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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: 11,859
    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: 21,715
    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: 24,694
    pranam77
    21st August 2009, 09:14 Go to last post

  1. Wireless door bell Sender not working

    Started by fixit7, 11th July 2019 13:50
    • Replies: 5
    • Views: 257
    fixit7
    Today, 06:45 Go to last post

  2. Applications I can work On

    Started by electronicsman, 6th July 2019 15:55
    • Replies: 3
    • Views: 646
    Swend
    8th July 2019, 14:22 Go to last post

  3. Pool Saltwater Chlorine Generator - PCB Help Needed

    Started by Bogey, 3rd July 2019 18:03
    6 Attachment(s)
    • Replies: 4
    • Views: 399
    betwixt
    5th July 2019, 18:58 Go to last post

  4. AD8619 Vol Measurement

    Started by chandlerbing65nm, 4th July 2019 11:49
    1 Attachment(s)
    • Replies: 1
    • Views: 176
    KlausST
    4th July 2019, 12:12 Go to last post

  5. [SOLVED] driving a relay (5v supply)

    Started by Javid.zare.s, 2nd July 2019 09:19
    1 Attachment(s)
    • Replies: 4
    • Views: 293
    KlausST
    2nd July 2019, 19:01 Go to last post

  6. Every few Hours clock running fast rtc1307

    Started by sajsaj220, 24th June 2019 19:30
    • Replies: 5
    • Views: 290
    andre_teprom
    1st July 2019, 13:08 Go to last post

  7. PC based Oscilloscopes

    Started by electronicsman, 30th June 2019 12:31
    • Replies: 4
    • Views: 308
    Swend
    1st July 2019, 07:50 Go to last post

  8. Adding a light parallel to existing loudspeaker circuit

    Started by gubavac111, 29th June 2019 15:48
    1 Attachment(s)
    • Replies: 6
    • Views: 335
    gubavac111
    30th June 2019, 09:34 Go to last post

  9. Car battery STARTER voltage help (not charger) using variety of methods (possibly AC)

    Started by kingtal0n, 25th June 2019 04:16
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 21
    • Views: 908
    BradtheRad
    27th June 2019, 07:12 Go to last post

  10. [SOLVED] Tip41c/42c arrangement problem

    Started by Javid.zare.s, 8th June 2019 10:56
    2 Pages •
    1 2
    3 Attachment(s)
    • Replies: 38
    • Views: 1,473
    Easy peasy
    26th June 2019, 20:23 Go to last post

  11. Display segment issue

    Started by Kick, 20th June 2019 07:47
    1 Attachment(s)
    • Replies: 2
    • Views: 241
    KlausST
    20th June 2019, 10:33 Go to last post

  12. Current Transducer Test Rig - Doubts

    Started by japasetelagoas, 19th June 2019 00:42
    • Replies: 1
    • Views: 188
    Easy peasy
    19th June 2019, 02:38 Go to last post

  13. How to move metal elements via magnetic waves?

    Started by mowpsi, 6th June 2019 23:20
    1 Attachment(s)
    • Replies: 8
    • Views: 531
    kripacharya
    17th June 2019, 21:46 Go to last post

  14. Help required for ST7920 GLCD with Arduino GLCD

    Started by chi239, 17th June 2019 07:52
    • Replies: 0
    • Views: 173
    chi239
    17th June 2019, 07:52 Go to last post

  15. Led project. Led on at nightime.

    Started by Wynge, 9th June 2019 20:14
    1 Attachment(s)
    • Replies: 14
    • Views: 900
    kripacharya
    16th June 2019, 05:35 Go to last post

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

    Started by nanomess, 13th June 2019 21:45
    1 Attachment(s)
    • Replies: 2
    • Views: 381
    nanomess
    14th June 2019, 01:10 Go to last post

  17. heat shrink tubing over heat shrink tubing

    Started by csdave, 13th June 2019 14:58
    • Replies: 7
    • Views: 399
    dick_freebird
    13th June 2019, 19:16 Go to last post

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

    Started by sajsaj220, 13th June 2019 13:08
    1 Attachment(s)
    • Replies: 2
    • Views: 226
    KlausST
    13th June 2019, 18:22 Go to last post

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

    Started by Suppress, 11th June 2019 07:05
    2 Attachment(s)
    • Replies: 9
    • Views: 596
    betwixt
    13th June 2019, 08:28 Go to last post

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

    Started by sajsaj220, 12th June 2019 08:02
    1 Attachment(s)
    • Replies: 6
    • Views: 350
    FvM
    12th June 2019, 21:37 Go to last post

  21. using a crankshaft position sensor to implement electronic ignition

    Started by Build-A-Burger, 8th June 2019 19:00
    • Replies: 1
    • Views: 218
    dick_freebird
    8th June 2019, 19:43 Go to last post

  22. whats the waveform icon on multi-meter

    Started by Javid.zare.s, 5th June 2019 22:44
    4 Attachment(s)
    • Replies: 6
    • Views: 455
    wwfeldman
    8th June 2019, 04:10 Go to last post

  23. [moved] connector / terminal block

    Started by michael1834, 7th June 2019 14:25
    1 Attachment(s)
    • Replies: 1
    • Views: 167
    KlausST
    7th June 2019, 14:48 Go to last post

  24. simple proximity sensor, help needed

    Started by Javid.zare.s, 4th June 2019 23:51
    1 Attachment(s)
    • Replies: 5
    • Views: 415
    betwixt
    6th June 2019, 08:55 Go to last post

  25. Driving a buzzer using a transistor

    Started by hobbyiclearner, 16th May 2019 19:44
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 32
    • Views: 4,841
    Nik_2213
    3rd June 2019, 16:09 Go to last post

  26. Differential pressure sensor

    Started by hemnath, 24th May 2019 13:49
    • Replies: 5
    • Views: 681
    FvM
    25th May 2019, 09:54 Go to last post

  27. [SOLVED] Solder dots on PCB traces

    Started by Milhouse11, 24th May 2019 03:31
    1 Attachment(s)
    • Replies: 7
    • Views: 734
    Milhouse11
    24th May 2019, 15:52 Go to last post

  28. Question about transmitter

    Started by ljp2706, 22nd May 2019 04:21
    • Replies: 7
    • Views: 809
    kripacharya
    23rd May 2019, 22:06 Go to last post

  29. Attract fish by sound, light or anything else

    Started by i3layli, 22nd May 2019 12:00
    • Replies: 4
    • Views: 489
    Kajunbee
    23rd May 2019, 04:40 Go to last post

  30. dc to ac coverter circuit not working

    Started by Javid.zare.s, 16th May 2019 23:08
    1 Attachment(s)
    • Replies: 7
    • Views: 1,107
    Easy peasy
    22nd May 2019, 22:30 Go to last post
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