Here is a little robot that assists you while soldering. The Robotic Helping Hand comes with tracking to reposition the PCB as you move. It also has a lock function for circuit boards. This robot has a 3D printed body & base and 2 metal geared servos.
This kit comes with a MPU6060 gyroscope/accelerometer, Arduino Nano, and everything you need to put it together. You can find out more about it here.