Welcome to MadModder!
If you care for a quick wallow in nostalgia:https://archive.org/stream/PracticalWireless1971April#page/n25/mode/2up Dave
Hi, just a quick pic of my test board.it's not too bad, at least the LED works. Roy.
I love wallowing....
Hi Roba simple LED oscilloscope from 20 years agothe 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
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?cheersRoy.
How long does it take for a kit to arrive?Might just buy one for fun... I already have a digital lcd scope......
Rob,I just checked the switch and I get what you say on pin 2, continuity to ground, high resistance on AC or DC.why is there an arrow pointing to pin 4?Roy.
DSO Manual attached for the pros to cast an eye over .Hope that helps ,Rob