DRAFT

USB thermometer sensor - UDS18B20™

Model UDS18B20a.

Estimated retail price 2013: € 25.00 (aprx $ 30.00)

No driver needs to be installed as the generic serial (RS-232) communication driver is used
Interfacing & applications:
- Linux (cdc_acm) & FreeBSD(debian)
  - Serial terminal: cu, screen, Minicom, cutecom, GtkTerm, moserial, Putty
  - OpenOffice spread sheet
  - Google spread sheet
  - Nagios, Icinga, Munin, Mrtg
  - Perl
  - bash monitor: tail -f /dev/ttyACM0
  - bash log: tail -f /dev/ttyACM0 > my.tsv
  - bash monitor & log: stdbuf -oL tail -f /dev/ttyACM0 | tee my.tsv
  - OpenWRT
- Microsoft Windows (usbser)
  - Serial terminal, HyberTerminal, Putty, cutecom
  - Microsoft Excel, VBA RS232
  - DOS: C:\> COPY COM1: CON
- Apple Mac
  - Serial terminal: cu, Minicom, cutecom, moserial, Putty
DS18B20 Dallas/Maxim 1-Wire Digital Thermometer
- Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
- ±0.5°C Accuracy from -10°C to +85°C
- Resolution rate: 0.0625°C
Response/sampling time 750ms (12bit resolution)
Waterproof stainless steel tip
PC powerede
Able to read multiple sensors
User formatted output
Celsius, Fahrenheit & Kelvin
GPL open source firmware
- Arduino libraries (OneWire)
- LUFA USB interface
- DFU, AVRDude & FLIP upload/download compatible
- Easy to open USB enclosure
- Open for user modifications. Download firmware source and change
Hardware design with Atmel ATMEGA32U2
- inspired by USB Serial Light Adapter, AdaFruit Teensy, SparkFun Pro Micro DEV-11098 & USB2AX
- 32 KB Flash ROM
- 1024 bytes RAM
- 512 bytes EEPROM
- 12 Mbit/s USB
- 16 MHz

Output sample

10.726	1c:23:02:02:30:00:c6	21.35
11.459	1c:23:02:02:30:00:c6	21.34

USB VendorID:ProductID: 0x1d50:0x601d UDS18B20 USB Temperature Sensor

Contact developer: Hans Schou