Project

# Title Team Members TA Documents Sponsor
49 Smart autochasing lamp
Feiyang Liu
Jincheng Yu
Yiyan Zhang
Luoyan Li design_document1.pdf
design_document2.pdf
final_paper1.pdf
other1.pptx
proposal2.pdf
proposal1.pdf
video
# **Team Members**

Feiyang Liu (feiyang5)

Yiyan Zhang (yiyanz3)

Jincheng Yu (jy54)


# **Problem**

When performing precise tasks on a desk, such as soldering or assembling LEGO, the position of the lamp can often be a source of frustration. Shadows cast by the hands can obscure the parts you're searching for, and tiny components in your hands may not be sufficiently illuminated, leading to discomfort and inefficiency. Furthermore, my ceiling light broke last week, and I've had to rely solely on a desk lamp for illumination. In such a dark environment, the brightness of the desk lamp is overwhelming and strains my eyes. There's a need for a desk lamp that can adjust its brightness and color temperature according to external light conditions. Additionally, the traditional ways of controlling desk lamps are inconvenient, often interrupting our workflow to make adjustments.

# **Solution**
We propose a smart desk lamp equipped with a camera and several servo motors forming a mechanical arm. This lamp can capture images and communicate with a computer for image processing. It can identify human hands and move the lamp closer and at an angle to the hands as they move, minimizing large shadows on the desk. Through a photoresistor, it can respond to changes in external light sources. The camera can also detect specific hand gestures, such as opening the thumb and forefinger to increase brightness or pinching them to decrease brightness. These gestures can also control the computer or play music, which I believe is simpler than voice input.

# **Subsystem**
## Mechanical Arm Subsystem:
Three servo motors and linear potentiometers ensure the basic movement of the mechanical arm, with additional circuits for these components. To avoid interference between light sources, a small aperture for the light-sensitive element will be located on the mechanical arm. This data is communicated to the central control subsystem.

## Lighting and Camera Subsystem:
The lighting bulb, adjustable in terms of color temperature and brightness, receives instructions from the central control system. A camera is positioned near the bulb for better target tracking. Captured information is sent to the central controller.
## Central Control Subsystem:
This system integrates the ESP32 module and necessary I/O modules. It needs to process images captured by the camera, determine how much each motor in the mechanical arm should move to track the bulb and be sensitive to specific gestures to adjust various parameters of the bulb. It can also communicate remotely with a computer to control specific programs.

# **Standard of Success**
When tracking mode is activated, the bulb moves to an appropriate position following the hand's movement.

As the ambient light changes, the bulb adjusts to the appropriate brightness and color temperature.

The lamp's switch and brightness can be adjusted through gestures.

Specific programs (like Spotify) can be opened on the computer through hand gestures.

Covert Communication Device

Ahmad Abuisneineh, Srivardhan Sajja, Braeden Smith

Covert Communication Device

Featured Project

**Partners (seeking one additional partner)**: Braeden Smith (braeden2), Srivardhan Sajja (sajja3)

**Problem**: We imagine this product would have a primary use in military/law enforcement application -- especially in dangerous, high risk missions. During a house raid or other sensitive mission, maintaining a quiet profile and also having good situational awareness is essential. That mean's that normal two way radios can't work. And alternatives, like in-ear radios act as outside->in communication only and also reduce the ability to hear your surroundings.

**Solution**: We would provide a series of small pocketable devices with long battery that would use LoRa radios to provide a range of 1-5 miles. They would be rechargeable and have a single recessed soft-touch button that would allow someone to find it inside of pockets and tap it easily. The taps would be sent in real-time to all other devices, where they would be translated into silent but noticeable vibrations. (Every device can obviously TX/RX).

Essentially a team could use a set of predetermined signals or even morse code, to quickly and without loss of situational awareness communicate movements/instructions to others who are not within line-of-sight.

The following we would not consider part of the basic requirements for success, but additional goals if we are ahead of schedule:

We could also imagine a base-station which would allow someone using a computer to type simple text that would be sent out as morse code or other predetermined patterns. Additionally this base station would be able to record and monitor the traffic over the LoRa channels (including sender).

**Solutions Components**:

- **Charging and power systems**: the device would have a single USB-C/Microusb port that would connect to charging circuitry for the small Lithium-ion battery (150-500mAh). This USB port would also connect to the MCU. The subsystem would also be responsible to dropping the lion (3.7-4.2V to a stable 3.3V logic level). and providing power to the vibration motor.

- **RF Communications**: we would rely on externally produced RF transceivers that we would integrate into our PCB -- DLP-RFS1280, https://www.sparkfun.com/products/16871, https://www.adafruit.com/product/3073, .

-**Vibration**: We would have to research and source durable quiet, vibration motors that might even be adjustable in intensity

- **MCU**: We are likely to use the STM32 series of MCU's. We need it to communicate with the transceiver (probably SPI) and also control the vibration motor (by driving some transistor). The packets that we send would need to be encrypted (probably with AES). We would also need it to communicate to a host computer for programming via the same port.

- **Structural**: For this prototype, we'd imagine that a simple 3d printed case would be appropriate. We'd have to design something small and relatively ergonomic. We would have a single recessed location for the soft-touch button, that'd be easy to find by feel.

**Basic criterion for success:** We have at least two wireless devices that can reliably and quickly transfer button-presses to vibrations on the other device. It should operate at at *least* 1km LOS. It should be programmable + chargeable via USB. It should also be relatively compact in size and quiet to use.

**Additional Success Criterion:** we would have a separate, 3rd device that can stay permanently connected to a computer. It would provide some software that would be able to send and receive from the LoRa radio, especially ASCII -> morse code.