Good work.  Mainly I wanted to impress the idea of always asking 'from where?'
Whether you are talking about driving distance, or voltages, the point of reference should always be the first thing established.
With voltages, it is usually assumed to be 'with respect to ground', but it doesn't hurt to ask.  And it's very helpful to be able to juggle the reference point around in your head when you are visualizing a circuit.

Yes.  You could look it up, or you could solve for X: 
8.76/12.80 = x/(x+6)
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More homework from G1 

I tried it with the original equation and got a 13 so I looked it up and it said 10 so I retried it using a different denominator and got closer

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Ok I wanted to turn in my homework for bonus points but I was like wow I better do the original assignment 
And yes I've seen the answers but it's been a while so here we go.
First I wanted to check a similar scenario on my bronco and I felt sorry for my hf meter so I verified some suspicions
Positive voltage
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Negative voltage
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I think I see 🙈 a trend

So here we go I filled out my worksheet and yes I was scared     
The way i did it in each case I started at ground then went from there

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Fun fact....one time I had a 36v trolling motor for my boat and reading about and trying to figure out how to connect it and the three 12v batteries blew my mind.

 

Quote from: Loudthud on March 25, 2025, 06:25:20 PMWhat are the little circuit boards attached to the lid ?

Battery and charging board + MT3608 voltage booster set at 15v.

Ok I'm back with some results
It dawned on me that I had a decade resistor box so I was like hey that's pretty rad I can just dial in where voltage starts to roll off 

Unfortunately I looked at it and it only goes to 1000k (which I presume is one megaohm) 

Anyhow I started looking around and quickly found a 1M ohm resistor
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Ok cool so let's try 2M ohm
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Ok....there we go

I needed something in between so I looked around and found I think a 220k ohm resistor and added it to the 1M ohm 
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And the multimeter is already taking notice of the increased resistance...I think 

What are the little circuit boards attached to the lid ?

Man that's crazy awesome 

I was gonna comment on your soldering skills which look hella awesome 

For real looks like point to point wiring on an old tube amp.   

But then seeing that last post I'm floored 

Looks like you clearly have the dexterity skillz to accompany the acumen 

I'm way beyond impressed 

And, finally, the finished build in a Barkley's tin:



Unfortunately I fried my only 4049, so I botched an adapter to a 4069 to use it for now (thanks Runoffgroove!)

Quote from: saturated on March 24, 2025, 02:10:57 PMI'm thinking it has something to do with my meter's (internal resistance?) 

Yes.  You could look it up, or you could solve for X: 
8.76/12.80 = x/(x+6)

edit:  my mistake, should have read 13.8, not 12.8, see below.

Finished build:



Used a tiny 12v bulb instead of a resistor (because it looks cool when the brightness changes with harder picking).

Tried a 10M resistor in parallel with the last stage (suggestion from someone on DIYStompboxes), barely noticed any changes tbh. Leaving it there cus I'm lazy.

Sample: