Small portable soldering irons are all the rage [electronoobs] Decide Build one yourselfAlthough the design is not as stylish as the commercial unit, it looks pretty good considering it has its own battery.
Of course, the question is: is it effective? You can see in the video below that it will melt the solder in about 10 seconds. It weighs about 100g and should be very comfortable to use.
A small display shows operating parameters. We also like the threaded mounting on the tip. The soldering iron tip requires approximately 4 A of battery current to produce a 15 W iron. However, the tip does not have a built-in thermocouple, so you cannot accurately control the temperature of the tip.
Undervoltage detection is a bit problematic, so if the voltage drops too low, you really need to prepare to manually remove the battery. This is a bit painful, we may have considered connecting a physical power switch to avoid opening the 3D printed enclosure too frequently.
There is an Arduino, a MOSFET and some instruments for monitoring battery current and tip resistance on the PCB. Of course, you can perform any operation you like on the firmware for any number of customizations.
Although the iron looks a bit like TS-100, it does not contain batteries, so you must bring an external power source or battery. But there are commercial irons with batteries. Of course, there are other similar projects, but we like the appearance and scalability of this project.