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5.1 Function Description My projectl is Intelligent Elbow Motion-Assistance Actuator. This device is comprised of two parts. On part is intelligent arm gesture sensing and pattern matching implemented by FRDM-KV31. The other part is bi-direction elbow motion actuator that is implement by FRDM-MC-LVPMSM and motor with gear reducer. With all the problem, the basic idea is still can be accomplished. The main problems are heavier motor than I expected and unable to understand the sensor-fusion i ...
4.2 The revised Program Flow 4.2.1 My previous plan is running on FreeRTOS, which is fit for time-critical tasks and more concise in programming. Of course, application of interruption can do same job but if I have enough resource, I still would like to use real-time OS control. Now, My Flow Chart is as follows, 4.2.2 The function allocation of port A There are two pins to be used in this design, one for up direction and the other for down direction sensing. I have selected four I2C chan ...
4.1 Description of Demo Project 4.1.1 NXP has provided a demo project for PMSM control. With  a counter increment, the speed of motor change from 1000rpm, 2000rmp to 4000rpm, then to -1000rpm, -2000rpm, -4000rpm. The Freemaster embedded in this project can show this clearly in Graphic Interface. According to Reference manual , the control procedure is as follows, 4.1.2 Analysis of the demo project The structure tree of the project is as follows, The entry program is main.c, whic ...
Here it is, I put the electrical components in a box and bolted it to the arm, added a power switch and a reset switch to the box. ...
Previous posts Post 1 - Introduction Post 2 - Installing OpenCV - Prerequisites Post 3 - Installing OpenCV Post 4 - Installing Pygaze Post 5 - Installing eye tracker Post 6 - SPI communication Post 7 - SPI communication in PythonEyePrints - Post 8 - Getting started with Kinetis EyePrints - Post 9 - Mechanical design EyePrints - Post 10 - Mechanical design: the plotter EyePrints - Post 11 - Eye tracker software EyePrints - Post 12 - Getting started with the kit EyePrints - Post 13 - KDS Project E ...
I have to squeeze in one more update before I have to drive to Boston. The video below shows the fully functional Clear Walk system, with mirrors installed,  capable of redirecting sunlight anywhere it is needed under remote control. It could be an icy walkway or driveway that needs to be cleared, or it could be an indoor plant (redirecting sunlight through a window), or it could be some laundry hanging on a line. Here is a close-up of the electronics module showing the Bluetooth module, t ...
The Clear Walk system is finally fully operational under battery power. I have packaged the electronics in a small case which can be mounted on the frame. You can see a demo of the mechanics in operation in the following video. It has been a rocky project, with all sorts of setbacks and ornery issues. This project is characterized by large efforts to make small progress and overall a major effort trying to close on a workable solution. However, it looks like it is all coming together just in t ...