• Log 6 - 08/04/2025

    theo.ducarne • 04/08/2025 at 10:01 • 0 comments

    - Today, we looked at how to attach all the components: for the battery, we're going to make a box with a 3D printer. We'll leave a hole (for the cables) and the box will be fixed with glue directly onto the boat.

    For the Arduino board, for now we're going to attach it to the boat with wires so that it stays in place, otherwise we can also make a box with a 3D printer if it's not too complicated (with the height of the box). 

    The rudder motor is also housed in a box, with 1 hole on each side to connect it to the Arduino and the rudder. The rudder structure will be connected directly to the boat (with a hole in the hull, as it will be below the hull).

    The motor, which will be connected to the boat's steering system, will also be housed in a box. The structure used to move the boat forward will be connected to the boat. It will be fully underwater and extend beyond the boat's stern.

    - We decided on the location of each component (see photo, update: between the motor and the battery is the Arduino board)

  • Log 5 - 01/04/2025

    theo.ducarne • 04/01/2025 at 10:45 • 0 comments

    - For this session, we made progress on how we're going to move and turn our boat, starting with the shape of the propeller. See https://eduscol.education.fr/sti/sites/eduscol.education.fr.sti/files/ressources/pedagogiques/17682/17682-hydrodynamique-comment-faire-avancer-un-bateau-ensps.pdf

    - Next, we're going to need a servomotor that can turn very quickly, as we need to transform the rotary motion into linear displacement.

    - We've made some changes to the fusion model of our boat

    - Some parts have been offset (see photo)

    - Improved the rudder

    with different materials (more solid) to make it more real and see if it's consistent with our project.

    - start of 3D printing of the boat's hull

  • Log 4 - 18/03/2025

    theo.ducarne • 03/18/2025 at 10:24 • 0 comments

    - We made the propulsion motor for the boat :

    To link the servo motor to the propellers, we'll use a drive shaft (a metal rod that connects the motor to the propeller through the boat's hull).

    The material will have to be water-resistant (like stainless steel or brass or engineering plastics such as polyacetal and nylon), or even have a tube around the shaft to keep water out. The whole assembly (motor, propellers, drive shaft) needs to be very stable. 

    Dimensions have yet to be defined, as the bigger the boat, the more powerful the motor, the thicker the shaft must be to prevent it from bending or breaking, and the same goes for the propellers.

    - We redesigned the dimensions of the boat, to make it easier to fit the components into the hull. The new dimensions will be: 60 cm in length, 18.5 cm in height and x cm in width. 

    - Start of our boat model on Autodesk fusion (view photos)

    - V2 production 

    - For the next session, we need to finish the model on autodesk fusion.


  • Log 3 - 11/03/2025

    theo.ducarne • 03/11/2025 at 11:46 • 0 comments

    - Today, we started a first version with a model to see if the dimensions were possible (can the engines fit, easy access).

    - We also looked at whether the boat could float easily or not and how we will assemble the wood.

    - We tested the different engines and decided on the location of each component (see photo).

  • Log 2 - 04/03/2025

    theo.ducarne • 03/04/2025 at 09:51 • 0 comments

    - We found the dimensions of our boat (length 35 cm, width 12 cm and height 8 cm, enough to accommodate the various mechanisms).

    - Choice of materials (mainly wood), use of waterproofing for flotation. The glass will be plastic. 

    - We decided to use two motors (one to move the boat forward and backward, and one to turn the rudder). 

    - Start of the sketch (see photo)

    - Finish the sketches with the bottom and side views for the next session

  • Log 1 - 25/02/2025

    theo.ducarne • 03/04/2025 at 08:31 • 0 comments

    - We looked for various projects, and some interested us, like the car, or a crane.

    - However, we finally settled on a motorboat project. So we began researching the feasibility and various features of the project. 


    - Next time, we'll have to detail the boat for project feasibility and make a sketch.