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Student, Programmer (Project Leader)
 · MontréalCanada
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TRUST HACK

Bill of materials

Part Price Order Status
1x Teensy 3.2 26,76C$ Arrived
2x TB6612FNG Dual DC Motor Driver 3,73C$ Ordered
2x LG 18650 Batteries 18,94C$ Arrived
1x 9 Axis 10DOF MPU9250+BMP180 9,29C$ Ordered
1x 5v Voltage regulator module 1,52C$ Ordered
1x Adjustable voltage regulator (Step-up) 1,59C$ Ordered
2x 18650 battery charger board 1,42C$ Arrived
1x HC-05 (Bluetooth module) 4,50C$ Ordered
1x Pack of 20 7x9cm prototyping boards 9,44C$ Ordered
1x 22 gauge wire (black, 25’) 3,04C$ Arrived
1x 22 gauge wire (red, 25’) 3,04C$ Arrived
4x N20 gearmotors 300RPM, 12v 14,05C$ Ordered
1x Breadboard 3,15C$ Ordered
Heat shrink kit 8,03C$ Ordered
Main power switch 2,68C$ Ordered
1x 620pcs header connectors 8,61C$ Ordered
1x 100cm 16 gauge black wire 2,42C$ Ordered
1x 100cm 16 gauge red wire 2,42C$ Ordered
Mini USB type B connectors 5,83C$ Ordered
1x Pack of 5 Ultrasonic Modules 5,50C$ Ordered
1x Pack of JST connector kits 6,74C$ Ordered
1x 2Pcs Machined pin header Male 1,34C$ Ordered
1x 3pcs Machined pin header Female 1,34C$ Ordered
1x 10pcs Standard pin header Male 1,92C$ Ordered
1x 20pcs DIP switch 3 positions 2,51C$ Ordered
3D printed parts ~10C$
TOTAL 159,89C$

Total budget for this project: 150,00C$

Contributions
Émile Blais-Villiard

Excellent leadership and organizational skills demonstrated by Emile in setting up his parts list. Learn from this organization everyone!

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Student, Programmer (Project Leader)
 · MontréalCanada
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[UPDATE]

Ordered:

  • Breadboard
  • Heat shrink kit

the estimated delivery is between May 26 and July 12… hopefully it’s near the first one.

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Student, Programmer (Project Leader)
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[UPDATE]

Arrived:

  • Pack of 5 18650 battery chargers (will be using 2 for this project). Note: they use the old, more bulky micro usb connector. I don’t have any cable for this type so I might just not use them and wire my own connector to the boards later

Changed:

  • Compass module now is a MPU9250+BMP180 board. It costs a bit more but it will allow for a wider range of sensor data to be obtained. For this project it’s not much use but I plan to use the resulting board in other projects where it will definitly be useful.
  • 5x7cm protoboards to 7x9cm boards. This is needed as the power delivery modules are bigger than before. I can always trim down the boards as needed so it will not matter that much in the end. The overall rover lenght might suffer a bit however.
  • 12AWG wires to 16AWG wires. The site I used to know what Amperage which AWG wire sizes could transmit was wrong. I’m still using a fairly large diameter wire just to be safe, but I believe that 16 gauge will be much more malleable than 12 gauge.

Added:

  • Pack of 5 Ultrasonic Module sensors. Will be using 4 on this project, 1 on each side of the rover to let it be self-aware of the walls surrounding it and to work with the fact that it is an omnidirectional vehicule.
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Student, Programmer (Project Leader)
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[UPDATE]

Ordered:

  • Teensy 3.2
  • 2x LG 18650 cells
  • Red and Black 22AWG gauge wires
  • (not in the list but useful for this project) small cheap “3rd hand” claws with a magnifying glass
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Student, Programmer (Project Leader)
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[UPDATE]

Updated price and changed links of:

  • HC-05
  • Step-up voltage regulator
  • Motor drivers
  • Gearmotors
  • 5v step-up/down voltage regulator
  • Power switch
  • Wire jumper connector kit
  • Main Total. It’s now slightly over budget but that’s fine since I have more than enough funds now.

Added:

  • JST connector
  • Machined pin headers, male and female. These will be used for connecting the Teensy 3.2 because I want to be able to remove it for other projects if needed. (it’s a pricey controller, better use it well)
  • Standard pin headers. For soldering all other boards and making output/input pins on the main board.
  • 3 positions DIP switch. This will be used to tell the microcontroller in which mode it is. This way I’ll be able to make a single firmware for multiple projects.

Note: I also changed all links to be as short as possible to save some space in the post and make the markdown code more readable.

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Student, Programmer (Project Leader)
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[UPDATE]

Ordered:

  • Everything

The very vague delivery time is “between June 18th and August 7th”. That’s because I ordered 23 items at once… hopefully the more important ones arrive earlier.

So now that all items are on their way, I’ll try to work out how they will all fit together in Solid Edge before actually getting them… because that’s always fun. (new task incoming I guess).

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Student, Programmer (Project Leader)
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[UPDATE]

Arrived:

  • Teensy 3.2 (I knew it was a small board, but it’s shocking to have it in person. It’s the same width as an Arduino Nano but shorter in length by about 3 standard pin headers)
  • LG 18650 Cells. These are bigger than I thought but it’s still alright considering they have 3500mAh in storage.
  • Black and red 22AWG gauge wires. Will have to wait for the 16AWG ones to wire the battery however.

Getting parts like this makes the project feel a lot more real, it’s very encouraging! I’m going through some rough stuff in my life right now so seeing how this is going is giving me some hope. I’ll look more seriously into buying a 3D printer next week, which will help with much more than just this project.

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