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* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)
 
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)
 
* [http://www.dos4ever.com/uscope/uscope_e.html "The µSCOPE: A poorman's oscilloscope"] by Ronald Dekker. An extremely small and low-cost circuit based on the 8 pin Microchip PIC12f675; displays "signals up to a few kHz" on a PAL TV screen. "isochronous code".
 
* [http://www.dos4ever.com/uscope/uscope_e.html "The µSCOPE: A poorman's oscilloscope"] by Ronald Dekker. An extremely small and low-cost circuit based on the 8 pin Microchip PIC12f675; displays "signals up to a few kHz" on a PAL TV screen. "isochronous code".
* [https://hackaday.io/project/6511-cell-phone-oscilloscope "Cell Phone Oscilloscope"] by Jonathan Whitaker. "A preamp to use a cellphone mic input as a basic oscilloscope. Protects the phone from nasty voltages." Like most sound card o'scopes, limited to audio frequencies 20 Hz (?) to 21 kHz (see [http://electronics.stackexchange.com/questions/59157/over-what-frequency-range-can-the-microphone-of-smartphone-receive-the-sound "Over what frequency range can the microphone of smartphone receive the sound?"])
 
* [http://www.instructables.com/id/A-Preamplifier-for-Smartphone-Oscilloscopes/ "A Preamplifier for Smartphone Oscilloscopes"] by chipstein.
 
  
 
Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].
 
Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

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