Onsite Weather Logger/Propeller
(OWL3pro)
- Parallax "Propeller" microcontroller
- 32 bit, 8 core
- capable of mulitple simultaneous threads for sensor and communications interface and data processing
- multiple clock speeds, 80Mhz for high speed down to 20kHz
- 20µA for long battery life
- 64kbyte eeprom program and data memory.
- serial programming and debugging
- library programming objects, see obex.parallax.com
- 8 channel, 16 bit analog to digital converters
- suitable for thermocouples or other low level measurements.
- single ended or differential down to 0.256V up to 3.3V full scale.
- on-board reference temperature sensor.
- 8 channels single ended, 4 differential, or combination of the two.
- 5ppm temperature compensated real time clock
- battery backed scratchpad for memory and alarms
- 3.3V power
- also switched power for external sensors and SD card
- 1st level I/0 protection
- General purpose input/output interface from microcontroller
- I/O protected by 220 ohm resistors from miswiring and short circuit.
- 2RS232 system interface
- just like a standard Propellor, addressed as P30 and P31
- also used as programming port, just like any other Propellor.
- Built-in attention capacitor.
- Real time clock with embedded crystal
- ISL12020M keeps accurate time from seconds to years
- ± 5ppm accuracy
- lithium cell backup, included, keeps clock running for 10 years even when the main power is disconnected, automatic power switching.
- On board temperature measurement can be used for software error correction.
Main OWL3pro accessories
- standard SD card via stacking circuit board.
- on board socket for XBee wireless.
- breakout terminals and headers.
- i2c LCD screen and button module.
- enclosure and mouting options.
- Li-ion battery and charger
- apllication programming