Daniu soldering helper Li Ion mod

thingiverse

This is a work-in-progress modification of the daniu soldering hand, swapping out the standard 3 AAA batteries for a single Lithium Ion battery. The new design allows for charging through USB connectivity. The bottom plate has been replaced with a custom holder that cradles both the flat battery pack and a power bank circuit board. To undertake this conversion, you'll need to: * Dislodge the original AAA battery holder by prying it loose with a pair of pliers; be aware that excessive force may cause the sides to break. * Remove the USB Type A connector and substitute it with the LED indicator instead. * Insert two 47-Ohm resistors in parallel, which equates to approximately 24 Ohms, between the power bank circuit board and the LEDs. This modification will help reduce voltage output. With this adjustment, the LEDs should draw a stable 80 milliamperes of current, thus preventing them from being overwhelmed (and thereby extending their lifespan).