I have also decided to build from scratch. I have a interesting question. If I want to use a TQFP Atmel ATMega32 will the Hex files worked as is or will it be needed to re-compile for the new physical footprint?
Hello, I´m starting to build this stuff but I could´t find the original sensors, IDG300 and ADXL 320, so I got a finished board with IDG500 and ADXL335, from sparfun. Do you think that I have to tweak the software to have a good performance with these sensors ?
IDG500 should be totally equal if you set it to "500°/s full scale range (higher speed)"
For using the ADXL335 instead of ADXL320 you should better match the gain difference in the firmware for the 335 delivers 300mV/g vs. the 320 with its 175mV/g. With other words: your replacement is more sensitiv.
Well I'm back after an extended period of unemployment (therefore limited cash) and dubious health. I am currently debugging my PCB designs and particularly the sensor area as I am very new to surface mount and I find I am battling that at the moment. I have attached some pictures of the PCboards I have made. Hope to move on to mechanical assembly shortly.
Hi Gunter, I use 'Express PCB' software to design my boards and then submit them by email to be manufactured ... presto in 5 working days these beautifully manufactured PCB's arrive from the USA. http://www.expresspcb.com These boards are all 2 layer (although it is possible to do 4 layer boards) and all component holes are vias (I overlay a via hole onto smd pads). I use a groundplane on the top as ground and another one (sometimes more than one) on the bottom for + supplies. The boards I use are a special Miniboard' prototyping service and are manufactured in quantities of 3 (2.5"x3.8") boards for around US$51.00 plus postage. I have used this service for years and find that even my dodgiest prototypes look and perform great.