Initial Phase

What our group plans to make is a portable window cleaning robot suitable for everyday household usage. This particular cleaning robot utilises the thrust of an EDF ducted fan to push the robot against the window, allowing it to climb up the window. We plan to equip 4-wheels to the robot in order to allow it to move vertically and horizontally. The central cylinder portion is to be fitted with the EDF ducted fan.

The first design is shown below.

After consulting our advisor, we made several design changes in order to accommodate our components.

The central portion was modified to accommodate and make space for EDF ducted fan. Four bracket were added to hold the wheel motor drivers in place.

The second design is shown below.

 

Prototype

After trying out different 3D-printed components, we assembled our first prototype, which is illustrated below. This particular design was chosen due to its convenience in assembly, air flow allowance and compactness.

 

 

We made a few minor changes to our first prototype and assembled our second prototype below.

The second prototype included features:

• Grills: to protect us from accidentally touching the ducted fan components
• Skirting: to enhance suction to the window
• Deconstructed top cover: division into 5 separate pieces instead of a one-piece top cover allowed for a much easier assembly process

Final Product

 

Here are some photos of our final product.

The cloth skirtings allow Windowbot to suction onto the window, while acting as the cleaning component simultaneously.