I used the pin numbers from your schematic.

Cheers lad. When you said pull-down res, did you mount a 10k in the pull down? My original circuit only has one 8.2k res on the not_in node (pin 1 connecting to res and capacitor)

 

When you said pull-down res, did you mount a 10k in the pull down?

Yes. Initially I was going to use a switch to trigger the circuit, but I had a signal generator mounted in the box with the scope, so I used it instead so I didn't have to worry about switch bounce or triggering the scope. I left the resistor because it was a convenient point to connect the signal generator.

 

Yes. Initially I was going to use a switch to trigger the circuit, but I had a signal generator mounted in the box with the scope, so I used it instead so I didn't have to worry about switch bounce or triggering the scope. I left the resistor because it was a convenient point to connect the signal generator.

Would you mind sharing with me the schematic of the connections? I presume you're using 2 resistors?
Also, thank you for taking the time to mount it - and also to anyone who has replied thus far

 

Would you mind sharing with me the schematic of the connections?

It's the same as your schematic with the addition of the pull down resistor:

The device with the bubble on the gate is PMOS.

 

It's the same as your schematic with the addition of the pull down resistor:
View attachment 194679
The device with the bubble on the gate is PMOS.

Cheers, I'll retry to mount it on a breadboard today

 

It's the same as your schematic with the addition of the pull down resistor:
View attachment 194679
The device with the bubble on the gate is PMOS.

Tested it out. Worked fine, I probably must have mounted it incorrectly. Thank you all for the help!

 

Care to explain?

The circuit from @ronsimpson simply replaced the active devices with a resistor. The disadvantages are speed, power dissipation, and pull up strength. CMOS is superior in all regards.