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  1. C

    Why I prefer electronics to plumbing

    Well, kinda... i don't like the mess coin cell batteries and capacitors make after exploding lol
  2. C

    12V, 200Ah Battery with Inverter

    12 up to 110 down to 12 again does not compute
  3. C

    Got a 2n2222 npn?

    Although stepping up the voltage might be required, i should try it at 11.8v
  4. C

    Got a 2n2222 npn?

    Want one of the worlds simplest oscillators? Here's the end result, it's got three interesting features.. 1. It's an exploit of this type of transistor, as it should not really work 2. Current is really quite low even though i used a 1000uf 16v cap only a few ma no more than 1 - 5ma, this...
  5. C

    12v variable 555 timer circuit with motor

    The second issue is the 1M resistor with only a 10k potentiometer , that's going to be a very slow pulse with 220uf it might not even trigger the 555
  6. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    The good news is i redesigned your circuit to do what you asked The bad news, unless you switch to two leds in series to reduce the voltage drop, you're simply not going to get the current needed for 20ma So i used a higher voltage, will that be a problem? If so you can only use 2 leds in...
  7. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    Found your circuit, let me take a look!
  8. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    Yeah the circuits are shareable, but android launches the browser and not the app (he needs an intent filter)
  9. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    Make the circuit public, i'll load it up and take a look, your usernane is the same as here? (@cjdelphi into the search box to find my circuits) I'll modify it to make it do what you need
  10. C

    120/240ac Triac Dimmer

    If you read my post correctly you'd see my reasons for NOT using the arduino dimmer circuit I stated that a traditional TRIAC / diac / pot combo is fine to use, even though as you said led bulbs can now dim probably using some method, either before or after stepping down the voltage This was...
  11. C

    120/240ac Triac Dimmer

    What? I posted a link to a mc controlled 240vac dimmer circuit, are you claiming it's easier to build a mc dimmer (live mains voltage on the pcb)for every led "bulb" in your house??? That's somehow safer?
  12. C

    120/240ac Triac Dimmer

    Because cheap 240ac led bulbs are safer to run on low voltage by removing the led board and hooking up low voltage to control the leds to make it dim, rather than control 240v to make it dim .. Just look at the link i posted, that's somehow safer ?
  13. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    Better to take a screenshot, make your circuit public, so others can help you, from my mobile i can't view your circuit as it loads the browser version
  14. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    That's because lower the voltage the less saturated and less current flows from base to emitter allowing more current to flow from collector to emitter... EveryCircuit is a good learning aid (Limit the current via a 1k resistor to base)
  15. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    What does not make sense?
  16. C

    Microwave movement detector module

    Brick walls?
  17. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    You only have 1 transistor, there's simply not enough current flowing, add 2 transistors like in the schematic i posted, copy the darlington pair
  18. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    It is right yes You need to place the leds between the 6v rail to the collector of the transistor exactly like the way i did it in my circuit i posted
  19. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    Including diode drop, it has to be more than 7k, anyway you'll see
  20. C

    Flickering flame simulation with PIR motion sensor - mostly need help with transistor, I think

    I just recall seeing 3volts mentioned after calculating it with 5v
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