Axx Solder is a STM32 based soldering iron controller for JBC C115, C210 and C245 cartridges. Two different versions are designed around the same PCB and software - one soldering station based on the JBC ADS stand and one portable version. The hardware takes a DC input source of 9-24V OR a USB-C Power Delivery source. The recommended power supply is a Meanwell LRS-150-24 which can power all compatible JBC irons at full power. If a 65W, 20V USB-PD supply is used then NT115 and T210 handles can be powered at full power and T245 at limited power. The software is written for the STM32G431CBT6 and implements a PID for temperature control, TFT display driver, sleep function when the handle is at rest and functions for read/write user settings to flash. Enclosures for both station and portable versions are 3D printed and design files are available