Contents
Vol.37, No.06
June 2024
16 Privacy Phones
Modern smartphones are invaluable, letting you look up information nearly
anywhere, but the tradeoff is that your data is collected when using the
phone and online services. So what can you do to reduce your ‘footprint’?
By Dr David Maddison, VK3DSM
Online privacy
32 Electronex 2024
Electronex – the Electronics Design and Assembly Expo – is being held at
Rosehill Gardens Event Centre, Sydney, on the 19th & 20th of June this year
in conjunction with the SMCBA Conference. Entry is free for all visitors.
By Noel Gray (AEE)
Electronics exhibition
64 MicroMag3 Magnetic Sensor
The MicroMag3 measures the strength of a magnetic field in three axes
(north-south, east-west and up-down). It can be used as a magnetic
compass and inclinometer.
By Jim Rowe
Using electronic modules
46 Jaycar-sponsored Mini Projects
This month’s set of Mini Projects includes a self toggling relay and an
Arduino-based clap-activated switch that can be used to turn devices on or
off remotely. Each project is designed so that anyone can build it.
By Tim Blythman
Mini projects
54 ESR Test Tweezers
Privacy Phones
Page 16
ElectroneX 2024
Rosehill Gardens, June 19-20
Page 32
Page 54
ESR TEST
TWEEZERS
Page 64
MicroMag3
3-axis
Magnetic Sensor
2
Editorial Viewpoint
5
Mailbag
31
Subscriptions
90
Serviceman’s Log
96
Circuit Notebook
99
Vintage Radio
106
Online Shop
108
Ask Silicon Chip
82 WiFi DDS Function Generator, Pt2
111
Market Centre
This Function Generator provides two wide-range, low distortion outputs and
can be controlled from its touchscreen or remotely via a WiFi connection. In
this final part of the series we detail building and operating it.
By Richard Palmer
Test equipment project
112
Advertising Index
112
Notes & Errata
This new version of our Test Tweezers line has the handy capability of
measuring capacitor ESR (equivalent series resistance) and capacitance. It
can do all of this in a compact form factor using just a single 3V cell.
By Tim Blythman
Test equipment project
68 USB-C Serial Adaptor
Despite being introduced nearly a decade ago, many USB serial adaptors
with Type-C sockets do not properly adhere to the standard or have driver
problems. So we’ve designed a simple project to give you a proper adaptor.
By Tim Blythman
Computer interface project
74 DC Supply Protectors
We have designed three different DC Supply Protectors to help you protect
equipment from malfunctioning or incorrect power supplies. They all
feature protection from overvoltage and reverse polarity.
By John Clarke
Circuit protection project
1. USB serial data interceptor
2. NPN/PNP transistor tester
3. Bin reminder using an Arduino
4. Programming a Micromite over Bluetooth
HeathKit GW-21A handheld transceivers
