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Discussion Title Created date
Where to buy electromagnet
Any quick advises for online stores that sell electromagnet in Canada (or US)? I need a small and light electromagnet capable of lifting reliably a 9V battery (force of 1-2 pounds...
Thu. Nov 8, 2012 - 02:05 AM
Overhead for interrupts context switching
Hello guys, What is the approximate total overhead in terms of clock cycles for context switch to and from an (external) interrupt? In other words, if thread A is running, when it...
Fri. Nov 2, 2012 - 01:54 AM
Bluetooth reliability & Bitrate for SPP service
tl;dr: How to improve bluetooth reliability / stability? Hello, I'm using an RN-42 bluetooth module for transmitting sensor data to the computer. I am currently transmitting data...
Wed. Apr 4, 2012 - 01:56 AM
Genius g540 programmer new drivers?
I've bought the genius g540 programmer on ebay a while ago, and I used it to program mostly atmega168 devices. Now I am working on a project with the atmega164. I've bought the 40...
Sat. Mar 10, 2012 - 09:59 PM
How to choose a soldering torch
The topic is pretty self explanatory. I've started soldering surface mount parts recently and had to borrow a soldering torch from a friend. I want to buy my own and looking for...
Fri. Feb 17, 2012 - 07:44 PM
Getting Standard Deviation from Noise Density
Hello, I've seen in a bunch of datasheets a spectral noise density figure, expressed in Units/sqrt(Hz). In my case, I'm trying to assess the measurement error in an accelerometer...
Fri. Feb 17, 2012 - 06:37 PM
Constant calculations not computed
I was very surprised to discover the following about avr-gcc: when I put something like: y = x * (1600 / 100); I expected the compiler to reduce it to: y = x * 16; But it...
Fri. Nov 25, 2011 - 03:15 AM
Bluetooth (RN-42) + Windows 7
Hello! I've recently bought a RN-42 bluetooth module, hoping to use it to communicate with my avr wirelessly. Now, I've tried all sorts of things and I cannot make windows 7...
Thu. Nov 24, 2011 - 10:53 PM
Printf and serial library
Hello everyone! I realize, this might have been discussed a lot of times but a quick search didn't answer the questions I had. Basically, what I want to do is to implement a...
Thu. Nov 17, 2011 - 05:15 AM
Inertial Mocap & AVR chip with two I2C modules
Hello all, [TL;DR] I am making an inertial motion capture system and I might need a chip with 2 separate i2c interfaces. Is there any chips like the atmega168 with 2 i2c modules,...
Thu. Nov 3, 2011 - 03:11 AM
Zener Diode 1N746A problems
Hello guys, I've recently bought a bunch of 3.3V zener diodes to protect my accelerometer inputs from an accidental surcharge (I use a 5v arduino for testing it). However upon...
Sun. Oct 30, 2011 - 02:12 AM
Having my code "optimized away"
Disclaimer: I have already read some topics about optimization on these forums, but didn't find what I looked for. Hello, I've been writing some code related to strings and it...
Sun. Sep 12, 2010 - 07:29 PM

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