This was my second Pi project and is currently in it's 4th evolution.
Originally I wanted to control a fan that turned on when it was hot inside. The fan should only operate when hotter than 22 degrees inside, temperature outside colder than in inside by at least 2 degrees.
Using the excellent guides from Adafruit this project has grown from 2 temperature sensors to about 30.
Originally I used an 8 way relay board connected to conventional wireless plug sockets. Now use another Pi connected to Energie Power Plugs
Also runs Adblocking DNS Server
Also also has a 128gb USB memory stick attached used for remote backups
- Model B+
- 512mb ram
- Raspbian
- DS2482-800 8 Channel I2C to 1-Wire Master IC
- 2 x DHT11 Humidity sensors - one inside mounted to the case, and one outside
- 2 x DS18B20 1-WIRE Digital Thermometer - one inside the case and one mounted on the outside
- Multiple DS18B20 1-WIRE Digital Thermometer Waterproof Probes
- Light Dependant Resistor
- BMP085 1-Wire Barometric Pressure Sensor
- Integral 128gb usb memory stick
| SONOFF DS18B20 Waterproof Temperature Sensor APP Free for SONOFF TH10 TH16 D0G3 | |
 |
$7.09 End Date: Saturday Nov-2-2019 14:34:24 PDT Buy It Now for only: $7.09 |
| 1X Waterproof DS18B20 Digital Thermal Probe Sensor Temperature Sensor 100cmTC | |
 |
$5.76 End Date: Sunday Nov-3-2019 9:28:10 PST Buy It Now for only: $5.76 |
| DALLAS 18B20 DS18B20 TO 92 IC Digital Thermometer Temperature Sensor USA Ship | |
 |
$1.40 End Date: Tuesday Oct-22-2019 18:13:49 PDT Buy It Now for only: $1.40 |
| DS18B20 Waterproof Digital Temperature Sensor With Adapter Module for Arduino HM | |
 |
$3.19 End Date: Tuesday Nov-5-2019 0:50:09 PST Buy It Now for only: $3.19 |
| 2pcs DS18B20 1M Waterproof Digital Temp Sensor thermal probe for Arduino | |
 |
$7.00 End Date: Monday Oct-21-2019 16:29:42 PDT Buy It Now for only: $7.00 |
| 10PCS DALLAS DS18B20 18B20 TO 92 Thermometer Temperature Sensor | |
 |
$5.22 End Date: Saturday Nov-9-2019 10:48:24 PST Buy It Now for only: $5.22 |
| 5x DS18B20 Digitaler Temperaturfhler Temperatursensor 1 wire Raspberry Arduino | |
 |
$6.61 End Date: Thursday Nov-7-2019 4:52:48 PST Buy It Now for only: $6.61 |
| DALLAS 18B20 DS18B20 TO 92 Wire Digital Thermometer Temperature IC Sensor TWAA | |
 |
$3.85 End Date: Monday Nov-11-2019 8:13:14 PST Buy It Now for only: $3.85 |
| DALLAS 18B20 DS18B20 TO 92 Wire Digital Thermometer Temperature IC Sensor TWIJ | |
 |
$4.51 End Date: Thursday Nov-7-2019 3:52:09 PST Buy It Now for only: $4.51 |
| SONOFF DS18B20 Waterproof Temperature Probe TH10 16 Temperature Wireless Monitor | |
 |
$3.29 End Date: Saturday Nov-16-2019 12:30:18 PST Buy It Now for only: $3.29 |