Wednesday, 12 October 2016
Saturday, 8 October 2016
9-axis means it can measure each of acceleration, gyro and magnetic field values in 3 axes, which is very useful if your drone needs to know about its own motion.
Sunday, 14 August 2016
Sunday, 10 July 2016
I downloaded a new version of eclipseArduino (Arduino development within Eclipse). After unpacking and moving to /Applications, I get the message
"eclipseArduino" is damaged and can't be opened. You should move it to the Trash.
After a lot of poking around, I found this:
- Open Gatekeeper settings located in System Preferences > Security & Privacy.
- Set Allow applications downloaded from: to Anywhere and confirm by pressing Allow From Anywhere.
- Run the application.
- Once the application has been successfully launched, it no longer goes through Gatekeeper; so, restore Gatekeeper settings to the default option Mac App Store and identified developers after successfully launching the application.
Sunday, 17 April 2016
I seem to have fritzed one or two of the pins on my STM32F429I-DISC0 board (now replaced by an updated version, STM32F429I-DISC1; that last character was a 0!); after some hair-pulling it turns out that one of said pins is used by the only externally-accessible I2C peripheral on the board; so, until the replacement arrives, here are some interesting facts about the PCF8547A.
Saturday, 12 March 2016
Wednesday, 17 February 2016
Saturday, 30 January 2016
A watchdog is used to detect when a system has gone off with the fairies; you have to reset the watchdog timer ("pat the watchdog") every so often or it takes some recovery action. In the case of the Arduino Due, with the ATSAM3X8E MCU, the recovery action is to reset the CPU.
In the ATSAM3X8E (and probably other Atmel MCUs, too), the
watchdog timeout defaults to 16 seconds, and the default hardware
state is that the watchdog is enabled! (the default in
the Atmel Software Framework is
to disable the watchdog unless you have