Coming up in Silicon Chip
Rohde & Schwarz RTM3004 oscilloscope review
Advertising Index
We take an in-depth look at one of Rohde & Schwarz's newest scopes, the
RTM3004, with 1GHz bandwidth, 5GHz sampling, 10-bit vertical resolution,
16 digital channels and an 80Msample memory.
Altronics.................................. 76-79
Facett Hearing Aids from Blamey Saunders
Electrolube................................... 11
Ross Tester reports on his experiences with the latest set of hearing aids from
leading Australian supplier Blamey Saunders hears.
Hare & Forbes............................. 2-3
Introduction to programming the Cyprus CY8CKIT
Keith Rippon Kit Assembly......... 103
This low-cost module incorporates a 32-bit microcontroller and a set of
reprogrammable analog circuitry which can be used for a wide range of tasks.
We show you how to use the free Integrated Development Environment.
Dave Thompson......................... 103
Digi-Key Electronics....................... 5
Jaycar............................... IFC,49-56
LD Electronics............................ 103
LEACH Co Ltd................................ 9
LEDsales.................................... 103
Radiant Heater Controller
It will be winter in just a few months. Staying comfortable at night can be a
challenge. This new Heater Controller design takes care of that, adjusting
the heating power while you are sleeping to provide gentle heat without any
clicking thermostats or blinking lights which may wake you up.
El Cheapo Modules – RF attenuators
Jim Rowe describes a programmable, 63-step, 4GHz RF digital step attenuator
module with a range of applications. Plus he also looks at a fixed four-range
DC-4GHz attenuator
Microchip Technology...........OBC,21
Ocean Controls............................ 13
Pakronics..................................... 11
PCBcart...................................... 33
Sesame Electronics................... 103
SC Online Shop...................... 96-97
SC Radio, TV & Hobbies DVD.... 101
Note: these features are planned or are in preparation and should appear
within the next few issues of Silicon Chip.
The Loudspeaker Kit.com............ 75
The April 2018 issue is due on sale in newsagents by Thursday, March 29th.
Expect postal delivery of subscription copies in Australia between March
29th and April 13th.
Vintage Radio Repairs............... 103
Tronixlabs................................... 103
Wagner Electronics........................ 7
Notes & Errata
Lath-e-Boy High-power Lathe Controller, January 2018: the wiring colours shown in the photos on pages 40, 41 and 43
and in the lower-right corner of the circuit diagram on page 39 are not safe. The four wires to the induction motor should be
colour coded red, white, dark blue (from pin 2 of CON7 to the motor) and brown. Green/yellow striped wire must be used
for earthing the motor frame (and only for earth!).
Touchscreen Altimeter and Weather Station, December 2017: there are some inconsistencies and ambiguities between
the circuit diagram (Fig.1), sensor wiring (Fig.3) and parts list, regarding the temperature and humidity sensor. The circuit
diagram on page 25 showed a bare DHT22/AM2302 sensor with correctly wired pins, however, pin 4 was shown on the left
side of the device and pin 1 on the right, the opposite of how they are numbered on the physical module.
Also, the module shown in Fig.3 and the accompanying photo is mounted on a small breakout board with two extra
components which were not shown on Fig.1 and not mentioned in the text or parts list. The sensor we supply does not come
with the breakout board.
The circuit diagram in the online edition has been corrected to show the two extra components. If the sensor you’ve
purchased does not come on a breakout board, simply solder a 100nF capacitor between pins 1 and 4 of the DHT22/AM2302
and a 1kW resistor between pins 1 and 2. Note that the 1kW resistor could just as easily be fitted between the +5V and pin
21 (DATA) connections on the BackPack module.
High-Power DC Fan Speed Controller, January 2018: the IPP80N06S2L-07 Mosfet is listed in the parts list as being in a
TO-92 package but it is actually in a TO-220 package.
Arduino Mega Box Music Player, February 2018: the Arduino Uno and Mega do not share the same SPI pin connections. Pins
50, 51 & 52 must be connected by flying leads to digital pins 12, 11 & 13 respectively before the SD card will work on the Mega.
SC200 Audio Amplifier, January-March 2017: the power supply is mistakenly listed as 45-0-45V to provide ±57V
on page 32 of the January issue and page 85 of the February issue. The transformer is actually 40-0-40V as described in
the parts list and circuit diagram in the March issue where the power supply is described in full.
104
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