Comments (4)
If you connect it to a dumb 5 V adapter of course it will not get enough power to be useful.
Yes but that's not the question the question is.. if you connect to a PD source that only offers 2.5W should the iron even engage soldering mode and attempt to get to temp? (the current behavior is.. a PD negotiation completed.. and even if the only offered profile was 2.5W you can enable soldering mode. should there be a minimum wattage in a pd profile that's 'acceptable'?
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I think that the firmware in its current form uses is the easiest and cleanest way to handle PD without needlessly cluttering the code; it is also useful for troubleshooting.
Of course you could add a limit, but why? That time and energy is better spent writing some useful code instead of writing something that essentially would just be there because the user didn't read the owners manual :)
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If you connect it to a dumb 5 V adapter of course it will not get enough power to be useful.
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By turning on the mosfet...
With a normal t101 tip with a nominal resistance of 8.2ohms.
5/8.3 == .6A 3W (not too far above the .5A 2.5W the supply allows for)
With the short pinecil tips the instantaneous draw is
5v/6.5ohm = 0.8A (4w)
with #1868 this gets even more exciting 5v/4ohm ==1.25A and 6.25W
and while it's averaged and smoothed over some Time period that's double what the source allowed so unless it's pulsing the mosfet to stay inside that power/current window somehow it's well outside spec.
Which is substancially more than the pd advertisement was (0.5A (2.5W) so if a pd supply doesn't advertise at least 5V 1A you shouldn't turn on that mosfet. just like 4.95V
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Related Issues (20)
- Animated Boot Logo. Continuously repeat animation when boot logo duration is set to infinity. HOT 8
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- MHP30 Lower minimum temperature than 100C? HOT 6
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- TS101 only working in QC mode with PD3.1 Powerbank HOT 21
- Pinecil V2 won't switch to 20V on 5v/20v only capable powerbank HOT 6
- Disable Bluetooth by default to minimize attack vectors HOT 5
- How do I use a Bootup logo on TS101 on V 2.01 HOT 6
- Support Miniware MHP50? HOT 21
- Possible bug: false live temperature spikes in v2.22 on Pinecil HOT 4
- Problem In Understanding Language Code UK HOT 5
- MHP30 USB-PD Boot Failure HOT 3
- MHP 50 Overtemperature HOT 2
- STM32 died after flash read. HOT 4
- Support Sequre T55 hot plate HOT 12
- Not included dependency for unit tests HOT 7
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