High ceilings can make houses feel open and ventilated, but they usually have inaccessible lighting. In order to better solve this problem, [mattwach] has manufactured an electric bulb changer, which makes the work easier.
Bulb changers already exist, but they usually need to be used on the shaft with lamp accessories, which can be difficult for chandeliers and many other lamps. Instead, [mattwach] is designed to allow the device to be used at a 90 degree angle and motorized to increase ease of use.
A 12V gear motor completes the work of the rotating device, and there is enough torque to complete this work. The flanged joint is used to connect the motor to the bulb changer itself. Then, the attiny85 microcontroller is used to control the motor through L293D H-bridge driver. PS2 finger bars are connected for user input, all electronic devices are installed on the broom bar, and the bulb end actuator is installed at right angles.
Then, changing the bulb is very simple. Just slide the end effector onto the bulb and flick the thumb lever in the direction of unscrewing the bulb. It can then be removed and replaced with a new bulb, which can be screwed in by pushing the thumb lever in the other direction.
Usually, it is quite rough to complete such a task on the top of a high ladder. Instead, it became easy to complete the work in a safe and overlooking walkway. It took less than half an hour to replace a 15 bulb chandelier.
By the way, if you want to change the bulb, you may be interested in special Royal lights that are not allowed to buy. Play the video after the break.