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Practical Electronics PCB SERVICE PROJECT JANUARY 2021 CODE utube Valve Preamplifier ................................................. 01112191 Arduino DCC Controller ..................................................... 09207181 PRICE £12.95 £10.95 DECEMBER 2020 Pseudo-Random Sequence Generator ............................. 16106191 £7.95 Clever Charger .................................................................. 14107191 £11.95 PE heremin Amplifier ....................................................... AO-1220-01 £7.95 NOVEMBER 2020 LED Christmas Tree (1 off) ................................................ 16107181-1 £6.95 LED Christmas Tree (4 off) ................................................ 16107181-2 £14.95 LED Christmas Tree (12 off) .............................................. 16107181-3 £24.95 LED Christmas Tree (20 off) .............................................. 16107181-4 £34.95 USB/SPI Interface Board ................................................... 16107182 £5.95 45V/8A Power Supply PCB plus acrylic spacer ................. 18111181 £14.95 V A Power Supply front panel five-way display be el .. 18111181-BZ £3.95 Five-way LCD Panel Meter/Display ................................... 18111182 £7.95 OCTOBER 2020 Digital Audio Millivoltmeter................................................. 04108191 Precision Signal Amplifier .................................................. 04107191 SEPTEMBER 2020 PE Theremin PSU ............................................................. AO-0920-01 PE Theremin PSU transformer .......................................... AO-0920-02 Micromite Explore-28......................................................... 07108191 Ultrabrite LED Driver ......................................................... 16109191 AUGUST 2020 Micromite LCD BackPack V3 ............................................ 07106191 Steering Wheel Audio Button to Infrared Adaptor .............. 05105191 £8.95 £6.95 £5.95 £7.95 £5.95 £5.95 £7.95 £7.95 JULY 2020 AM/FM/CW Scanning HF/VHF RF Signal Generator ........ 04106191 £11.95 Speech Synthesiser with the Raspberry Pi Zero ............... 01106191 £5.95 PE Mini-organ PCB ........................................................... AO-0720-01 £14.95 PE Mini-organ selected parts ............................................ AO-0720-02 £8.95 High-current Solid-state 12V Battery Isolator – control ..... 05106191 £6.95 High-current Solid-state 2V Battery solator E 2o ... 05106192 £9.95 JUNE 2020 Arduino breakout board – 3.5-inch LCD Display ............... 24111181 Six-input Audio Selector main board ................................. 01110191 Six-input Audio Selector switch panel board ..................... 01110192 £6.95 10.95 MAY 2020 ltra-low-distortion Preamplifier nput Selector ......................... 01111112 ltra-low-distortion Preamplifier pushbutton nput Selector ..... 01111113 Universal Regulator .................................................................... 18103111 MH ireless ata epeater .............................................. 15004191 Bridge-mode Adaptor for Amplifier ............................................. 01105191 iCEstick VGA Terminal ................................................................ 02103191 Analogue noise with tilt control ................................................... AO-0520-01 Audio Spectrum Analyser ........................................................... PM-0520-01 11.25 7.95 8.50 7.95 4.95 7.95 8.95 MARCH 2020 Diode Curve Plotter ........................................................... 04112181 Steam Train Whistle / Diesel Horn Sound Generator ............... 09106181 Universal Passive Crossover (one off) ...................................... UPC0320 CODE Motion-Sensing 12V Power Switch ................................... 05102191 USB Keyboard / Mouse Adaptor........................................ 24311181 DSP Active Crossover (ADC) ............................................ 01106191 DSP Active Crossover (DAC) ×2 ...................................... 01106192 DSP Active Crossover (CPU) ............................................ 01106193 DSP Active Crossover (Power/routing).............................. 01106194 DSP Active Crossover (Front panel).................................. 01106195 DSP Active Crossover (LCD)............................................. 01106196 JANUARY 2020 Isolated Serial Link ............................................................ 24107181 DECEMBER 2019 Extremely Sensitive Magnetometer ................................... 04101011 Four-channel High-current DC Fan and Pump Controller ... 05108181 Useless Box ....................................................................... 08111181 NOVEMBER 2019 Tinnitus & Insomnia Killer (Jaycar case – see text) ........... 01110181 Tinnitus & Insomnia Killer (Altronics case – see text) ........ 01110182 OCTOBER 2019 Programmable GPS-synced Frequency Reference .......... 04107181 Digital Command Control Programmer for Decoders ........ 09107181 Opto-isolated Mains Relay (main board) ........................... 10107181 Opto-isolated Mains Relay (2 × terminal extension board)...10107182 JULY 2019 Full-wave 10A Universal Motor Speed Controller .............. 10102181 Recurring Event Reminder ................................................ 19107181 Temperature Switch Mk2 ................................................... 05105181 JUNE 2019 Arduino-based LC Meter ................................................... 04106181 USB Flexitimer................................................................... 19106181 MAY 2019 2× 12V Battery Balancer ................................................... 14106181 Deluxe Frequency Switch .................................................. 05104181 USB Port Protector ............................................................ 07105181 APRIL 2019 Heater Controller ............................................................... 10104181 MARCH 2019 10-LED Bargraph Main Board ........................................... 04101181 +Processing Board ............................................. 04101182 NOVEMBER 2018 Super-7 AM Radio Receiver .............................................. 06111171 £10.95 £8.50 £12.50 £5.95 £8.50 £29.95 £8.50 £16.75 £8.75 £11.50 £8.75 £8.75 £11.50 £8.75 £11.50 Brainwave Monitor ............................................................. 25108181 £12.90 Super Digital Sound Effects Module .................................. 01107181 £5.60 Watchdog Alarm ................................................................ 03107181 £8.00 PE Theremin (three boards: pitch, volume, VCA) ............. PETX0819 £19.50 PE Theremin component pack (see p.56, August 2019) ... PETY0819 £15.00 1.5kW Induction Motor Speed Controller........................... 10105122 £14.95 PRICE AUGUST 2019 FEBRUARY 2019 APRIL 2020 Flip-dot Display black coil board................................................. 19111181 Flip-dot Display black pixels ....................................................... 19111182 Flip-dot Display black frame ....................................................... 19111183 Flip-dot Display green driver board ............................................ 19111184 PROJECT FEBRUARY 2020 OCTOBER 2018 H ouchscreen requency Counter .......................... 04110171 Two 230VAC MainsTimers ................................................ 10108161 10108162 £12.90 £8.00 £10.45 £8.00 £10.45 £5.60 £10.45 £5.60 £14.00 £11.25 £8.60 £35.00 £27.50 £12.88 £12.88 PCBs for most recent PE/EPE constructional projects are available. From the July 2013 issue onwards, PCBs with eight-digit codes have silk screen overlays and, where applicable, are double-sided, have plated-through holes, and solder mask. They are similar to photos in the project articles. Earlier PCBs are likely to be more basic and may not include silk screen overlay, be single-sided, lack plated-through holes and solder mask. Always check price and availability in the latest issue or online. A large number of older boards are listed for ordering on our website. In most cases we do not supply kits or components for our projects. For older projects it is important to check the availability of all components before purchasing PCBs. Back issues of articles are available – see Back Issues page for details. 68 Practical Electronics | January | 2021 Double-sided | plated-through holes | solder mask PROJECT SEPTEMBER 2018 CODE 3-Way Active Crossover .................................................... 01108171 Ultra-low-voltage Mini LED Flasher ................................... 16110161 AUGUST 2018 PRICE £22.60 £5.60 Universal Temperature Alarm ............................................ 03105161 Power Supply For Battery-Operated Valve Radios ........... 18108171 18108172 18108173 18108174 £27.50 Touchscreen Appliance Energy Meter – Part 1 ................. 04116061 Automotive Sensor Modifier .............................................. 05111161 £17.75 £12.88 JULY 2018 JUNE 2018 High Performance 10-Octave Stereo Graphic Equaliser ... 01105171 MAY 2018 High Performance RF Prescaler........................................ 04112162 Micromite BackPack V2..................................................... 07104171 Microbridge ........................................................................ 24104171 APRIL 2018 Spring Reverberation Unit ................................................. 01104171 DDS Sig Gen Lid ............................................................... Black DDS Sig Gen Lid ............................................................... Blue DDS Sig Gen Lid ............................................................... Clear £7.05 £15.30 £10.45 £10.45 £5.60 £15.30 £8.05 £7.05 £8.05 MARCH 2018 Stationmaster Main Board ................................................. 09103171 + Controller Board .............................................. 09103172 SC200 Amplifier Module – Power Supply .......................... 01109111 FEBRUARY 2018 GPS-Synchronised Analogue Clock Driver ....................... 04202171 High-Power DC Motor Speed Controller – Part 2 + Control Board ................................................... 11112161 + Power Board .................................................... 11112162 JANUARY 2018 High-Power DC Motor Speed Controller – Part 1 .............. 11112161 Build the SC200 Amplifier Module ..................................... 01108161 DECEMBER 2017 Precision Voltage and Current Reference – Part 2............ 04110161 NOVEMBER 2017 50A Battery Charger Controller ......................................... 11111161 Micropower LED Flasher (45 × 47mm) ......................... 16109161 (36 × 13mm) ......................... 16109162 Phono Input Converter ...................................................... 01111161 SEPTEMBER 2017 Compact 8-Digit Frequency Meter..................................... 04105161 AUGUST 2017 Micromite-Based Touch-screen Boat Computer GPS ....... 07102122 Fridge/Freezer Alarm ......................................................... 03104161 JULY 2017 Micromite-Based Super Clock ........................................... 07102122 Brownout Protector for Induction Motors ........................... 10107161 JUNE 2017 Ultrasonic Garage Parking Assistant ................................. 07102122 Hotel Safe Alarm................................................................ 03106161 100dB Stereo LED Audio Level/VU Meter ......................... 01104161 £17.75 £16.45 PROJECT MAY 2017 CODE PRICE The Micromite LCD BackPack........................................... 07102122 Precision 230V/115V 50/60Hz Turntable Driver ................ 04104161 APRIL 2017 Microwave Leakage Detector ............................................ 04103161 Arduino Multifunctional 24-bit Measuring Shield ............... 04116011 + RF Head Board ................................................ 04116012 Battery Pack Cell Balancer ................................................ 11111151 MARCH 2017 Speech Timer for Contests & Debates .............................. 19111151 FEBRUARY 2017 Solar MPPT Charger/Lighting Controller ........................... 16101161 Turntable LED Strobe ........................................................ 04101161 JANUARY 2017 High-performance Stereo Valve Preamplifier .................... 01101161 High Visibility 6-Digit LED Clock ........................................ 19110151 £11.25 £19.35 £8.00 £17.75 £9.00 £16.42 £17.75 £7.60 £17.75 £16.42 For the many pre-2017 PCBs that we stock please see the PE website: www.electronpublishing.com PE/EPE PCB SERVICE Order Code Project Quantity Price ......................................................... £12.88 ......................................................... £12.88 £15.30 ......................................................... £12.88 £12.88 ......................................................... £15.35 £12.88 £8.00 £5.60 £8.00 ......................................................... 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You can also order PCBs by phone, email or via the shop on our website: www.electronpublishing.com No need to cut your issue – a copy of this form is just as good! All prices include VAT and UK p&p. Add £4 per project for post to Europe; £5 per project outside Europe. Orders and payment should be sent to: Practical Electronics, Electron Publishing Ltd 113 Lynwood Drive, Merley, Wimborne, Dorset BH21 1UU Tel 01202 880299 Email: shop<at>electronpublishing.com On-line Shop: www.epemag.com Cheques should be made payable to ‘Practical Electronics’ (Payment in £ sterling only). NOTE: Most boards are in stock and sent within seven days of receipt of order, please allow up to 28 days delivery if we need to restock. Practical Electronics | January | 2021 69