qprimed

thanks for the reply and the heads up! going to order some gear today and play when it gets here. will update the thread as things progress.

So poking around, here is what I have been thinking about.

Multi-sensor - cabled

• Adafruit Feather RP2040 Adalogger (RP2040, STEMMA QT, microSD, LiPo connector, USB-C)
• Adafruit PCA9546 4-Channel STEMMA QT I2C Multiplexer (4 downstream STEMMA QT ports)
• Adafruit SHT40 Temp/Humidity Breakout (STEMMA QT, ±0.2°C / ±1.8% RH)

Single sensor - direct attached

• Adafruit SHT45 Trinkey (USB Temp and Humidity Sensor with PTFE)

or

• Adafruit SHT41 Trinkey (USB Temperature and Humidity Sensor)

available libraries should make coding this up fairly straightforward. I have not worked with adafruit h/w before, but definitely interested I doing so.