Interesting idea. I did something like this years ago (DOS days) when I had a remailer service. It would detect a PC lockup and would power down the PC and restart the PC through a relay in the AC line. I used an old PIC16C54 driving a relay thru the NC contacts. The PIC was "triggered" through an OPTO, the PC writing to a second parallel port. What memories. --Bob On Tue, Jun 2, 2009 at 10:15 PM, Carlos Marcano wrote: > Well, i don't know how did this happen but somehow I missed your > responses to my original post. > > In case anybody is interested, I have not completed this project (I > started but barely got some initial concepts and drawings on the > design board) but I have noticed something strange, at least for me, > on my LAN. Any computer that I connect to one of the four wired > gigabit ethernet ports of the DIR-655 draft-n wifi router, will > invariably stop downloading using utorrent at some random period of > time, stalling any internet acces through my network. But if utorrent > is used from one of my laptops, through the wifi connection, the > internet connection is never lost! > > I am a little bit frustrated because it is not a cheap router and it > is suposed to be a prime performer but I don't know if there is a > plaussible answer for this or I have a defective unit... > > Regards, > > *Carlos Marcano* > -Guri, Venezuela- > > 2009/3/4 Jake Anderson : >> The problem is more than likely the P2P application is filling up the >> connections table in the router. >> its a common problem with cheap routers, see if there is a firmware >> update available. >> Alternatly bridge the router and use a software firewall or pppeo client >> to get online. >> >> Carlos Marcano wrote: >>> Good day, people. >>> >>> I would like to ask for opinions regarding this matter. I am using an >>> AXESSTEL D800 1xEV-DO fixed cellular modem to access internet. It is >>> supposed to be a 1 Mbps downloading connection but most of the time it >>> underperforms like a 256 kbps one. =A0The modem/router (has a DHCP serv= er >>> running) is connected trough its 10/100 Mbps Ethernet port to a D-Link >>> DIR-655 draft-n wifi router (used as an acces point). My desktop is >>> connected via cable to one of the four gigabit Ethernet ports of the >>> DIR-655, leaving the wifi use just for the occasional connection of my >>> wife's laptop. >>> >>> Because of the lousy internet connection, whenever I need to download >>> ISO images of the Ubuntu OS new releases I use a p2p protocol >>> (bittorrent) to get them, with utorrent being the client used (when >>> under Windows XP) and Transmission if under Ubuntu. >>> >>> The thing is that in any of them the downloading works great for an >>> undetermined and variable period of time - sometime hours, sometime >>> minutes - and then the connection stalls. No p2p, no web browsing. The >>> modem seems to be connected to the ISP but no data moves around. I try >>> to soft reset both modem and wifi router but no luck. I then try to hard >>> reset, no luck either. Only way to get back in business is to unplug >>> both of the devices, wait a few seconds, replug them and voila!... works >>> again. >>> >>> This behaviour is very frustrating because sometimes I have left the >>> download alive and kicking nicely (120 - 150 kbps, which is very good >>> for my connection) with an ETA of 30 minutes and when I come back half >>> an hour later I have found that the download stalled the second I left >>> the room and only downloaded 10 percent of the iso and the connection is >>> in the "zombie" status. >>> >>> As I have not found a solution for this problem, I think I will need to >>> implement a brute force approach, I would need to develop a software - >>> hardware solution: >>> >>> Software: =A0An always running process which in some way monitors de >>> downloading speed and if it falls below certain level then it will... >>> (see below) >>> >>> Hardware: ... trigger a device that would turn off, wait and turn on the >>> modem and the wifi router. >>> >>> At first sight this looks like over killing but I am out of better >>> ideas. My questions would be: >>> >>> A) =A0 =A0 =A0Is this a bad idea? >>> >>> B) =A0 =A0 =A0If not, should I use USB ports to connect to the external >>> device? My desktop has a parallel port and it would be easier to >>> interface to the device this way - done it before - but I am planning on >>> upgrading my box so there is no guarantee I will have that port later. >>> >>> C) =A0 =A0 =A0Should I use a micro controller? I guess that if I am goi= ng to >>> use the USB ports I would need to use a micro. >>> >>> D) =A0 =A0 =A0If yes, which one would you recommend? I have done some p= ic >>> programming before (assembler), mostly in 16F parts. >>> >>> Sorry for the lengthy post, I hope I made myself clear and thanks in >>> advance for your help and ideas. >>> >>> Regards, >>> >>> *Carlos Marcano* >>> - Guri, Venezuela - >>> >> >> -- >> http://www.piclist.com PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist