Brandon LeMay

PORTFOLIO

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3D Render
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Rendered Top View
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Rendered Bottom View
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Schematic View
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EAGLE Board View
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EAGLE Top Board View
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EAGLE Bottom Board View
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Render of ORBIT II
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Render of Digging Robot
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Picture of ORBIT II at testing site

2019 RDT Control Board

The 2019 RDT Control Board was made for the NYU Robotics Design Team, to control the two robot system ORBIT II. The system consists of a transport robot to bring the digging robot across an obstacle field and deposit the digging robot in a mining field. The digging robot then utilizes a drum outfitted with shovels to mine simulated regolith, filter out dusty regolith and store icy regolith. The digging robot then deposits the icy regoith into the transport robot, which brings it back across the obstacle field and deposits it in a bin.

This board was designed to consolidate control 4 distinct subsystems into one board: a digging system, a storage and filtration system, a locomotion system, and a deposition system.

This PCB was developed by creating 4 prototype boards, then combining the schematic design of each PCB to yield a board capable of being populated with different components to control each system uniquely. The list of possible components to be used on this board is given here:

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3D Render
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Rendered Top View
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Rendered Bottom View
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Schematic View
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EAGLE Board View
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Assembled Sunbot

Sunbot Control Board

This board was made for a summer research project making robotic appendages for plants. The basic idea is the robot holds a terrarium filled with plants, and drives around to seek the brightest area for the plants. Multiple sunbots can be used in a group to communicate and cooperate in finding the brightest area.

To this end, a control board was fabricated with the following features:

  • An Arduino Nano to handle input and output operations
  • 2 voltage dividers for measuring the resistance of photocell resistors that measure the light levels around the robot
  • A 2-channel motor controller to control drive wheels that steer the robot
  • An XBee radio to communicate with the rest of the swarm
  • An IR LED and receiver to communicate with earlier generations of sunbots
  • Voltage regulator circuit to stabilize output from onboard solar panels
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Full Holder
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Empty Holder
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Rendered Punch Holder
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Design Sketch

Leatherworking Chisel Punch Holder

I have a set of interchangable leatherworking chisel punches, but I didn't have any place to store them beyond tossing them all in a bag. So to have a better place where they can live and not scratch each other or me, I waterjet cut a piece of scrap steel to hold all the tips and the handle.

Each of the holes was cut undersized on the waterjet so the variable kerf of the waterjet wouldn't affect the fit of the threads, then drilled out to their final dimension (7.5mm diameter) on a drill press, and tapped by hand to hold M8 bolts.

To add some extra style to the holder, I added in some lines and arcs that were cut on the waterjet with higher speed, lower pressure, and without abrasive material so that they only resulted in surface engravings.

For the handle, I cut part of an M8 bolt and used some loctite to glue it into a threaded hole.

To finish it off I gave each hole a small countersink to make it easier to screw in each threaded tip

Feather ISP Board

Feather ISP Header

A simple board meant to connect to a feather similar a stackable shield and break out the VCC, GND, MISO, MOSI, RST, and SCK pins in a standard 6-pin ISP Header