LoRa and LCD displays

 #368 How to build performing antennas for LoRa, WiFi, 433MHz, Airplanes etc.(NanoVNA, MMANA-GAL) - Andreas S.

https://www.youtube.com/watch?v=6cVYsHCLKq8


How to build a homemade mini-PLC using simplified prototype process step by step

https://www.youtube.com/watch?v=6-9G1r2rqhg

Using LCD Displays with Arduino
https://www.youtube.com/watch?v=wEbGhYjn4QI

Crystal Oscillator Explained

https://www.youtube.com/watch?v=YzcKQWwkzWs

I found a review for the DS0138 on the EEVBlog mailing list

 Here is the link:
https://www.eevblog.com/forum/testgear/jye-tech-dso-138-review-and-performance-testing/


I have the DSO138 Mini


However, it appears for be bad for square waves. Perhaps I should use a logic analyzer instead??

https://articles.saleae.com/logic-analyzers/logic-analyzer-vs.-oscilloscope
https://www.sparkfun.com/products/15033
https://sigrok.org/

https://www.youtube.com/watch?v=KiDDL5xtnG0 [Cheap logic analyzer + Sigrok pulseview = timesaver (LHT00SU1)]

I was looking for logic analyzers viewing the output of a 55 timer. This is not it, but it seems interesting: http://exploringbeaglebone.com/chapter4/

Logic analyzers will sample a sine wave to get a square wave output:
https://articles.saleae.com/logic-analyzers/how-to-use-a-logic-analyzer

This may mean that I can get at least a qualitative representation of a high frequency sine wave.