Andrew Hetherington asked 8 years ago
I’m confused with the schematics for this project.
The 10k LED resistor is not connected to anything nor is 4.7k resistor. I’m assuming that the 2 red wires in the top right should be moved 1 column to the left to connect to these resistors. At the moment they are not connected to anything.
A circuit diagram would be helpful here, not only to debug Fritzing errors but to help us newbies see how a circuit translates into real life.
A description of what actually goes on would be invaluable. Even If I get the project working I will still have no idea what the Trigger, Discharge, Threshold etc do.
Thanks,
Andrew
Rui Santos Staff answered 8 years ago
Hi Andrew,
Thank you for bringing that up. That is definitely something that I’ve tried to improve over the years and I agree that those schematics are hard to follow, but that was one of my first projects that I’ve ever shared online back in 2013.
In the oscilloscope project, I use a 555 timer flasher circuit. Here’s a similar circuit diagram that will also work:
The circuit diagram above was taken from this Unit of the Electronics for Beginners course: https://rntlab.com/flashing-an-led-with-the-555-timer
I hope this helps and please let me know if the Electronics for Beginners Unit helps.
Thanks,
Rui
Andrew Hetherington answered 8 years ago
Thanks Rui,
This is the first project I’ve attempted since I joined. I’ve had a look at the Beginners Unit and realise I should have started there for the basics.
Sorry to have bothered you.
Thanks again,
Andrew
Rui Santos Staff answered 8 years ago
No problem! No bother at all. I’m here to help.
Have a great day,
Rui