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  1. 0

    More current to stepper motor

    US seller: https://www.ebay.com/itm/L298N-Motor-Drive-Controller-Board-Module-Dual-H-Bridge-DC-for-Arduino/191457497948?epid=1042147680&hash=item2c93c1935c:g:W8AAAOSwg3FUl-z3
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    Power Transisor for Lutron PD-3PCL Remote Switch

    Here's a shot of the transistor. And one of the circuit board it goes in.
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    Power Transisor for Lutron PD-3PCL Remote Switch

    Like the header says, its a Lutron PD-3PCL remote switch. https://www.amazon.com/Lutron-Caseta-HomeKit-Assistant-PD-3PCL-WH/dp/B00KHSXB60?psc=1&SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-d-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00KHSXB60 I'll get a couple of pictures.
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    Power Transisor for Lutron PD-3PCL Remote Switch

    Could use some help identifying a transistor. I've searched Mouser & Digikey and came up with nothing so I'm guessing it's not very common. I'm also inclined to think it should be reasonably easy to come up with a substitute if a person knew what they were doing. I don't. These are the...
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    Weather Station

    I do have it figured out. Sort of. As I mentioned earlier, the unit is not running on 6v. It runs on 3v. The goofy wiring is what started this thread. Still not sure why they did it that way. The voltage regulator didn't work out like I hoped but I had a step down converter on hand and it...
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    Weather Station

    Well I got some time to get back to this project. Here's the picture someone wanted: I believe the two SS12's are diodes that were mentioned. Turns out the solution is incredibly simple. Run 3v to either hot lead and it's happy. You can take two of the batteries out of either side and it...
  7. 0

    Weather Station

    This is the unit: https://www.acurite.com/pro-5-in-1-weather-station-with-hd-display.html Let me re-frame the question. If I run my 7.4v battery pack through the before mentioned voltage regulator, am I likely to do damage?
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    Weather Station

    Yes, I'm quite sure it's correct. It looked odd the way the batteries were arraigned so I checked the path with a VOM. I still didn't quite get it so I took it apart. They run two red positive wires up from the battery compartment but connect the negative together and run a single black wire...
  9. 0

    Weather Station

    I bought a weather station with the intent of putting the 5 in 1 sensor array on the roof. The sensor array requires 4 AA cells which I really don't want to be climbing up on the roof to change. I figured I'd just find out what voltage it uses and run a wire down and plug in a 7.4v lipo pack...
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    Resistor value

    Done.
  11. 0

    Resistor value

    Correct. I had no idea the values could be so broad. I wish the spec sheets would make it a bit simpler for us non-electrical engineers. The first thing any led needs is that resistor. How hard would it be to put an ideal forward current & voltage right at the top for those of us that have...
  12. 0

    Resistor value

    My Snippit tool decided to take a vacation so I copied this from the Electrical Characteristics Table: Input Characteristics Input Control Current to Activate 3 IL=100mA IF - 0.4 1 mA Input Control Current to Deactivate - IF 0.3 - - mA Input Voltage Drop IF=5mA VF 0.9 1.2 1.5 V Reverse Input...
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    Resistor value

    Thanks Minder, So how does a person go about picking the right values out of the spec sheet? I did finally find the input voltage drop on the spec sheet: .9 min, 1.2 typ and 1.5 max. That's pretty cut and dry. I don't get the 'Input Control Current to Activate' at all. First the sheet lists...
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    Resistor value

    I'm trying to decide on a resistor value to use with some cpc1017n opto relays. The datasheet is here: http://www.ixysic.com/home/pdfs.nsf/www/CPC1017N.pdf/$file/CPC1017N.pdf It specs it at 50ma but I don't see a voltage. Some eBay listings give the voltage as 1.4 but that seems a bit out of...
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    RCA 832 81803

    As much as I hate throwing something away, I think it's time to retire this antique and put together a new controller. Thanks for taking a look at it.
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    RCA 832 81803

    Can anyone help me identify this IC? It's 14 pin. The first line says RCA 832 and the second line says 81803. I've searched till I'm blue in the face. It's in an oven controller that I'm trying to repair.
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