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Ralim / IronOS

Open Source Soldering Iron firmware
https://ralim.github.io/IronOS/
GNU General Public License v3.0
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Setting USB-C Negotiation Voltage in v2.16 on Pinecil #1191

Closed sklepa closed 2 years ago

sklepa commented 2 years ago

Is there a setting that I can choose negotiated voltage over powering via USB-C? There was such feature in my first OS version which was 2.14. My power bank is capable of 12V and it worked on v2.14. Now i updated firmware to 2.16 polish lng. and iron negotiates only 10V(strange value, ADC is calibrated). Am I forseeing something? Cheers

Ralim commented 2 years ago

No IronOS version has supported you changing the PD voltage. Only the QC voltage can be changed.

Make sure you are using a C-C cable connected to a USB-PD capable usb-C port.

You can also verify if it's using QC or PD in the debug menu (hold - on home screen until it shows up, press + to go through readouts)

Ralim commented 2 years ago

For PD it uses the tip resistance (around 8 ohms) and the power supplies advertised voltage and current settings to select the highest voltage possible while keeping peak current below the rating of the power adaptor.

A very low wattage PD adaptor could negotiate 10V

sklepa commented 2 years ago

Yes I mean QC voltage, there was such option in 2.14 and i was able to set 12V and it worked on USB-A to C previously. In debug menu(when connected A to C) PWR shows PD then after couple seconds QC for a second and back to PD :o strange. On C-C the "PWR PD" is stable. Power bank supports QC, this is 18W baseus 10Ah

Ralim commented 2 years ago

Most likely your powerbank only supports QC if negotiated quickly. Try turning down (or to 0) the PD timeout variable to force the PD negotiation to stop earlier on. QC is a minefield with lots of problems, so support is always hit and miss. Since most people use PD, the Iron tries for PD, if that fails then it tries for QC.

Note for Pinecil QC is not reccomended as it generally only does 12V.

sklepa commented 2 years ago

Turning down time does not helps. But anyway, Thank You very much for clarifying topic :) I will use it via C-C connection. Of course on 12V it's not performing it's tops, but this is what I have, and for mobile use it makes a very portable set. For grid connection I managed to buy very sexy delta PSU ;> Thanks for Your work! Greetings from snowy poland!