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Need help with tcpreplay? Read this!Posted by Synfinatic on April 9, 2012 at 11:02 am in tcpreplay.I’ve noticed a certain pattern come up more and more recently and so I’d just like to make a public statement about asking for help with using tcpreplay: Occasionally people are testing some kind of top secret device with tcpreplay and can’t tell me how it works or what it does or share their pcap file (because it has some kind of exploit or something like that I guess), but expect me to help them figure out why it can’t “see” the traffic tcpreplay sends. That’s a lot like asking your car mechanic to fix your car, but you won’t let them look at it because you’ve modified the engine to run on tap water and don’t want the … Tags: help, NDA, support, tcpreplay, top secret
Calibrating Thermistors for the ArduinoPosted by Synfinatic on January 18, 2012 at 7:10 pm in Arduino.This is my first post about my current geek project: building a wireless thermometer/alarm/data logger for my Weber smoker. Until now, I’ve been using a Maverick/RediCheck wireless unit which is merely OK. The wireless signal tends to be really flaky and it has only one temp probe. There are multi-probe units available, they’re still missing other features I’d be interested in such as logging the data for generating graphs, measuring ambient temperature outside and setting multiple alarms (for both the food and smoker temperature too high/low). For my food and smoker temp measuring needs, I picked up 3 food safe probes from Thermoworks for $8/ea. Unfortunately, the probes come with no technical documentation and my email to the company requesting information was ignored. Contrary to my initial thoughts, these probes are not the same as those sold by Maverick or Amwei. I was however able to determine they are NTC thermistors and some searches turned up a way to convert the resistor readings into actual temperatures. Tags: arudino, Steinhart-Hart Equation, thermistor, thermoworks
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