A HT-tube (polypropylene, DN32) is used as basic housing and to mount all modules together.
The electronic module consists of the µ-Controller (Teensy 3.6), a RF-Module (nrf24l01+), the inertial sensor (MPU-9250), a rechargeable battery and charging electronics. All mounted on a base printed circuit board. 3D-printed battery holders are used to mount the battery. Together with an end cap, they are also used to hold the complete module in the HT-tubing. O-rings are used for shock-absorbing.
A 3D-printed switch insert is used to mount the power- and the mode-button. Two play-switches are directly mounted ito the tubing. All switches are connected via a flat ribbon cable to the electronic module.
The used torches are replaceable. A holding mechanism from a kitchen mixer (Krups 3 Mix) is used to realize replaceability. Mixer hooks with different torch styles applied to them can easily be replaced. By pushing an eject lever, the current used hook can easily be removed. A screw cap and a suitable M23-thread (part of a circular connector) is used to ensure additional locking of the hook.
A brass fitting is used as holder for a counterweight. This maybe necessary because the Kevlar-torches can be relative heavy.
Bill of Material
|part||quantity||source of supply|
|switch insert||1||Shapeways: switch insert|
|end cap||1||Shapeways: end cap|
|battery holder||4||Shapeways: battery holder|
|eject lever||1||Shapeways: eject lever|
|hook holder adapter||1||Shapeways: hook holder adapter|
|torch holder||1||Shapeways: torch holder|