having a cooling system is always better than having no cooling at all. But I was curious about the exact difference with the current top model (RPi 4B, 4 GB).

    First of all it is …


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  • DIY voice assistant part 3: Temperature sensors and weather information

    calendar May 19, 2020 · 13 min read · raspberry-pi raspbian  ·
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    In the last part of this series we linked Rhasspy and Node-RED to teach the assistant its first function: reading the current date and time. In this part we will focus on measuring temperature via the internet and DIY temperature guards based on ESP32 and MQTT.

    DIY temperature guard

    Temperature sensors are cheap and …


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  • DIY voice assistant part 2: Linked components and first function

    calendar Apr 29, 2020 · 9 min read · node-red raspberry-pi raspbian rhasspy  ·
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    In the last part of this series we checked-out and installed software for building our own voice assistant without leverage cloud resources. In this article we will focus on linking both Rhasspy and Node-RED. At the end, the assistant will learn it's first function.

    Desired state

    As we already know from the last …


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  • DIY voice assistant part 1: Software options and installation

    calendar Apr 24, 2020 · 8 min read · node-red raspberry-pi raspbian rhasspy  ·
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    Voice assistants are omnipresent gadgets loved by technophile geeks. They support ad-hoc tasks (set tee timer, announce outdoor temperature) and integrate flawlessly into home automation and other third-party systems. Unfortunately, data privacy is often subordinated with these kind of gadgetry. Using various …
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  • Compile Pico TTS on Raspbian

    calendar Mar 31, 2020 · 2 min read · raspberry-pi raspbian  ·
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    To translate text into voice, a TTS software (Text-to-Speech) is required. Under Linux there are basically two free tools: CMU Flite and eSpeak.

    CMU Flite (festival-lite) exists since 2001 and is therefore considered a veteran in speech synthesis under Linux, eSpeak was first released in 2006. From a sound perspective, …


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Christian Stankowic

Virtualization, Linux and IaC
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