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Topic: Cheap scope with LCD (Read 9 times) previous topic - next topic

halley

Quote
The Velleman HPS10 Hand Held Oscilloscope sells for about $109.95 and has a 10MHz sampling rate according for the specs and
2MHz analog bandwidth


Could someone repeat the PCM demo with a Velleman HPS10SE and post that to youtube?  I definitely don't want the Rigol price point, but the cheaper PCB oscope seems a bit slow to refresh with dynamic signals.  Maybe the Velleman is a good middle ground.

halley

In case anyone's got this thread on notify, I put a "first impressions" test of the oscope in another thread at http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1228070870/3#3 - seems okay for seeing individual bits in an i2c conversation.

swbluto

Nice. I've been looking for an appropriate oscilloscope.

I've seen the oscilloscope that relays information from the arduino to the computer which is updated on a Processing graphics window(Pretty nice), but with sample data being 3 bytes and the practical limit of the rs232-usb converter being 167 bytes/s, the practical bandwidth of it is ~56 Hz, which obviously palls in comparison. If one weren't to use the computer's USB connection for relaying data, then the limiting factor would be, at least, the Atmega168's analog-in's sampling rate of ~100ms on average, which limits it to 10 Khz(or around 5kHz in the worst case).

The fact there's something else out there that's cheap and has a bandwidth of 1Mhz is pretty nice to know.

ubuntucat

Any way to connect this scope to a computer?

gnu_linux

Using a serial port I believe, but serial ports are very slow

:)

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