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Hello, again.&nbsp;This is Trey.&nbsp;&nbsp;</span>
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&nbsp;</span>
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Several months ago, I heard Paul Asadoorian mention the Cheap Yellow Display on his podcast, </span>
<a href="https://www.scworld.com/podcast-show/pauls-security-weekly" rel="noopener noreferrer" target="_blank">
Paul's Security Weekly</a>
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(</span>
<a href="https://www.scworld.com/podcast-show/pauls-security-weekly" rel="noopener noreferrer" target="_blank">
https://www.scworld.com/podcast-show/pauls-security-weekly</a>
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).&nbsp;I didn't think much of it at the time, but then I heard it referenced again, and again.&nbsp;Then, finally, it was described, and I became interested.&nbsp;</span>
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&nbsp;</span>
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"Cheap Yellow Display" is the term used for the ESP32-2432S028R. Since this is somewhat challenging to say, and to remember, and since the board is yellow, and it can be obtained for as little as $12 USD, it has been given the nickname "Cheap Yellow Display".&nbsp;I will abbreviate this as CYD for the remainder of this episode.&nbsp;It is an </span>
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ESP32 (with built in WiFi &amp; Bluetooth) on a development board with one or more USB connectors, a MicroSD slot, a limited selection of GPIO pins, an RGB LED, a speaker, a light sensor, and best of all, a </span>
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2.8-inch (71mm) TFT touchscreen LCD display.&nbsp;</span>
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&nbsp;</span>
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The CYD runs on 5 volts DC.&nbsp;I am including some photographs of the CYD in the show notes.&nbsp;</span>
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&nbsp;</span>
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<a href="hpr4472_image_1.jpeg">
<img src="hpr4472_image_1_tn.jpeg">
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<img src="hpr4472_image_2_tn.jpeg">
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&nbsp;</span>
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&nbsp;</span>
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&nbsp;</span>
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<a href="https://randomnerdtutorials.com/cheap-yellow-display-esp32-2432s028r/" rel="noopener noreferrer" target="_blank">
RandomNerdTutorials</a>
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has produced a very good writeup about this board on their&nbsp;website (</span>
<a href="https://randomnerdtutorials.com/cheap-yellow-display-esp32-2432s028r/" rel="noopener noreferrer" target="_blank">
https://randomnerdtutorials.com/cheap-yellow-display-esp32-2432s028r/</a>
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).&nbsp;</span>
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&nbsp;</span>
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Brian Lough (AKA </span>
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WitnessMeNow) has been building a community for the CYD on his GitHub site (</span>
<a href="https://github.com/witnessmenow/ESP32-Cheap-Yellow-Display" rel="noopener noreferrer" target="_blank">
https://github.com/witnessmenow/ESP32-Cheap-Yellow-Display</a>
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) where he has instructions, examples, tutorials, downloadable tools, and much more.&nbsp;</span>
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&nbsp;</span>
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&nbsp;Beginning back in the 1970s, my father and I built electronics projects together. And I have had a love for doing so ever since.&nbsp;Over the last few years, I have built several Arduino based gadgets on different platforms, including a couple which run on breadboards sitting beside me on my desk (I will share more about one of those later).&nbsp;&nbsp;&nbsp;</span>
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A common use for the CYD among hackers is to leverage the built in WiFi &amp; Bluetooth radios to compromise wireless networks or devices.&nbsp;The Marauder project is a prebuilt image which can be loaded directly to the CYD to use it as a wireless hacking tool. </span>
<a href="https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display" rel="noopener noreferrer" target="_blank">
Fr4nkFletcher's Github repository</a>
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(</span>
<a href="https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display" rel="noopener noreferrer" target="_blank">
https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display</a>
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) is one place where you can download the Marauder tool.&nbsp;There are also video games, clocks, photo slideshows, and more, which have already been coded for you, and are available on the internet for download.&nbsp;</span>
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&nbsp;</span>
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What would you do with a CYD?&nbsp;What could you build?&nbsp;What problem might you solve?&nbsp;What fun project might you come up with?&nbsp;</span>
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&nbsp;</span>
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For myself, the CYD intrigued me, but it did not yet jump out at me as something I had a need for.&nbsp;Yet.&nbsp;</span>
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&nbsp;</span>
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What would change my mind?&nbsp;What would set me on a quest to obtain some of these devices and learn to develop code for them?&nbsp;What problem did I wish to solve?&nbsp;</span>
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&nbsp;</span>
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Tune in again, in a couple weeks, to learn the answers some of these questions and more in my next episode in this HPR series.&nbsp;</span>
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