DIY USB Scope

Hmmm looks interesting and at $89 not a bad price. I don't currently own a scope, but this looks like a fun project.
 
I don't know anything about them. I'd like to get one one day, but would like to hear from others that have experience about different ones.
 
Nope :(

....

To expand: You need your scope's bandwidth to be AT MINIMUM 4x the frequency of the signal you want to look at. 1.3 Mhz/4 = 325 Khz max signal frequency. And frankly, 4x isn't REALLY enough - all sorts of odd things can happen and confound your measurements. 10x is the lowest I'd really use, especially with a digital scope. At 10x, that scope can safely measure 130 Khz signals.

So you can look at a few things (audio waveforms, powerline), but any digital logic is probably running at the 1Mhz mark or higher, and you can't see it at all with that scope.

Good luck!
 
To expand: You need your scope's bandwidth to be AT MINIMUM 4x the frequency of the signal you want to look at. 1.3 Mhz/4 = 325 Khz max signal frequency. And frankly, 4x isn't REALLY enough - all sorts of odd things can happen and confound your measurements. 10x is the lowest I'd really use, especially with a digital scope. At 10x, that scope can safely measure 130 Khz signals.

So you can look at a few things (audio waveforms, powerline), but any digital logic is probably running at the 1Mhz mark or higher, and you can't see it at all with that scope.

Good luck!

Thanks for the detailed response! Would the clock speed of the processor(s) on the game affect the speed of the digital logic? I've seen some games up close to the 10Mhz range.
 
Thanks for the detailed response! Would the clock speed of the processor(s) on the game affect the speed of the digital logic? I've seen some games up close to the 10Mhz range.

Unless the CPU clock is derived from a multiple of the clock or is run from a separate clock (very tricky to do) the logic will be running at the same frequency as the clock.

ken
 
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