Coming up in Silicon Chip
AM/FM/DAB+ Radio with Touchscreen Interface
This is a world-first; a DIY world radio which can receive AM, FM and DAB+
broadcasts. It's controlled using a Micromite Explore 100 module with a 5-inch
colour touchscreen and has an on-board amplifier for driving stereo speakers, a
headphone output, line outputs and provision for external AM and VHF antennas.
Advertising Index
Altronics............................. FLYER
Dave Thompson...................... 103
Digi-Key Electronics.................... 5
Electrolube.................................. 9
High-Sensitivity Magnetometer
Emona Instruments................. IBC
This design uses off-the-shelf components to detect extremely small changes
in magnetic field strength. It can be used as a very sensitive metal detector or
for a number of other purposes, including moving vehicle detection.
Hare & Forbes..........................2-3
Isolated Serial Link
This small and easy-to-build board provides optical isolation for two devices
communicating over a 3.3V or 5V level serial link. It's great for connecting a
micro module with a mains or battery power supply to a PC, to prevent power
glitches and avoiding damage to the PC from a fault in the connected module.
HK Wentworth Ltd....................... 9
Jaycar............................ IFC,49-56
Keith Rippon Kit Assembly...... 103
LD Electronics......................... 103
LEACH Co Ltd........................... 67
LEDsales................................. 103
El Cheapo Modules
Master Instruments................... 11
The tiny DFPlayer Mini MP3 Player module plays audio files in MP3, WMA
and WAV formats from a microSD card or USB flash drive, to either a mono
speaker, stereo headphones or line level outputs all for just a few dollars.
METCASE Enclosures.............. 47
Low-voltage, High-current DC Motor Speed Controller
Part two of this series will appear in the December issue. It includes PCB construction and wiring details plus set-up, testing and usage instructions.
Microchip Technology........... 13,31
Mouser Electronics.................... 15
NPA Pty Ltd............................... 61
Ocean Controls......................... 12
Note: these features are planned or are in preparation and should appear
within the next few issues of Silicon Chip.
PCBcart................................... 71
The December 2018 issue is due on sale in newsagents by Thursday, November 29th. Expect postal delivery of subscription copies in Australia between November 27th and December 12th.
Rohde & Schwarz........................ 7
Notes & Errata
Super Digital Sound Effects Module, August & September 2018: in Fig.6 on
page 81 of the September issue, the 330kW resistor below the 1MW resistor next
to REG1 is incorrectly labelled as 22kW. It is correct in the circuit diagram and on
the production PCBs. Also, since publishing these articles, we discovered that
there is an alternative version of IC3 (IS31AP4991), the IS31AP4991A. This was
not mentioned in the original data sheet and it has a different pinout, so it will not
work in our design. Avoid using that chip. Replacement chips have already been
sent to those who would have received the incorrect IC from us.
PCB Designs........................... 103
SC Vintage Radio DVD.............. 45
Silicon Chip Xmas Tree.......... 101
Silicon Chip Shop...............96-97
Silicon Chip Subscriptions....... 87
The Loudspeaker Kit.com......... 59
TRIO Test & Measurement.... OBC
Tronixlabs................................ 103
Vintage Radio Repairs............ 103
Wagner Electronics................... 10
WARNING!
SILICON CHIP magazine regularly describes projects which employ a mains power supply or produce high voltage. All such
projects should be considered dangerous or even lethal if not used safely.
Readers are warned that high voltage wiring should be carried out according to the instructions in the articles. When working
on these projects use extreme care to ensure that you do not accidentally come into contact with mains AC voltages or high
voltage DC. If you are not confident about working with projects employing mains voltages or other high voltages, you are
advised not to attempt work on them. Silicon Chip Publications Pty Ltd disclaims any liability for damages should anyone be
killed or injured while working on a project or circuit described in any issue of SILICON CHIP magazine.
Devices or circuits described in SILICON CHIP may be covered by patents. SILICON CHIP disclaims any liability for the
infringement of such patents by the manufacturing or selling of any such equipment. SILICON CHIP also disclaims any liability
for projects which are used in such a way as to infringe relevant government regulations and by-laws.
Advertisers are warned that they are responsible for the content of all advertisements and that they must conform to the
Competition & Consumer Act 2010 or as subsequently amended and to any governmental regulations which are applicable.
104
Silicon Chip
Australia’s electronics magazine
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