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  1. kellys_eye

    Trolling

    Open discussion. At what point in time do we (as a forum) make a decision that a contributor is just here to troll the forum? How many posts do we allow before we send the OP off to 'contemplate their ways' and, if they can't, don't/won't repair their ways, ban them permanently? I realise the...
  2. kellys_eye

    Chinese diesel heaters

    Anyone (else) got one? I'd been following these devices on the tube for a while and the general consensus was always positive so I recently took the plunge and got one for myself. This was prompted by an opportunistic purchase of a heating oil tank plus 1000 litres of oil for the measly sum of...
  3. kellys_eye

    Artificial Intelligence

    Are you worried? Do you believe the scaremongering of imminent human demise if AI gets its way? What on earth is the reality behind it all? Open forum discussion anyone?
  4. kellys_eye

    Yaesu FT75 manual/schematic required

    As per the title - anyone got one or anyone know where I can download one? The FT75B is readily available but the FT75 is an earlier model radio with significant differences that make the FT75B document 'difficult' to use. This is the unit mentioned: https://www.rigpix.com/yaesu/ft75.htm TIA
  5. kellys_eye

    Block Cameras (CCTV)

    I now have a growing collection of these CCTV block cameras as attached pic.... These are currently being used for experimentation including direct access control, replacing the sensor elements for high(er) resolution and total reworking for individual purposes. What I'd love to have is access...
  6. kellys_eye

    'nuther thing....

    Not sure if something lie the following exists but if it does can someone point me to it - and if it doesn't can someone develop it so they can make a fortune???? I'd like to have a mouse facility (right-click) that allowed me to choose what I wanted to do with whatever it was I click'n'dragged...
  7. kellys_eye

    What's 'fast enough'?

    After what seems a lifetime (certainly 14 years I know of) our property is about to go fibre-to-the home. We started out with 2Mb (copper) and lived with that for over 12 years and that included running a business but we managed. A recent mobile phone mast fitment in our village gave us ~50Mb...
  8. kellys_eye

    Camera Modules

    I now have a collection of PTZ cameras (old style - 540 line, PAL, 26x mechanical zoom etc) - five fully operational domes and the same number of dome 'internals' that comprise the main control/connection boards and what are known as 'camera modules'. These modules are self-contained...
  9. kellys_eye

    Paralleling microSD cards

    Has anyone ever parallel-connected multiple micro-SD cards? If so, what technique/results did you get? Can you parallel the data lines and switch the power lines 'as required' or do the data lines need isolating bi-directional buffers?
  10. kellys_eye

    Portable Computers

    Years ago, portable computers were called PDA's (Personal Digital Assistants) and the best you could get was, by today's comparative market, very poorly powered and had a screen of VGA quality at best. I realise that mobile phones have taken their place (let's not discuss tablet PCs here - bear...
  11. kellys_eye

    CCTV cameras

    Before going any further I suppose I'd better ask - are there any CCTV-savvy people here or should I be going to a 'dedicated site'? Anyway, the question is going to be related to some pan/tilt Sony cameras I've been given. They have a multi-core cable along with the usual coax (video) and...
  12. kellys_eye

    ISA sockets

    anyone know where I can get an ISA socket from? I've tried all the usual suppliers but with zero results. I'll take new, used or salvaged. I'm knocking up an old PC/104-to-ISA adapter and can't source an old ISA socket for love nor (so far) money...... If you've got an old riser card or mobo...
  13. kellys_eye

    Bloody cats!

    We have four. All spoiled rotten. One youngster (just passed his 1st year) went missing a couple of days ago and we 'found' him 60ft up a 100ft tree...... chasing bats. We were a few hours from either getting the Fire Brigade to bring him down (we know the firemen and they like to exercise...
  14. kellys_eye

    I never knew.....

    ... that 'manufactured' pcb's could be so cheap and such high quality. Yeah, Mr Luddite speaking...:p or Mr Behind-the-times anyway.... I was browsing Youtube when I clicked on someones instructions for getting a pcb manufactured via JLRPCB (or something like that, could be wrong on the name)...
  15. kellys_eye

    Useful download

    Got an email from Rohde & Schwarz today with an offer for a free download copy of Worldwide Spectrum Allocation Chart - requires registering your details bit US/Canada residents may be in line for a free printed copy - and it's just under 7Mb (pdf). 1kHz to 300GHz coverage and 'interesting' to...
  16. kellys_eye

    Quiz Time

    Here's something that's puzzling me and I'm hoping for some feedback from members that can help. I have an unknown device (marked as 630 341, it's an SOIC format but about 4mm high) that is configured as shown below. I've assumed the input and output status (it may be reversed but I think it's...
  17. kellys_eye

    Just an idea - maybe it already exists?

    I was contemplating designing a parametric search program to help identify semiconductors but wondered if anyone knew of something 'out there' that already did what I envisage? The idea is to use drop down menus to select #pins, package type (from images), manufacturers symbols (from images)...
  18. kellys_eye

    Too good to believe...?

    https://www.banggood.com/DSO-NANO-PRO-Handheld-Oscilloscope-2_4-Inch-IPS-Screen-30MHz-Bandwidth-200M-Sampling-Rate-p-1332155.html?utm_design=39&utm_source=emarsys&utm_medium=Mail_mid160_email&utm_campaign=newsletter%E2%80%94emarsys&utm_content=leander&sc_src=email_3146655&sc_eh=c782c2d7f556aade1&...
  19. kellys_eye

    Motor peculiarity

    I have a permanent magnet 12V motor that simply refuses to take current! I can stall it at 8A but an identical motor draws 30A+ under stall conditions - yet I cannot see or find anything wrong with the '8A' motor..... New brushes, no damaged rotor windings (that I can see or measure anyway)...
  20. kellys_eye

    Got any ideas for using an old fridge?

    Due to a crappy company selling me a large (550 litre) storage freezer then 'going bust' and not honouring the warranty (it's now defective) I'm the 'proud' owner of a large storage freezer that doesn't work and is BER. It's going to be a PITA to dispose of (I have to take the door/frame off...
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