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59 Bluetooth Controlled Ouija Board
Luke Staunton
Nikhil Mathews
Oluwatobi Ijose
Jacob Bryan design_document0.pdf
Luke Staunton - stauntn2

Oluwatobi Ijose - okijose2

My partner and I are trying to develop a Ouija board magic trick, where someone can control the position of the Ouija board planchette. The panchette would contain hidden pieces of metal, and the board itself would have an electromagnet inside that is repositioned by two moving rails. This electromagnet would be able to stay hidden while moving the panchette "magically". This electromagnet will need to have its power controlled by a bjt circuit in order to provided the needed current. The rails would each be controlled by linear feedback control systems using IR displacement sensors. These rail control systems and the magnet BJT circuit would be controlled by a micro controller connected to a bluetooth receiver (all on PCB we design).

The receiver (we plan to purpose the HC-05 Bluetooth Module) would connect to an iPhone app that we would develop and send a PWM to the controller that would tell it to turn on the magnet and move up, down, left or right, or turn off the magnet. As of now we are imagining it to be powered from an electrical outlet as opposed to batteries for simplicity.

We would love to hear feedback on the idea, especially related to bluetooth experiences people have had. We are currently considering the HC-05 Bluetooth Module as our means of BT control and researching microcontrollers (possibly MSP430G2 MCU) to use on the final design. But we plan on using an arduino for the development phase.

Recovery-Monitoring Knee Brace

Dong Hyun Lee, Jong Yoon Lee, Dennis Ryu

Featured Project


Thanks to modern technology, it is easy to encounter a wide variety of wearable fitness devices such as Fitbit and Apple Watch in the market. Such devices are designed for average consumers who wish to track their lifestyle by counting steps or measuring heartbeats. However, it is rare to find a product for the actual patients who require both the real-time monitoring of a wearable device and the hard protection of a brace.

Personally, one of our teammates ruptured his front knee ACL and received reconstruction surgery a few years ago. After ACL surgery, it is common to wear a knee brace for about two to three months for protection from outside impacts, fast recovery, and restriction of movement. For a patient who is situated in rehabilitation after surgery, knee protection is an imperative recovery stage, but is often overlooked. One cannot deny that such a brace is also cumbersome to put on in the first place.



Our group aims to make a wearable device for people who require a knee brace by adding a health monitoring system onto an existing knee brace. The fundamental purpose is to protect the knee, but by adding a monitoring system we want to provide data and a platform for both doctor and patients so they can easily check the current status/progress of the injury.



1) Average person with leg problems

2) Athletes with leg injuries

3) Elderly people with discomforts



Temperature sensors : perhaps in the form of electrodes, they will be used to measure the temperature of the swelling of the knee, which will indicate if recovery is going smoothly.

Pressure sensors : they will be calibrated such that a certain threshold of force must be applied by the brace to the leg. A snug fit is required for the brace to fulfill its job.

EMG circuit : we plan on constructing an EMG circuit based on op-amps, resistors, and capacitors. This will be the circuit that is intended for doctors, as it will detect muscle movement.

Development board: our main board will transmit the data from each of the sensors to a mobile interface via. Bluetooth. The user will be notified when the pressure sensors are not tight enough. For our purposes, the battery on the development will suffice, and we will not need additional dry cells.

The data will be transmitted to a mobile system, where it would also remind the user to wear the brace if taken off. To make sure the brace has a secure enough fit, pressure sensors will be calibrated to determine accordingly. We want to emphasize the hardware circuits that will be supplemented onto the leg brace.

We want to emphasize on the hardware circuit portion this brace contains. We have tested the temperature and pressure resistors on a breadboard by soldering them to resistors, and confirmed they work as intended by checking with a multimeter.

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