Having worked in the electronics industry for 30+ years I have had my fair share of problems making the change to surface mount technology (SMT). As a hobbyist I thought of SMT soldering as a new source of hair loss.…
iMX23 Linux
I have been looking to design an open source Linux design that could be built at home. The problem so far has been that the processors supporting Linux tend to be manufactured in BGA packages which makes them difficult to…
Packaging the ATMega128RFA1 Radio
I am exploring the capabilities of 3D printing and am always looking for an excuse to make some new object. After designing the AVRRF radio board I thought wouldn’t it be cool if I could build a small package to…
Wireless Zigbee Radio
As part of the quadracopter telemetry system I want to be able to wirelessly send flight data back to the ground station. The obvious choice would be some sort of wireless module however this solution cannot be integrated as tightly…
IMU Sensor Board
The sensor board provides a 3.3V 6DOF sensor system which includes an accelerometer and gyroscope. The physical sensors are the L3G4200D gyroscope and MMA7455L accelerometer which are described in detail in the associated datasheets. This board also terminates the radio…
New quadracopter hardware
I have re-designed the hardware for the quadracopter, moving from the LPCExpresso board to a smaller purpose built board. The LPC1769 is designed to run on one PCB and controls all of the sensors located on a single daughter board.…