Recent content by seanspotatobusiness

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    Addressable LED controllers controllable over WiFi

    Does anyone have a recommendation for a prebuilt/preprogrammed controller for one-wire addressable LEDs (e.g. WS2812B) for which the associated app isn't too janky?
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    Where to get LED filaments not already incorporated into light bulbs?

    Okay, thank you both.
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    Where to get LED filaments not already incorporated into light bulbs?

    I've seen some YouTube videos of people messing around with LED filaments extracted from light bulbs which use them to look like incandescent filaments. I've read comments that you can get them as just the filaments themselves, without having to break open glass bulbs but when I search all I get...
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    Densest spacing of LEDs in RGB LED strips? 144/metre?

    I've found these on eBay which are 200 LEDs/metre but they're kind of expensive and I can't find them anywhere else. They're addressable which is probably why they're so expensive. https://www.ebay.co.uk/itm/193194576715 The reason I want high-density strips is so that the individual dots of...
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    Converting incandescent flashlight to LED but for NiMH (i.e. 1.8-2.4 V)

    I have an old incandescent flashlight which uses two AA cells. I prefer to use NiMH rechargeables. I would like to replace the incandescent bulb with an LED. It does not need to be bright at all; there is no heatsinking and the flashlight is rubberised so it mustn't be so bright that heat is a...
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    Constant current ICs that provide 15-20 mA?

    I'm using the CN7511. I've only used it in one project but as far as I can tell it's playing its part fine.
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    Constant current ICs that provide 15-20 mA?

    I think that has the same problem as the DynaOhm, requiring a higher voltage than my cell will provide (and kind of wasting it?). Questionable vendors are my specialty. The cheapest I found source for: CN5611...
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    Constant current ICs that provide 15-20 mA?

    I found the AMC711X which provides 15 mA or 20 mA to upto three or four LEDs depending on which version you get and requires only an external capacitor (not sure if this is mandatory nor why they couldn't include it in the IC?). Alternatively there's the CN5711 and CN5611 which are variable from...
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    Constant current ICs that provide 15-20 mA?

    I'm looking for constant current drivers in the form of single ICs with maybe only one or two external components required that will take power from a lithium-ion battery and drive one SMD LED at 15 or 20 mA. The AMC7113 (correction: AMC7135) is kind of what I want except that it does 350 mA...
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    Review: Ultra-thin Raspberry Pi aluminum case assembly, mod & thermal test

    Re: Review: Raspberry Pi aluminum case assembly, mod & thermal test Does anyone know whether this case will fit the Raspberry Pi 3 B+ (the 1.4 GHz model, not the 3 B 1.2 GHz)? Thanks.
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    Changing PC keyboard LED indicators to neon indicators - need advice for circuit

    I have designed this circuit which reroutes the output of the inverter to a resistor when the lamps are not lit to prevent the inverter producing a very high voltage when the lamps are not lit. I actually have two circuit designs but I don't know whether one is better than the other, other than...
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    Changing PC keyboard LED indicators to neon indicators - need advice for circuit

    I want to modify my keyboard for a retro cyberpunk look and replace my LED (scroll, caps and num lock) indicators with neon indicators. I can power a neon lamp from a low voltage using a laptop CCFL inverter but I was wondering if there's any way I could power three from one inverter. They...
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    Making a flickering LED filament bulb (flame simulation) - what transistor for 60V?

    I would like to modify a bulb containing LED filaments (example image below) so that some of the filaments flicker, kind of like a flame. I intend to use flickering 3mm LEDs to control the flickering. Flickering LEDs contain a tiny IC inside the epoxy which cause them to flicker. I also want the...
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    Battery capacities voltage range

    When a company like Eneloop states that their NiMh 1.2 V battery/cell has, say, 1000 mAh capacity, do they mean from full charge to 1.0 V or 0.9 V or lower?
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    Opus BT-C3100 2.2-Comparison-New and Exchanged.

    Re: BACK TO BASICS-SIMPLE,EFFICIENT AND DURABLE! Incidentally, could anyone tell me whether this charger needs each bay to be set up individually even if you want to do the exact same thing (e.g. 200 mA charge) with four batteries/cells at the same time? Thanks.
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