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Possibly confusing labeling on DIY wiring diagram #255

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RocketPotato opened this issue Jan 17, 2024 · 0 comments
Open

Possibly confusing labeling on DIY wiring diagram #255

RocketPotato opened this issue Jan 17, 2024 · 0 comments

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@RocketPotato
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The wiring diagram on this page appears to indicate the voltage of the connection between the 5v pin on the D1 mini and the TP4056 is 5v.
The TP4056 does not have a voltage booster, so the largest voltage this will see is the max voltage for the battery (4.2v based on TP4056 specs. In my testing it's within about 100mV of VBAT) The voltage regulator on the D1 drops this to 3.3v for the rest of the system. (Many D1 boards label this VBUS instead of 5v.) This also means the battery sense wire could be spliced off the "5v" wire with only a small loss in accuracy.

My concern is that someone may treat this diagram like a schematic and try to substitute a true 5v logic part into the circuit and be disappointed when it fails to work correctly.

I suggest renaming this wire to VBUS or V+ to avoid confusion. This seems low priority to me, so I wouldn't expect someone to do it unless they are making new diagrams for some other reason

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