October 2020 Meeting Report

Alex reports :

I spoke about my algorithm and code to perform automatic daylights savings changes to my bedside clock.

I also showed some snapshots of waveforms generated by my AD9833 function generator module and how forcing it to generate 20Mhz broke the square wave generation.

Also mentioned was the Serialplot utility that monitors & copies data on a specified serial port.

Details at : https://hackaday.io/project/5334-serialplot-realtime-plotting-software/log/183605-serialplot-v011-release

Steve presented information about measuring pressure spots inside a prosthetic leg (leg 'socket') and sending the data wirelessly to a PC.

An arduino nano attached to the leg reads from 4 capacitive pressure sensors that are installed on the inside surface of a leg prosthesis.

The mobile unit is powered by a USB power bank.

4 sensors , 10 readings per second, total 40 readings per second. Includes a milliseconds relative time stamp.

Data is sent wirelessly using a pair of Wixels. Wixels use the 2.4GHz band and a closed protocol but are easily set up via a Windows utility and provide the wireless serial channel. Wixels are available from Pololu.