1-Wire Humidity and Temperature sensor is a low-cost Open Source device for measuring temperature and relative air humidity in 1-Wire micro LAN network. 1-Wire network allows multiple devices connected on the same bus in parallel. Every 1-Wire device has a unique 64bit ID.

Features

• 1-Wire device: Maxim DS2438Z+ ADC with internal 13-bit temperature sensor
• Humidity sensor: HIH-5030 or HIH-5031 (condensation-resistant)
• Supply voltage: 2,7-5,5V DC
• Conformal coating option adds some additional protection against moist air
• Wiring on the full set model with the RJ12 plug (compatible with Maxim DS9490R USB to 1-Wire adapter):
  1 – VCC (yellow)
  2 – NC
  3 – OW 1-Wire data (green or blue)
  4 – GND (red)
  5 – NC
  6 – NC (black or none)

Resources

• Design files on GitHub
• Arduino library for DS2438 by jbechter
• OWFS 1-Wire File System
• Digitemp

Buy

• Bare PCB: 3€ 

• Pre-assembled: 48€

• Full set: 53€ 

• Conformally coated full set 56€ 

NB! The price of main parts has increased significantly due to the chip shortage. Our prices are adjusted accordingly.