Node Assassin - Original: Difference between revisions
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This device will be based on the [http://arduino.cc/ Arduino] [http://arduino.cc/en/Main/ArduinoBoardDuemilanove Duemilanove] using the [http://arduino.cc/en/Main/ArduinoEthernetShield Ethernet Shield] for communication. | This device will be based on the [http://arduino.cc/ Arduino] [http://arduino.cc/en/Main/ArduinoBoardDuemilanove Duemilanove] using the [http://arduino.cc/en/Main/ArduinoEthernetShield Ethernet Shield] for communication. | ||
I'll need to run the outputs of from the arduino through relays to keep the different grounds isolated. Possible candidates: | I'll need to run the outputs of from the arduino through relays to keep the different grounds isolated. The arduino's digital lines can read or write 5Vdc up to 40mA. Possible candidates: | ||
* [http://search.digikey.com/scripts/dksearch/dksus.dll?Detail&name=Z123-ND Z123-ND] | * [http://search.digikey.com/scripts/dksearch/dksus.dll?Detail&name=Z123-ND Z123-ND] - Std. Coil, 40mA, 5VDC | ||
* [http://search.digikey.com/scripts/dksearch/dksus.dll?Keywords=Z1232-ND | * [http://search.digikey.com/scripts/dksearch/dksus.dll?Keywords=Z1232-ND Z1232-ND] - Std. Coil, 36mA, 5VDC | ||
* [http://search.digikey.com/scripts/dksearch/dksus.dll?Cat=1049448&k=2N3904 2N3904] | * [http://search.digikey.com/scripts/dksearch/dksus.dll?Cat=1049448&k=2N3904 2N3904] - Latching, Single Coil, 11.7mA, 3VDC | ||
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Revision as of 03:16, 12 January 2010
|
Node Assassin :: Node Assassin - Original |
Node Assassin is an open-source, open-hardware project to create a network-attached cluster fence device.
It's really just an idea at this point. At this time, nothing below should be considered valid, functional or likely even sane.
As always, proceed at your own risk. :)
Concept
The goal of this device is to provide a network-addressable device that can be signalled to press and home one or more node's reset switches. This device will then have a wrapper to plug into cluster management software like Red Hat's 'ricci' and 'luci' programs. This should then provide an inexpensive, scallable fence device.
Hardware
This device will be based on the Arduino Duemilanove using the Ethernet Shield for communication.
I'll need to run the outputs of from the arduino through relays to keep the different grounds isolated. The arduino's digital lines can read or write 5Vdc up to 40mA. Possible candidates:
- Z123-ND - Std. Coil, 40mA, 5VDC
- Z1232-ND - Std. Coil, 36mA, 5VDC
- 2N3904 - Latching, Single Coil, 11.7mA, 3VDC
| Input, advice, complaints and meanderings all welcome! | ||||
| Digimer | digimer@alteeve.ca | https://alteeve.ca/w | legal stuff: | |
| All info is provided "As-Is". Do not use anything here unless you are willing and able to take resposibility for your own actions. © 1997-2013 | ||||
| Naming credits go to Christopher Olah! | ||||
| In memory of Kettle, Tonia, Josh, Leah and Harvey. In special memory of Hannah, Jack and Riley. | ||||