Monday, December 15, 2025

LilyGo vs CYD Cheap Yellow Display for Hacking

Back in 2020 someone told me the covid19 tests were radioactive.  I pulled out my Geiger counter and proved that was not true.  Now I am hearing the Covid19 vax gives people a Bluetooth/RFID/MAC address.  So I decided to venture into hacking to find out if that is true.

Right away I had a second use for these devices.  I am setting up a Raspberry Pi RaspAP filtered router.  I need to compare signal strength between the RaspAP and  Netgear router.  The objective is to add an antenna to the RaspAP and see how the two compare in signal strength.

I bought a LilyGo and a CYD to compare the two.  The CYD lacks many sensors and the LilyGo has a screen so small that you need a magnifying glass to read it.


So I decided to buy and add the additional sensors to the CYD device. Now there is a guy who has added several modules to a CYD using around 12 switches to select between the modules. I am hoping to simplify the design with less modules, three position switches, and 3D print a case for it.



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