25/07/2019
Agenda:
- Settle servo motor wires
- 3D printing of holders and casing for robot
Task accomplished:
- Crimping and testing of DIY RJ45 cable for the slip ring
- Soldering and heat shrinking of jumper cables to remaining slip ring wires for IMU
- Started prints for component holders (switch, camera and secondary platform)
In the morning, Rachel made a trip to Sim Lim Square to procure an RJ45 wire crimper and wire tester for our group (after many valiant attempts of self-sourcing them)! 🤩
RJ45 cable tester and wire crimper
Since the slip ring comes with 18 individual wires as shown previously, we would need to crimp 8 of them to DIY our own LAN cable to insert into the client transceiver (rotary side) and switch (stationary side). We only managed to get the wires to work after multiple failures, even though we had 3 people performing the task 😅😅
Finally getting the crimp right!
At night, we then attached 5 male jumper wires to the stationary side of the slip ring, and 5 female jumper wires to the rotary side, for connection between the RPi and the IMU. We also started several 3D prints for holders to secure the components in our tank.