A smart, portable soldering iron project. It utilizes USB Power Delivery to draw up to 65W of power from standard USB-C bricks, achieving heat-up times of under 8 seconds.
Circuit Overview
- Power Path: Incorporates a USB-PD physical layer controller (FUSB302) to negotiate 20V from the power source.
- Control Loop: A PID controller implemented in RISC-V assembly and C adjusts the PWM feed to the heater element based on feedback from the internal thermocouple.
Here is a block diagram of the setup:
