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Monthly Archives: December 2011

RFM12B bit stream sync issue

22/12/2011 – 16:04

Been working with cheap RFM12B modules at work and discovered something interesting about them. A couple of things actually, the first of which is that the datasheet for the Si4420 IC it uses is much better. The main issue is that the serial data stream you get when receiving is not always aligned to the [...]

By mojo | Posted in avr, electronics | Comments (0)

Compile time asserts in C

21/12/2011 – 15:48

Assert is a useful function that checks a condition and outputs an error if it is not met at run time. Aside from generating some overhead in the code it is also pretty useless on microcontrollers because the messages go to STDERR and, well, there isn’t one. A much better solution is to do the [...]

By mojo | Posted in avr | Comments (0)

Scheduling uTorrent on Windows

03/12/2011 – 19:12

Sometimes I close uTorrent and forget to open it again before going to bed for overnight downloading. It cannot be scheduled via the Task Scheduler in Vista/Server 2008 and above because scheduled tasks can no longer display a GUI. This is a security feature designed to prevent shatter attacks which are a form of privilege [...]

By mojo | Posted in windows | Comments (0)
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