LabMonitor

UROP with Prof. Joe Steinmeyer to bring out a low cost and small footprint system to monitor environmental data within a laboratory setting.

Getting Started

For this project, we are using the ESP32 (https://www.espressif.com/en/products/hardware/esp32/overview), the BME680 environmental sensor (https://cdn-shop.adafruit.com/product-files/3660/BME680.pdf), as well as a customized PCB for a minimal barebones setup. The ESP32 and BME680 are interfaced using I2C.

Setup (WITHOUT PCB)

Materials

• ESP32-DevKitC (https://www.espressif.com/en/products/hardware/esp32-devkitc/overview)
• Adafruit BME680 (https://learn.adafruit.com/adafruit-bme680-humidity-temperature-barometic-pressure-voc-gas)
• Jumper cables
• USB to MicroUSB cable
• Breadboard

After installing the software listed below in the Software section to program the ESP32-DevKitC with Arduino, simply follow the hookup guide outlined in the Adafruit tutorial linked above in the materials list.

Materials

• ESP-Wroom-32 (https://www.espressif.com/en/products/hardware/esp-wroom-32/overview)
• BME680 (https://www.bosch-sensortec.com/bst/products/all_products/bme680)
• Sparkfun FTDI (https://www.sparkfun.com/products/9716)
• Customized PCB
• 2 Buttons (Reset and Prgm)
• Wires
• Breadboard

After installing the software listed below in the Software section to program the ESP-Wroom-32, (

Notes

• Use 3.3V on the FTDI so cut the 5V connection and solder the 3.3V connection
• To program the ESP-Wroom-32, press Reset, press Prgm, release Reset, and release Prgm and upload the sketch
• When using wifi, the FTDI driver cannot supply enough current, so power using batteries or a lab supply

Software

Programming the ESP32 with Arduino https://github.com/espressif/arduino-esp32

BME680 Driver https://github.com/BoschSensortec/BME680_driver

KiCad (If customizing PCB) http://kicad-pcb.org/

References

http://esp32.net/ https://www.espressif.com/sites/default/files/documentation/esp32_hardware_design_guidelines_en.pdf https://www.espressif.com/sites/default/files/documentation/esp-wroom-32_datasheet_en.pdf https://3.bp.blogspot.com/-zyGHuqISKPs/WMx4MWPAZOI/AAAAAAAAAMw/xxDcpwVSq0garkCG5n8yQfn4X7r94zMHACLcB/s1600/ESP%2B32%2BSchematic.PNG https://cdn-shop.adafruit.com/product-files/3660/BME680.pdf https://learn.adafruit.com/adafruit-bme680-humidity-temperature-barometic-pressure-voc-gas/arduino-wiring-test https://www.14core.com/wiring-and-flashing-programming-esp-32-esp32s-with-usb-ttl-uart/ https://github.com/sparkfun/SparkFun-KiCad-Libraries https://www.wayneandlayne.com/blog/2013/02/27/kicad-tutorial-gerber-file-generation/ https://techtutorialsx.com/2017/04/24/esp32-publishing-messages-to-mqtt-topic/