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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: 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: 22,643
    Rattanee
    2nd August 2014, 19:26 Go to last post

  2. Sticky Thread Sticky: Read this before posting.

    Started by pranam77, 21st August 2009 09:14
    • Replies: 0
    • Views: 25,383
    pranam77
    21st August 2009, 09:14 Go to last post

  1. L293d - Input Voltage (motor operation)

    Started by utsavp1417, 15th October 2019 23:15
    1 Attachment(s)
    • Replies: 3
    • Views: 469
    KlausST
    16th October 2019, 22:34 Go to last post

  2. Desperate for help (computer fan control) or this could cost huge $$$

    Started by 1stFalloutBoy, 13th October 2019 04:37
    • Replies: 7
    • Views: 461
    KlausST
    14th October 2019, 07:09 Go to last post

  3. Instrumentation AMP Virtual short.

    Started by mrblueblue1234, 9th October 2019 17:41
    2 Attachment(s)
    • Replies: 5
    • Views: 724
    asdf44
    10th October 2019, 00:46 Go to last post

  4. Impedance Calculation

    Started by mrblueblue1234, 9th October 2019 01:09
    3 Attachment(s)
    • Replies: 5
    • Views: 455
    KlausST
    9th October 2019, 22:48 Go to last post

  5. "Self-Healing" 12V 30A Circuit

    Started by Nabors, 2nd October 2019 00:37
    1 Attachment(s)
    • Replies: 6
    • Views: 994
    FvM
    3rd October 2019, 11:29 Go to last post

  6. SD card - pull-ups required?

    Started by gmorfeus, 1st October 2019 10:16
    • Replies: 6
    • Views: 420
    gmorfeus
    3rd October 2019, 09:29 Go to last post

  7. Current Measure using Current Transducer

    Started by adimon, 27th September 2019 19:11
    • Replies: 2
    • Views: 276
    Easy peasy
    28th September 2019, 01:55 Go to last post

  8. problem with pcb etching

    Started by ArakelTheDragon, 25th September 2019 06:53
    • Replies: 16
    • Views: 694
    c_mitra
    27th September 2019, 23:49 Go to last post

  9. li-ion voltage reducer to 3volt - help needed

    Started by Javid.zare.s, 15th September 2019 01:20
    1 Attachment(s)
    • Replies: 8
    • Views: 740
    Pjdd
    27th September 2019, 09:32 Go to last post

  10. Another question about Holtek HT12E/HT12D pair

    Started by Mapuia, 27th September 2019 08:57
    • Replies: 0
    • Views: 115
    Mapuia
    27th September 2019, 08:57 Go to last post

  11. Change colors of liquid crystal display

    Started by RevDNS, 9th September 2019 08:51
    4 Attachment(s)
    • Replies: 7
    • Views: 807
    betwixt
    23rd September 2019, 23:14 Go to last post

  12. Portable headphone amp w. batteries

    Started by mikaelmark, 21st September 2019 14:13
    3 Attachment(s)
    • Replies: 14
    • Views: 845
    lggrover
    23rd September 2019, 06:07 Go to last post

  13. Li-ion Battery charger need help

    Started by maxim10373, 16th September 2019 06:15
    1 Attachment(s)
    • Replies: 4
    • Views: 414
    Easy peasy
    16th September 2019, 08:48 Go to last post

  14. Operating four Tx-Rx pairs in close proximity

    Started by Mapuia, 12th September 2019 16:43
    • Replies: 7
    • Views: 505
    Mapuia
    12th September 2019, 20:58 Go to last post

  15. Raspberry Pi Gameboy Project - wiring a slide switch to a PCB

    Started by matt93, 11th September 2019 18:43
    2 Attachment(s)
    • Replies: 0
    • Views: 259
    matt93
    11th September 2019, 18:43 Go to last post

  16. Testing LI Batteries with the help of a device

    Started by Prem Arjun, 10th September 2019 17:15
    • Replies: 2
    • Views: 289
    Audioguru
    11th September 2019, 03:08 Go to last post

  17. H bridge with IR2110

    Started by maimahmoud93, 10th September 2019 12:11
    2 Attachment(s)
    • Replies: 3
    • Views: 351
    BradtheRad
    11th September 2019, 01:21 Go to last post

  18. Homemade music lighting system with controller board(s)

    Started by keukenrol, 1st September 2019 18:12
    1 Attachment(s)
    • Replies: 8
    • Views: 859
    keukenrol
    9th September 2019, 12:09 Go to last post

  19. Clean power supply for RTC

    Started by pk2010, 8th September 2019 10:06
    1 Attachment(s)
    • Replies: 2
    • Views: 403
    schmitt trigger
    8th September 2019, 21:32 Go to last post

  20. [SOLVED] CD4053 connect unused pins

    Started by clros, 7th September 2019 17:02
    • Replies: 4
    • Views: 408
    schmitt trigger
    7th September 2019, 23:07 Go to last post

  21. Astable Multivibrator not switching

    Started by MacIntoshCZ, 4th September 2019 16:05
    3 Attachment(s)
    • Replies: 8
    • Views: 624
    Audioguru
    5th September 2019, 15:24 Go to last post

  22. LED headlight pcb reverse engineering

    Started by FJR1, 3rd September 2019 22:03
    4 Attachment(s)
    • Replies: 1
    • Views: 328
    betwixt
    4th September 2019, 08:52 Go to last post

  23. Two ps/2 ports and a FPGA

    Started by clros, 1st September 2019 18:48
    • Replies: 3
    • Views: 896
    clros
    2nd September 2019, 12:02 Go to last post

  24. Smartphones' Powerbank

    Started by Hunter666_444, 31st August 2019 18:29
    1 Attachment(s)
    • Replies: 7
    • Views: 690
    targoose
    2nd September 2019, 09:44 Go to last post

  25. [SOLVED] DC-DC converter to -3.3v

    Started by clros, 31st August 2019 09:30
    1 Attachment(s)
    • Replies: 4
    • Views: 579
    BradtheRad
    1st September 2019, 03:22 Go to last post

  26. BP4836 BMW Reverse RDS

    Started by TripsD, 27th August 2019 19:18
    • Replies: 8
    • Views: 703
    ads-ee
    30th August 2019, 15:59 Go to last post

  27. Designing a simple DC Massage Device

    Started by crowtor, 26th August 2019 18:49
    3 Attachment(s)
    • Replies: 5
    • Views: 810
    srizbf
    29th August 2019, 15:30 Go to last post

  28. Looking 4 collaboration: Mobile Display

    Started by Mike_wth, 28th August 2019 15:26
    • Replies: 2
    • Views: 373
    Mike_wth
    29th August 2019, 15:16 Go to last post

  29. Is this a good Oscilloscope

    Started by electronicsman, 27th August 2019 18:43
    1 Attachment(s)
    • Replies: 3
    • Views: 443
    electronicsman
    28th August 2019, 02:47 Go to last post

  30. Problem with Logitech Audio PCB (No Sound Output)

    Started by Blackdragonier, 23rd July 2019 13:14
    2 Pages •
    1 2
    8 Attachment(s)
    • Replies: 34
    • Views: 2,589
    Blackdragonier
    24th August 2019, 01:07 Go to last post
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