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Forum: Hobby Circuits and Small Projects Problems

Hobby Electronics Circuits, circuits samples, electronics in house and in cars, amplifiers, subwoofers, trasmitters, receivers, generators, meters.

  1. Sticky Thread Sticky: Can anyone ID these chips?

    Started by lteschler, 22nd November 2016 15:08
    2 Attachment(s)
    • Replies: 1
    • Views: 11,620
    d123
    22nd November 2016, 22:02 Go to last post

  2. Sticky Thread Sticky: Everything you wanted to know about soldering and desoldering but were afraid to ask

    Started by E-design, 2nd July 2013 08:01
    • Replies: 4
    • Views: 21,437
    Rattanee
    2nd August 2014, 19:26 Go to last post

  3. Sticky Thread Sticky: Read this before posting.

    Started by pranam77, 21st August 2009 09:14
    • Replies: 0
    • Views: 24,505
    pranam77
    21st August 2009, 09:14 Go to last post

  1. Help required for ST7920 GLCD with Arduino GLCD

    Started by chi239, Today 07:52
    • Replies: 0
    • Views: 25
    chi239
    Today, 07:52 Go to last post

  2. How to move metal elements via magnetic waves?

    Started by mowpsi, 6th June 2019 23:20
    1 Attachment(s)
    • Replies: 7
    • Views: 283
    FvM
    Yesterday, 22:44 Go to last post

  3. Led project. Led on at nightime.

    Started by Wynge, 9th June 2019 20:14
    1 Attachment(s)
    • Replies: 14
    • Views: 454
    kripacharya
    Yesterday, 05:35 Go to last post

  4. Tip41c/42c arrangement problem

    Started by Javid.zare.s, 8th June 2019 10:56
    2 Attachment(s)
    • Replies: 15
    • Views: 408
    Easy peasy
    15th June 2019, 22:03 Go to last post

  5. Help converting an audio intercom into a handsfree audio intercom

    Started by nanomess, 13th June 2019 21:45
    1 Attachment(s)
    • Replies: 2
    • Views: 274
    nanomess
    14th June 2019, 01:10 Go to last post

  6. heat shrink tubing over heat shrink tubing

    Started by csdave, 13th June 2019 14:58
    • Replies: 7
    • Views: 175
    dick_freebird
    13th June 2019, 19:16 Go to last post

  7. Power supply duel_5v/15v from 230:15v 1amp transformer

    Started by sajsaj220, 13th June 2019 13:08
    1 Attachment(s)
    • Replies: 2
    • Views: 104
    KlausST
    13th June 2019, 18:22 Go to last post

  8. Help wiring a Ne555 Timer delay module (monostable?)

    Started by Suppress, 11th June 2019 07:05
    2 Attachment(s)
    • Replies: 9
    • Views: 322
    betwixt
    13th June 2019, 08:28 Go to last post

  9. O/P not Extected in CAMMON ANODE 7-SEGMENTS

    Started by sajsaj220, 12th June 2019 08:02
    1 Attachment(s)
    • Replies: 6
    • Views: 168
    FvM
    12th June 2019, 21:37 Go to last post

  10. using a crankshaft position sensor to implement electronic ignition

    Started by Build-A-Burger, 8th June 2019 19:00
    • Replies: 1
    • Views: 139
    dick_freebird
    8th June 2019, 19:43 Go to last post

  11. whats the waveform icon on multi-meter

    Started by Javid.zare.s, 5th June 2019 22:44
    4 Attachment(s)
    • Replies: 6
    • Views: 262
    wwfeldman
    8th June 2019, 04:10 Go to last post

  12. [moved] connector / terminal block

    Started by michael1834, 7th June 2019 14:25
    1 Attachment(s)
    • Replies: 1
    • Views: 88
    KlausST
    7th June 2019, 14:48 Go to last post

  13. simple proximity sensor, help needed

    Started by Javid.zare.s, 4th June 2019 23:51
    1 Attachment(s)
    • Replies: 5
    • Views: 241
    betwixt
    6th June 2019, 08:55 Go to last post

  14. Driving a buzzer using a transistor

    Started by hobbyiclearner, 16th May 2019 19:44
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 32
    • Views: 4,429
    Nik_2213
    3rd June 2019, 16:09 Go to last post

  15. Differential pressure sensor

    Started by hemnath, 24th May 2019 13:49
    • Replies: 5
    • Views: 529
    FvM
    25th May 2019, 09:54 Go to last post

  16. [SOLVED] Solder dots on PCB traces

    Started by Milhouse11, 24th May 2019 03:31
    1 Attachment(s)
    • Replies: 7
    • Views: 540
    Milhouse11
    24th May 2019, 15:52 Go to last post

  17. Question about transmitter

    Started by ljp2706, 22nd May 2019 04:21
    • Replies: 7
    • Views: 605
    kripacharya
    23rd May 2019, 22:06 Go to last post

  18. Attract fish by sound, light or anything else

    Started by i3layli, 22nd May 2019 12:00
    • Replies: 4
    • Views: 367
    Kajunbee
    23rd May 2019, 04:40 Go to last post

  19. dc to ac coverter circuit not working

    Started by Javid.zare.s, 16th May 2019 23:08
    1 Attachment(s)
    • Replies: 7
    • Views: 912
    Easy peasy
    22nd May 2019, 22:30 Go to last post

  20. [moved] IC prgramming problem

    Started by hasithgayan, 15th May 2019 00:15
    1 Attachment(s)
    • Replies: 7
    • Views: 452
    ads-ee
    15th May 2019, 23:24 Go to last post

  21. [SOLVED] Arduino nano project Arduino radio controller

    Started by gaco16, 11th May 2019 10:38
    1 Attachment(s)
    • Replies: 6
    • Views: 1,520
    gaco16
    11th May 2019, 19:49 Go to last post

  22. PWM selection for higher amperage

    Started by Boosted67, 3rd May 2019 02:50
    • Replies: 13
    • Views: 2,865
    c_mitra
    9th May 2019, 14:24 Go to last post

  23. GY-89(LSM303D) + arduino + SPI

    Started by abimann, 6th May 2019 14:37
    10 Attachment(s)
    • Replies: 7
    • Views: 388
    KlausST
    9th May 2019, 10:24 Go to last post

  24. [SOLVED] SHTW2 Sensor interface with nordic nrf52810 MCU

    Started by faiz18, 7th May 2019 08:36
    5 Attachment(s)
    • Replies: 6
    • Views: 3,393
    faiz18
    8th May 2019, 13:33 Go to last post

  25. A little help with PWM selection?

    Started by Boosted67, 30th April 2014 19:07
    • Replies: 7
    • Views: 1,184
    KlausST
    3rd May 2019, 16:37 Go to last post

  26. First 555 timer circuit, bunch of questions using a relay

    Started by kingtal0n, 21st April 2019 07:49
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 20
    • Views: 5,233
    d123
    2nd May 2019, 18:21 Go to last post

  27. Adding MIDI switching to a guitar pedal not designed for it

    Started by skarkowtsky, 1st May 2019 00:51
    • Replies: 7
    • Views: 1,169
    skarkowtsky
    1st May 2019, 18:33 Go to last post

  28. Arduino to Arduino using Serial through MAX232

    Started by Xenobius, 24th April 2019 08:43
    • Replies: 3
    • Views: 1,479
    Xenobius
    1st May 2019, 12:21 Go to last post

  29. LM741 Bass/Treble & Volume Control

    Started by Thayne, 2nd November 2018 15:46
    5 Attachment(s)
    • Replies: 15
    • Views: 1,921
    betwixt
    24th April 2019, 11:57 Go to last post

  30. [moved] How to design a crystall oscilator circuit using CMOS 40106 DESIGN

    Started by thandana, 23rd April 2019 13:45
    1 Attachment(s)
    • Replies: 7
    • Views: 979
    Aussie Susan
    23rd April 2019, 23:58 Go to last post
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