Jérôme » University semester project – S5 – wireless accelerometer

University semester project – S5 – wireless accelerometer

By Jerome, June 11, 2010 3:15 pm

Last day I was surfing hackaday and read this nice post on laser cut and printable casing.
I really liked Riley Porter laser cut frame.

Here is a exmample of his work.

After seen the hackaday post I realise that I also use the laser cutter for the casing of my school project I did last semester with my team. Mine is different so I decided to write this post to share my ideas.

This page will talk about my school project and will go in details about specific parts of it:

• How to assemble surface mount component with solderpaste and oven.
• Mistake we made during the project and how we will correct them next semester.
• The schematic and PCB explanation.
• How to make a laser engrave case for you project.

Last semester, we learn about embedded system  (my favorite topic), we learn Microchip PIC, Texas Instrument DSP, digital filters, all the basic I2C, SPI, serial, ADC, etc. The project we had to build had to have a DSP that communicated with a PIC. The remote (PIC)  had to be battery powered and had to have a LCD. The PIC was programmed in assembly and the DSP in C. Our team decided to build a sport accelerometer. That idea came from one of the University coach that teach pole vaulting. He told us, that he needs a device to tell him and the athlete there mistake when they run.

You see, when the athlete runs and gets ready to set the pole in the notch in the floor, they  slow down when they approach the hole. Technically, you never slow down, you need to calculate every single step and be dead on when you insert the pole in the notch. Beginner will tend to slow down there pace, by making smaller steps towards the end to be synchronise when the pole reach the hole. That is big NO NO.

So the coach wanted a device to log all those info on the computer and also indicate with a buzzing sound when the athlete made a mistake. (the buzzer was really optionnal)

Go there Read more and See Pics and Details on how to...
http://www.jeromedemers.com/blog/2010/06/university-semester-project-s5-wireless-accelerometer/

Don