Monday, March 9, 2020

Workday 3.9.2020


Date: 3.9.20
Location: Logan High School
Time: 12:00-2:00 PM
Goals: AMP chip circuit design, continue working on the sensor/circuit board housing design.
Students: Tommy, Abie, Clara, Rebecca, Sam, Ella

We continued working on the housing for the sensors and circuit boards today with plans to 3D print the design. Abie and Rebecca are looking at a design where the circuit board slides into the housing. Hose and wires will be routed out on opposite sides of the enclosure.

Clara, Ella and Tommy  began working on the circuit and design for the AMP Chip (LMV 321). The purpose of this circuitry is to boost the signal so the software can better define its resolution. This process included soldering 5 small wires together onto the chip. It was a very long and tedious task because everything is very small. We decided to order a bread board to hold the chip in place that will make the surface mount process easier. We will order a surface mount board for next week to speed this up. It is taking too long to solder the surface mount chips.

On the software side of things, Sam started working on getting an output to an app which he was successful in doing on a small scale. Now he needs it to be displayed in a graphically pleasing form on the App.

Next week we will work on getting some readings with the sensors in a pack and getting some pressure on them. We will also try out the 3d printed housings.

Tommy working on Multisim for the AMP circuit design.

Abie and Rebecca working on designing the circuitry housing.

Clara learning to solder surface mount.

Some fine soldering work.


Tuesday, March 3, 2020

Workday 3.3.2020


Date: 3.3.20
Location: Logan High School
Time: 10:00-12:00
Goals: Work more on designing sensor housing, connect the software up to the sensors on the bladder
Students: Tommy, Abie, Sam, Will, Ella

During this meeting we worked more on designing housing for the sensors and electronics as well as connecting the software up to the sensors. Once the software was connected, we once again put different amounts of water into the Camelbak and this time, we got the data through our software.

We also worked on finding an equation for the amplifier circuit that we will need to build. This may be neccessary to amplify and clean up the inputs that the Arduino receives. If so, it will have to be designed into the existing circuit board.

It was a fun day today and we got donuts!

Students conneting the pressure sensors to the software.

Sam demonstrating that the software is interfacing with the hardware sensors.

Mr. Foye and Ella working out the math equation for the amplifier circuit.