Max’s Cool Beans cunning coding tips and tricks - May 2021

Outer Front Cover
Contents
Subscriptions: PE Subscription
Subscriptions: PicoLog Cloud
Back Issues: PICOLOG
Publisher's Letter
Feature: The Fox Report by Barry Fox
Feature: Techno Talk by Mark Nelson
Feature: Net Work by Alan Winstanley
Project: 7-Band Mono or Stereo Equaliser by John Clarke
Project: Touchscreen car altimeter by Peter Bennett
Project: DIY Solder ReFLow Oven with PID Control by Phil Prosser
Feature: Max’s Cool Beans by Max the Magnificent
Feature: Make it with Micromite by Phil Boyce
Feature: PICn’Mix by Mike Hibbett
Feature: AUDIO OUT by Jake Rothman
Feature: Circuit Surgery by Ian Bell
Feature: Practically Speaking by Jake Rothman
PCB Order Form: Max’s Cool Beans cunning coding tips and tricks by Max the Magnificent
Advertising Index: Max’s Cool Beans cunning coding tips and tricks

This is only a preview of the May 2021 issue of Practical Electronics.

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Practical Electronics PCB SERVICE PROJECT MAY 2021 CODE 7-Band Equaliser (Mono)................................................... 01104201 7-Band Equaliser (Stereo) ................................................. 01104202 Car Altimeter ...................................................................... 05105201 APRIL 2021 e o ven ctive e o ven ctive e o ven ctive re uency e erence ignal PRICE £8.95 £10.95 £7.95 rossover .................... 01106193 rossover ront anel ......... 01106195 £19.95 rossover .................... 01106196 istri utor.................................... CSE200103 £8.95 MARCH 2021 utu e uitar ects edal .............................................. 01102201 £12.95 rogra a le her al egulator eltier nter ace ........ 21109181 £18.95 rogra a le her al egulator eltier river ............ 21109182 una le rea .......................................................... CSE190502 £8.95 FEBRUARY 2021 e ote onitoring ...................................................... 27111191 JANUARY 2021 utu e alve rea liﬁer ................................................. 01112191 rduino ontroller ..................................................... 09207181 DECEMBER 2020 seudo ando e uence enerator ............................. 16106191 lever harger .................................................................. 14107191 here in liﬁer ....................................................... £9.95 £12.95 £10.95 £7.95 £11.95 . NOVEMBER 2020 ive hrist as ree o ................................................ 16107181-1 £6.95 hrist as ree o ................................................ 16107181-2 £14.95 hrist as ree o .............................................. 16107181-3 £24.95 hrist as ree o .............................................. 16107181-4 £34.95 nter ace oard ................................................... 16107182 £5.95 o er u ly plus acrylic s acer ................. 18111181 £14.95 o er u ly ront anel ﬁve ay dis lay e el .. 18111181-BZ £3.95 ay anel eter is lay ................................... 18111182 £7.95 OCTOBER 2020 igital udio illivolt eter................................................. 04108191 recision ignal liﬁer .................................................. 04107191 SEPTEMBER 2020 here in ............................................................. here in trans or er .......................................... icro ite lore ......................................................... 07108191 ltra rite river ......................................................... 16109191 AUGUST 2020 icro ite ac ac ............................................ 07106191 teering heel udio utton to n rared da tor .............. 05105191 JULY 2020 canning ignal enerator ........ 04106191 eech ynthesiser ith the as erry i ero ............... 01106191 ini organ ........................................................... ini organ selected arts ............................................ igh current olid state attery solator control ..... 05106191 igh current olid state attery solator o ... 05106192 JUNE 2020 rduino rea out oard . inch is lay ............... 24111181 i in ut udio elector ain oard ................................. 01110191 i in ut udio elector s itch anel oard ..................... 01110192 £8.95 £6.95 . . £5.95 £5.95 £9.95 £7.95 £11.95 £5.95 . . £6.95 £9.95 £6.95 £10.95 PROJECT MAY 2020 CODE ltra lo distortion rea liﬁer n ut elector ......................... 01111112 ltra lo distortion rea liﬁer ush utton n ut elector ..... 01111113 niversal egulator .................................................................... 18103111 ireless ata e eater .............................................. 15004191 ridge ode da tor or liﬁer ............................................. 01105191 i stic er inal ................................................................ 02103191 nalogue noise ith tilt control ................................................... udio ectru nalyser ........................................................... PRICE £11.25 £7.95 £8.50 £7.95 £4.95 . . APRIL 2020 li li li li dot dot dot dot is lay lac coil oard................................................. 19111181 is lay lac i els ....................................................... 19111182 is lay lac ra e ....................................................... 19111183 is lay green driver oard ............................................ 19111184 MARCH 2020 iode urve lotter ........................................................... 04112181 tea rain histle iesel orn ound enerator ............... 09106181 niversal assive rossover one o ...................................... FEBRUARY 2020 otion ensing o er itch ................................... 05102191 ey oard ouse da tor........................................ 24311181 ctive rossover ............................................ 01106191 ctive rossover ...................................... 01106192 ctive rossover ............................................ 01106193 ctive rossover o er routing .............................. 01106194 ctive rossover ront anel .................................. 01106195 ctive rossover ............................................. 01106196 JANUARY 2020 solated erial in ............................................................ 24107181 DECEMBER 2019 tre ely ensitive agneto eter ................................... 04101011 our channel igh current an and u ontroller ... 05108181 seless o ....................................................................... 08111181 NOVEMBER 2019 innitus innitus nso nia iller nso nia iller £14.95 £10.95 £8.50 . £5.95 £8.50 £29.95 £8.50 £16.75 £8.75 £11.50 aycar case see te t ........... 01110181 ltronics case see te t ........ 01110182 £8.75 £8.75 rogra a le synced re uency e erence .......... 04107181 igital o and ontrol rogra er or ecoders ........ 09107181 to isolated ains elay ain oard ........................... 10107181 to isolated ains elay ter inal e tension oard ...10107182 £11.50 £9.95 OCTOBER 2019 AUGUST 2019 rain ave onitor ............................................................. 25108181 u er igital ound ects odule .................................. 01107181 atchdog lar ................................................................ 03107181 here in three oards itch volu e ............. here in co onent ac see . ugust ... JULY 2019 ull ave niversal otor eed ontroller .............. 10102181 ecurring vent e inder ................................................ 19107181 e erature itch ................................................... 05105181 JUNE 2019 rduino ased eter ................................................... 04106181 le iti er................................................................... 19106181 £11.50 £12.90 £6.95 £8.00 . . £12.90 £8.00 £10.45 £8.00 £10.45 s or ost recent PE EPE constructional ro ects are availa le. ro the uly issue on ards s ith eight digit codes have sil screen overlays and here a lica le are dou le sided have lated through holes and solder as . hey are si ilar to hotos in the ro ect articles. arlier s are li ely to e ore asic and ay not include sil screen overlay e single sided lac lated through holes and solder as . l ays chec rice and availa ility in the latest issue or online. large nu er o older oards are listed or ordering on our e site. 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. ac issues o articles are availa le see ac ssues age or details. 66 Practical Electronics | May | 2021 Double-sided | plated-through holes | solder mask PROJECT MAY 2019 CODE 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 FEBRUARY 2019 1.5kW Induction Motor Speed Controller........................... 10105122 NOVEMBER 2018 Super-7 AM Radio Receiver .............................................. 06111171 OCTOBER 2018 6GHz+ Touchscreen Frequency Counter .......................... 04110171 Two 230VAC MainsTimers ................................................ 10108161 10108162 SEPTEMBER 2018 3-Way Active Crossover .................................................... 01108171 Ultra-low-voltage Mini LED Flasher ................................... 16110161 AUGUST 2018 PRICE £5.60 £10.45 £5.60 £14.00 AUGUST 2017 £12.88 £22.60 £5.60 £27.50 Touchscreen Appliance Energy Meter – Part 1 ................. 04116061 uto otive ensor odiﬁer .............................................. 05111161 £17.75 £12.88 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 £8.45 £5.60 £13.95 £8.05 £7.05 £8.05 MARCH 2018 Stationmaster Main Board ................................................. 09103171 + Controller Board .............................................. 09103172 liﬁer odule o er u ly .......................... 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 uild the liﬁer odule ..................................... 01108161 50A Battery Charger Controller ......................................... 11111161 Micropower LED Flasher (45 × 47mm) ......................... 16109161 (36 × 13mm) ......................... 16109162 Phono Input Converter ...................................................... 01111161 £35.00 £12.88 PRICE NOVEMBER 2017 SEPTEMBER 2017 £27.50 CODE Precision Voltage and Current Reference – Part 2............ 04110161 £11.25 £8.60 Universal Temperature Alarm ............................................ 03105161 Power Supply For Battery-Operated Valve Radios ........... 18108171 18108172 18108173 18108174 JULY 2018 PROJECT DECEMBER 2017 Compact 8-Digit Frequency Meter..................................... 04105161 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 £15.35 £12.88 £8.00 £5.60 £8.00 £12.88 £10.45 £8.00 £10.45 £12.90 £10.45 £8.00 £17.75 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 ......................................................... ......................................................... ......................................................... ......................................................... ......................................................... Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......................................................... Tel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Email . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . £17.75 I enclose payment of £ . . . . . . . . . . . . . . (cheque/PO in £ sterling only) £16.45 payable to: Practical Electronics £12.88 £12.88 £15.30 £12.88 £12.88 Card No . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valid From . . . . . . . . . . . . . . . . . Expiry Date . . . . . . . . . . . . . . . . Card Security No . . . . . . . . . . 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 he ues should e ade aya le to ractical lectronics (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 | May | 2021 67