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  1. kellys_eye

    Component identification

    ChatGPT Bots can't do that anyway.
  2. kellys_eye

    NASA MARINE ST50 TRIDATA

    Probably the sender unit rather than the display.
  3. kellys_eye

    Cutting stick on LED strips

    It will affect the current draw - shorter sections, lower current etc - but the cut strips will all operate exactly the same regardless of their cut length.
  4. kellys_eye

    Trail cam

    The case appears to have suffered some physical damaged (dropped?) which may now be manifesting as issues with other electro-mechanical components such as the switches inside it. Show us more pics (inside etc).
  5. kellys_eye

    Inductor detached from PCB

    Seconded. A poor soldered joint may have caused a localised heating issue that could, at those currents, cause the total disconnection of the device. If there's no physical signs of heating then a manufacturing fault is the likely cause. Photo's of the issue notwithstanding!
  6. kellys_eye

    Does the antenna only increase transmitting range or can it increase reception in regards to flipper zero and the CC1101 Wireless Module?

    The purpose of an antenna is to afford some form of 'gain' to the signal regardless of the direction of energy flow i.e. transmitting or receiving. Such gain is a function of many physical aspects of the antenna design, not simply length. Antenna gain is associated with its radiation pattern...
  7. kellys_eye

    External control of existing microscope lens motors

    Many years ago I designed a focus controller for my telescope that resulted in a rotary control that directly controlled a stepper motor geared to the focus control itself and it offered microstep resolution therefore high accuracy. It's not difficult to do using dedicated stepper controller...
  8. kellys_eye

    Power supply for LED strand

    Your light strip requires 12V to work regardless of the length of the strip that may be cut from the original. Running off-cuts using 9V will work but with reduced light output. All you can do by powering 'too many' LEDs is flatten the battery quicker - just recharge it! You can't do any...
  9. kellys_eye

    DIY load for generator testing.

    If you want to save money/energy then make all your dummy loads from oil-filled radiators and carry them back into your workshop/office for the stored heat after use!
  10. kellys_eye

    My first schematic of a 2-channel relay board

    Yep
  11. kellys_eye

    DIY load for generator testing.

    Get yourself some simple heaters (start with 'tube' heaters for the lower wattage) and in a series going 100, 200, 400, 800, 1600 and 3200 watts. Switch them in/out binary fashion to get a variable load from 100 to 6300 watts in 100 watt steps.
  12. kellys_eye

    115VAC to 28VDC Converter Fried Resistor

    If it's still being used in flight then I'll bow out of this thread. Such equipment needs to be sorted professionally or replaced for safety reasons.
  13. kellys_eye

    115VAC to 28VDC Converter Fried Resistor

    Can we see a close up of this part of the board? The big resistor that burned could well have been a current limiter in case of shorts but the MOSFET and resistor would have been part of the input switching circuit that also includes the primary of the SMPS inductor as well as the flyback...
  14. kellys_eye

    Driving a LED matrix display using p5.js or similar

    Loads of examples on Youtube, such as :
  15. kellys_eye

    Maintaining constant pressure inside a volume

    It's called an air compressor (with receiver i.e. storage). The pump runs whenever it's required to in order to keep the air storage tank full and you regulate the discharge using a pressure regulator/valve. Sensors at the input/output of whatever it is you're feeding the air supply to will be...
  16. kellys_eye

    Impact activated LEDs

    Fantastic craftsmanship and I'm sure your brother would be thrilled to receive such a gift regardless of the 'fancies' you wish to add. That said, the coding shouldn't be much of an issue for some on here - and I hope they drop in to this thread to assist - but it's beyond my own skill set and...
  17. kellys_eye

    IC 8 pin (unable to identify)

    The 8-pin device looks to be a MOSFET.
  18. kellys_eye

    IC 8 pin (unable to identify)

    Try changing this capacitor - looks suspect to me:
  19. kellys_eye

    IC 8 pin (unable to identify)

    If I click your link all I get is "Sorry, this content isn't available right now".
  20. kellys_eye

    IC 8 pin (unable to identify)

    ??? "Sorry, this content isn't available right now"
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