Difference between revisions of "Temperature Interface"
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You should also read the [[General_SPI_protocol]] notes. |
You should also read the [[General_SPI_protocol]] notes. |
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For arduino, a sample PDE is available, called ardemo_lcd.pde, also at [http://www.bitwizard.nl/software |
For arduino, a sample PDE is available, called ardemo_lcd.pde, also at [http://www.bitwizard.nl/software the BitWizard software download directory] .<br> |
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This is a demo to send things using SPI to the lcd board. The SPI routines there are applicable for the DIO, 3FETS and 7FETS boards as well.<br> |
This is a demo to send things using SPI to the lcd board. The SPI routines there are applicable for the DIO, 3FETS and 7FETS boards as well.<br> |
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Revision as of 13:56, 17 July 2012
This is the documentation page for the SPI_temp and I2C_temp boards.
Overview
Assembly instructions
Possible Configurations
Option 1: cheap, simple, positive only LM35.
- Install solder jumper
- don't install diode, capacitor, resistors.
Option 2: LM35 with negative temperatures.
- install diode,
- install pullup resistor? 50k
- install pulldown resistor 15k.
- Optional capacitor 100n.
- do not install solder jumper.
Option 3: thermocouple.
- install diode,
- install pullup.
- do not install pulldown.
- do not install solder jumper.
Diodes: PNB7000 or BAS31S or BAV99. should all work. Others should work too. The idea is that at 0.1mA forward current the voltage drop is about 1V.
External resources
Datasheets
Additional software
Related projects
Pinout
LEDs
Jumper settings
Protocol
For the intro to the SPI and I2C protocols read: SPI versus I2C protocols
The board specific protocol can be found here: DIO_protocol
You should also read the General_SPI_protocol notes.
For arduino, a sample PDE is available, called ardemo_lcd.pde, also at the BitWizard software download directory .
This is a demo to send things using SPI to the lcd board. The SPI routines there are applicable for the DIO, 3FETS and 7FETS boards as well.
The software
Default operation
Future hardware enhancements
Future software enhancements
Changelog
1.0
- Initial public release