Week 2

Welcome back!

Some parts arrived! We were able to get our hands on the Atlas Scientific sensors as well as the EZO interface boards.

Conductivity Sensor and EZO Interface Board:

Since the sensor itself has an analog output, these interface boards have an ADC on them as well I2C implementation. In theory, we should be able to access the registers on this board to read and write data to/from the sensor.

We also were able to get components put on to our PCB and do some testing.

Populated PCB:

Unfortunately, our boards are not behaving! We are having issues with programming the board to even test the antennas functionality. Looks like we will be doing a redesign and hope that the next revision works. In the meantime, we can at least do our firmware development on the PSoC 4 development board.

Relay Switch:

Since we are still waiting on some parts, we took some time this week to develop a tentative design for our relay switch enclosure using Fusion 360. We will most likely end up 3D printing this enclosure. The board itself is still being worked on and will depend on our final circuit design once prototyping and testing is completed.

Relay Switch Enclosure Design:

Next Week:

By next week, most of our parts should have arrived and we can spend some time working on the firmware as well as getting our relay switch circuit finished. We hope to have a working relay switch circuit as well as some basic I2C functionality. Hopefully, we will also get our PCB redesign finished so we can send it out for fabrication. Stay tuned!