Raspberry Pi Pico Intruder Alarm, Arduino and ESP32 Alexa Development Board and more!

<p>Welcome to the Electromaker Show, episode 34! This week saw a Raspberry Pi Pico-based intruder alarm, Arduino and ESP32 Amazon Alexa development board, and more! Check out these top maker, tech, DIY, IoT, embedded, and crowdfunding news stories from the week!</p> <p><iframe src="//www.youtube.com/embed/nnfXrEWpdjA" width="560" height="315" frameborder="0"></iframe></p> <p>We publish a new show every week. <a href= "https://www.youtube.com/channel/UCiMO2NHYWNiVTzyGsPYn4DA?sub_confirmation=1" target="_blank" rel="noopener">Subscribe here</a>! </p> <p><a href="https://youtu.be/nnfXrEWpdjA">Watch the show</a>!</p> <p><a href= "https://www.electromaker.io/blog/article/electromaker-show-episode-34"> Read the article</a>!</p> <p>Don't have time to watch the show? <a href= "https://directory.libsyn.com/shows/view/id/electromaker" target= "_blank" rel="noopener">Listen to the Electromaker show in podcast format</a>!</p> <ul> <li><a href= "https://www.electromaker.io/project/view/diy-34smart34-stray-cats-house" target="_blank" rel="noopener">Stray Cat Shelter uses Arduino to deliver food</a></li> <li><a href= "https://www.electromaker.io/project/view/low-power-iot-intruder-detector-with-rpi4-pico" target="_blank" rel="noopener">Low-power IoT Intruder Detector With Rpi4 + Pico</a></li> <li><a href= "https://hackspace.raspberrypi.org/articles/raspberry-pi-picos-pio-for-mere-mortals-part-3-sound"> Using the Raspberry Pi Pico's PIO to create PWM synthesizers </a></li> <li><a href= "https://www.kickstarter.com/projects/279405789/128-opto-isolated-inputs-plus-rs485-port-for-raspberry-pi?ref=android_project_share" target="_blank" rel="noopener">128 Opto-isolated Input hat for Raspberry Pi</a></li> <li><a href= "https://www.kickstarter.com/projects/wvr/wvr-modern-open-source-embedded-audio?ref=android_project_share" target="_blank" rel="noopener">WVR - Tiny open-source multi-track music player</a></li> <li><a href="https://www.crowdsupply.com/technosens/mdb-js-board" target="_blank" rel="noopener">MDB-JS Board - Control older v