Sagan delay power pin continuity question

[Raspymcnasty]

I’m about done with building the board but i goofed on the 7 pin. I accidentally soldered on the wrong side, so i had to desolder it and might have possibly damaged it.

Is there supposed to be continuity on power pin 1 and power pin 4?

 

[PJS]

Hard to read, but one of them seems to be labelled LGND and the other GND. That suggests to me that they are both grounds with the LGND being a ground with a particular purpose (for example it is quite common in digital circuits to have a digital ground and analog ground that are only connected at a single point to try and make sure digital clock noise doesn't get into the analog pathways). In the end though, all ground paths will be connected at some point. I would expect that LGND and GND should indeed be shorted together.

 

[Bricksnbeatles]

Hard to read, but one of them seems to be labelled LGND and the other GND. That suggests to me that they are both grounds with the LGND being a ground with a particular purpose (for example it is quite common in digital circuits to have a digital ground and analog ground that are only connected at a single point to try and make sure digital clock noise doesn't get into the analog pathways). In the end though, all ground paths will be connected at some point. I would expect that LGND and GND should indeed be shorted together.

I’ve seen quite a few circuits though with an analog ground and digital ground, where there aren’t directly shorted together, and are instead joined by an extremely small resistor between 10-50 Ω, leaving the potential of the analog ground a few μV over digital ground. I’ll see if I can find an example of what I mean

 

[Raspymcnasty]

I’ve seen quite a few circuits though with an analog ground and digital ground, where there aren’t directly shorted together, and are instead joined by an extremely small resistor between 10-50 Ω, leaving the potential of the analog ground a few μV over digital ground. I’ll see if I can find an example of what I mean

Thank you for your response! This answers my question and follow up question.

 

[Raspymcnasty]

Hard to read, but one of them seems to be labelled LGND and the other GND. That suggests to me that they are both grounds with the LGND being a ground with a particular purpose (for example it is quite common in digital circuits to have a digital ground and analog ground that are only connected at a single point to try and make sure digital clock noise doesn't get into the analog pathways). In the end though, all ground paths will be connected at some point. I would expect that LGND and GND should indeed be shorted together.

Perfect thank you!

 

[ICTRock]

Paying attention to your schematic, LGND and GND are separated by the resistance across the LDR and LGND is used for the LFO circuit.