Hi Am 25.08.2016 um 18:31 schrieb Nicolas Boullis: > Hi, > > Sorry if my question is off-topic for this list. > > I have a computer that experienced a kernel failure while a was far away > and nobody could reboot it. So I thought it would be nice to have a > watchdog. Unfortunately, to the best of my knowledge, it has no hardware > watchdog, so I thought I should add one. > > Hence, do you have suggestions for I²C-, serial- or USB-connected > watchdog add-ons? It should of course be compatible with linux. > > I found > http://www.berkprod.com/Product_Web_Pages/usb_v1_pc_watchdog.aspx > but I think it is a little too expensive. > > If no such thing exists, I might consider designing my own (open > hardware) I²C- or USB-connected watchdog add-on, using a cheap MCU. But > then I would welcome opinions on what the interface between the host and > watchdog should look like. How about SPI? If yes, you can try this project: https://plus.google.com/102032716864870215256/posts/PwMMKYP5PKR https://plus.google.com/102032716864870215256/posts/QJqPxSi1Str Linux side is configured as watchdog, MCU side currently do only demo blinking, but watchdog should be a main future. -- Regards, Oleksij
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