| The Shop > Electronics & IC Programing |
| Digital oscilloscope project/kit |
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| RobWilson:
--- Quote from: John Swift on January 05, 2016, 03:36:49 PM ---Hi Rob a simple LED oscilloscope from 20 years ago the circuit shows the principle the 'scope in the photo has an adjustable sync , time base and attenuator as expected in a usable tool the oscilloscope is usable up to 30 KHz John --- End quote --- Hi John , Did you build one ? Looks a fun project , I may have a bash at making one myself :zap: Its good to see this old time technologie , all way way before my time :lol: :lol: cheers for sharing lads :thumbup: Rob |
| wheeltapper:
Hi Rob. I've just finished building the scope kit and it all seems to work OK apart from one thing, the top l/h switch for AC, DC and ground, I can only get the display to indicate DC or ground. have you any ideas what to look for? cheers Roy. |
| kayzed1:
My kit arrived today, will take a look at it in the morning and report back. Lyn. |
| John Rudd:
How long does it take for a kit to arrive? Might just buy one for fun... :coffee: I already have a digital lcd scope...... :scratch: |
| RobWilson:
--- Quote from: wheeltapper on January 06, 2016, 03:27:03 PM ---Hi Rob. I've just finished building the scope kit and it all seems to work OK apart from one thing, the top l/h switch for AC, DC and ground, I can only get the display to indicate DC or ground. have you any ideas what to look for? cheers Roy. --- End quote --- Hi Roy All I can think of is you may have a faulty switch , From pin 2 on the back of the board to the outer of the BNC plug , With the switch in the Ground position you should have continuity . In AC or DC there will be a high resistance , if you still have continuity in these positions the switch is bust. DSO Manual attached for the pros to cast an eye over . Hope that helps ,Rob |
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