I'm sure if you peruse the archives, you'll see that I post about this about every year. The answer to your question is 'No, I haven't found what I am looking for yet.' However, the quest I am on is slightly different. I am looking for a device that meets the following criteria. a) Reasonably small. This probably wouldn't be rack mounted; it'd be wall mounted, desk mounted, celing mounted, etc. b) Powered by PoE. c) Is SNMPable over Ethernet. NOT RS232 or serial, or anything archaic like that. Not MODBUS. It's 2004, people. d) Provides Temperature and Humidity. e) Has 4 or so input contact sensors (connections to AC units, etc.) f) Has 4 or so output contact sensors. Help. -- Alex Rubenstein, AR97, K2AHR, alex@nac.net, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
On Thu, 2004-12-02 at 01:12 -0500, Alex Rubenstein wrote:
I'm sure if you peruse the archives, you'll see that I post about this about every year. The answer to your question is 'No, I haven't found what I am looking for yet.'
However, the quest I am on is slightly different.
I am looking for a device that meets the following criteria.
a) Reasonably small. This probably wouldn't be rack mounted; it'd be wall mounted, desk mounted, celing mounted, etc.
b) Powered by PoE.
c) Is SNMPable over Ethernet. NOT RS232 or serial, or anything archaic like that. Not MODBUS. It's 2004, people.
d) Provides Temperature and Humidity.
e) Has 4 or so input contact sensors (connections to AC units, etc.)
f) Has 4 or so output contact sensors.
I think what you are looking for is something like this: http://alexandria.paf.se/ietf-59/001598_G And folks: it does IPv6 *ONLY* and was, during that ietf reachable globally, so you could telnet into it ;) There is this large IPv6 toy setup somewhere in Japan and they seem to have all kinds of these devices and thus I think if you want one of these kind of toys you will have to look into that direction... Greets, Jeroen
I am looking for a device that meets the following criteria. a) Reasonably small. This probably wouldn't be rack mounted; it'd be wall mounted, desk mounted, celing mounted, etc. b) Powered by PoE. c) Is SNMPable over Ethernet. NOT RS232 or serial, or anything archaic like that. Not MODBUS. It's 2004, people. d) Provides Temperature and Humidity. e) Has 4 or so input contact sensors (connections to AC units, etc.) f) Has 4 or so output contact sensors.
Sorry Alex, but I think you are barking up the wrong tree. A cheap simple temperature and humidity sensor would be built around a PIC chip and would use a serial bus to communicate status. Since this is 2004 that would be an I2C serial bus, but in reality an RS-232 daisy chain would suit this application just fine. When you add Ethernet as a requirement then you are asking for an I/O interface that is more complex and more expensive than the basic temp/hum recorder on the PIC. However, it definitely is possible to do this and many people have done so. I suggest that you go to a company like http://www.edtp.com and tell them what you want and how many you would buy in the next year as well as an estimate of how many they could REALISTICALLY sell to other companies in 2005. When you look at the prices on his website, remember they are single unit hobbyist prices. I think that a PIC board built around his packet whacker Ethernet would do what you want and could easily be powered with PoE and be installed in a box with flexible mounting options. If you can't get what you want from this company, then start looking for people who do PIC development. You might even be able to get a college sophomore to design and manufacture these for you for some spare pocket money. The PIC code including TCP/IP stack, is readily available through googling. The only area where you might have to compromise is SNMP since I think most people who do this are trying to make PIC web servers. But it's simple to run a custom SNMP proxy on a server if you need to hook this into your management system. Please report back on what you find. I think a lot of people would be interested in this type of unit. --Michael Dillon
I don't know if they're here yet, but, PICs with builitin Ethernet are definitely on the way. I'm not that much of a hardware geek, but, some of the hardware geeks I know have bee talking about these for a while in terms that make me think they're expecting samples any day. Owen --On Thursday, December 2, 2004 11:42 AM +0000 Michael.Dillon@radianz.com wrote:
I am looking for a device that meets the following criteria. a) Reasonably small. This probably wouldn't be rack mounted; it'd be wall mounted, desk mounted, celing mounted, etc. b) Powered by PoE. c) Is SNMPable over Ethernet. NOT RS232 or serial, or anything archaic like that. Not MODBUS. It's 2004, people. d) Provides Temperature and Humidity. e) Has 4 or so input contact sensors (connections to AC units, etc.) f) Has 4 or so output contact sensors.
Sorry Alex, but I think you are barking up the wrong tree. A cheap simple temperature and humidity sensor would be built around a PIC chip and would use a serial bus to communicate status. Since this is 2004 that would be an I2C serial bus, but in reality an RS-232 daisy chain would suit this application just fine.
When you add Ethernet as a requirement then you are asking for an I/O interface that is more complex and more expensive than the basic temp/hum recorder on the PIC. However, it definitely is possible to do this and many people have done so.
I suggest that you go to a company like http://www.edtp.com and tell them what you want and how many you would buy in the next year as well as an estimate of how many they could REALISTICALLY sell to other companies in 2005. When you look at the prices on his website, remember they are single unit hobbyist prices. I think that a PIC board built around his packet whacker Ethernet would do what you want and could easily be powered with PoE and be installed in a box with flexible mounting options. If you can't get what you want from this company, then start looking for people who do PIC development.
You might even be able to get a college sophomore to design and manufacture these for you for some spare pocket money. The PIC code including TCP/IP stack, is readily available through googling. The only area where you might have to compromise is SNMP since I think most people who do this are trying to make PIC web servers. But it's simple to run a custom SNMP proxy on a server if you need to hook this into your management system.
Please report back on what you find. I think a lot of people would be interested in this type of unit.
--Michael Dillon
-- If it wasn't crypto-signed, it probably didn't come from me.
Michael.Dillon@radianz.com writes:
When you add Ethernet as a requirement then you are asking for an I/O interface that is more complex and more expensive than the basic temp/hum recorder on the PIC.
Or not. http://www.lantronix.com/device-networking/embedded-device-servers/xport.htm... (no, it doesn't support POE, but that's an easy hack fi you think about it). ---Rob
I was at a trade show yesterday and they had some interesting boxes for remote control. They don't meet your spec but someone might be interested. This box has serial and digital control connections but works via GPRS rather than Ethernet. Makes an interesting back door that could be independent of any other connections you have. http://www.atop.com.tw/e/product/SG6103.htm Roy Engehausen -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of Alex Rubenstein Sent: Wednesday, December 01, 2004 10:12 PM To: nanog@nanog.org Subject: My yearly post about environmental monitoring devices I'm sure if you peruse the archives, you'll see that I post about this about every year. The answer to your question is 'No, I haven't found what I am looking for yet.' However, the quest I am on is slightly different. I am looking for a device that meets the following criteria. a) Reasonably small. This probably wouldn't be rack mounted; it'd be wall mounted, desk mounted, celing mounted, etc. b) Powered by PoE. c) Is SNMPable over Ethernet. NOT RS232 or serial, or anything archaic like that. Not MODBUS. It's 2004, people. d) Provides Temperature and Humidity. e) Has 4 or so input contact sensors (connections to AC units, etc.) f) Has 4 or so output contact sensors. Help. -- Alex Rubenstein, AR97, K2AHR, alex@nac.net, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
participants (6)
-
Alex Rubenstein -
Jeroen Massar -
Michael.Dillon＠radianz.com -
Owen DeLong -
Robert E.Seastrom -
Roy