July 2021 Meeting Report

AGENDA for July 2021 meeting:

6.00 Review of June 2021 Meeting Report

6.15 Martin "Remote Presence" Robot system

& Raspberry Pi Pico

6.45 Two free eMagazines

7.00 ALEX - a comparison of network transfer speeds over wifi, gigabit lan and ethernet over powerline

& a serialplot tool to plot charts with data from serial ports.

7.30 WHAT IS THIS? Wire diversion in portable transistor radio? What does it do?

7.45 Forum /general discussion

8.00 Close

ALEX

Did an ethernet transfer speeds comparison over wifi, gigabit lan and ethernet over powerline.

He also showed us the Serial Plot program, which is open source and has lots of features for displaying & investigating data.

MARTIN

Showed us his 'remote presence robot'. It has a base unit with the drive motors and batteries. Then there's about a 1m pole sticking up which has a camera. The camera is the ESP32-CAM module.

STEVE

MYSTERY DESIGN QUESTION ??? I was doing a portable radio repair and noticed there is a 'half loop' in the wire from the battery positive to the PCB. What is the function of this folded shape in the wire? Is it for electrical or mechanical reasons?

We also mentioned two eMagazines - MagPi Magazine site has tutorials & projects. Also HackSpace magazine.

And two You Tube channels - Andreas Spiess & Electroboom