WY709 high frequency soldering station transparent version (1)-PD to DC small board

BOM, assembly diagram, firmware, and debugging instructions can be found in the attachment.
The decoy solution is a microcontroller + FUSB302
based on the previously made hardware solution. It supports PD2.0 and PD3.0 adapters. PD3.1 is not supported. The QC protocol does not support
automatic connection after connecting the adapter. Decoy 20V, can be directly connected to WY709 high-frequency soldering station, with physical switch and external power input interface. The soldering station can choose to be powered by PD or external power supply
1. Adapter selection:
(1), 203 handle welding type heating core:
100W For the above laptop PD adapters and mobile power supplies, such as Xiaomi AD100G, Savior C135 gallium nitride, IP5389 mobile power supply, etc., the mobile phone gallium nitride adapter will explode (even if it is 120W)
(2), 203 handle integrated heating core
: The integrated heating core does not work properly when tested at 20V, which will cause the power output to hiccup. The phenomenon disappears after the voltage rises to 24.5V.
Only the Savior C135 gallium nitride or higher power adapter can be used.
The soldering station needs to add a power booster board
2. Hidden function
: Long press the touch switch and the light will flash when the power is turned on. Release it to enter the voltage selection. Touch the switch to select the gear
red 5V, yellow 9V, green 12V, cyan 15V, blue 20V. Press and
hold to save. The next time the power is turned on, it will output directly. This gear
can be used as a daily tool to power on other boards.