Wireless Environmental Sensor Project Scope

Other Hardware Home Automation
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Hello! I am potentially doing a project that involves multiple wireless environmental sensors relaying information to an Arduino which then relays to a laptop (testing feasibility in my bedroom first, but potentially using in a warehouse setting). I'm new to Arduino but not new to coding, and so I'm not sure the hardware required to make this work. The environmental parameters I'm aiming for include temperature, relative humidity, CO2, PM2.5, potentially VOC. What hardware would be most appropriate for a situation like this?

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I would use an esp32.

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agreed! ESP32 (about £7 in UK) are low cost and have onboard WiFi, Bluetooth Classic and BLE plus plenty of IO facilities for your sensors

a couple of questions

  1. does the area have a local WiFi?
  2. what distances are the sensors from each other and what is the environment, e.g. brick walls, metal walls, etc
  3. how will you power the devices?
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  1. Yes the area has local wifi
  2. There are two office rooms roughly 8x8' and 8x12' and an open warehouse with not too much stuff that's roughly 35x12' (these are very rough estimates, I hadn't been there in a while). I believe the walls between every room is drywall. I will most likely start with a single receiver and wireless sensor on the opposite ends of the warehouse and test its feasibility. The end result may be one receiver roughly in the middle of the warehouse and one receiver in one of the two rooms, and anywhere from 3 to 10 sensors based on my friend's needs
  3. Every room has ample wall plugs so I was hoping to get a usb brick and power via usb cord.
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if the area has local WiFi you can run a server with nodes transmitting data to it
if the server can connect to the internet you can access data remotely

get a couple of ESP32 modules and experiment

1 Like
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Only some versions have Bluetooth Classic. For example the S3 does not.
https://docs.espressif.com/projects/esp-idf/en/v5.0.7/esp32s3/hw-reference/chip-series-comparison.html

1 Like
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Thank you! That doc is noteworthy. I randomly tried two modules, and neither had Bluetooth.......

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the link to ESP32 in post 3 was to the version with Bluetooth 4.2 as well as BLE 5.0
another useful table is Comparison chips (SoCs) table for ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6

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