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Recent content by edtruji

  1. E

    Replacement for remote control system featuring KeeLoq code hopping?

    I’m looking for a replacement of this product, 4Ch RF remote control system featuring KeeLoq code hopping as it appears the product is no longer being sold or manufactured. https://www.circuitspecialists.com/rxd4140-434.html Any ideas? It doesn’t have to be 4 channels can be 2 channels only.
  2. E

    UNL2003AN Ground output

    @albert22 :-D The nor gate worked perfect. You're awesome. Going to work with a NOT Gate 7404 (74HC14 7414 IC HEX SCHMITT INVERTER CMOS TTL DATESHEET) which is easy for me to understand.
  3. E

    UNL2003AN Ground output

    Maybe what I need is a NPN transistor? But which one, that can handle 5V 9A? How can I add a NOT gate to the D3 output:?:
  4. E

    UNL2003AN Ground output

    @albert22 Yes I'm using the 4 outputs of RXD4. RXD4 D3 OUTPUT -> UNL PIN 1 RXD4 D2 OUTPUT -> UNL PIN 2 RXD4 D1 OUTPUT -> UNL PIN 3 RXD4 D0 OUTPUT -> UNL PIN 4 can use the remaining 3 circuits of the uln as inverters as chuckey said? How? @chukie uln 2003 pin 8 gets its input from pin 1, where...
  5. E

    UNL2003AN Ground output

    I'm working with ULN2003AN (DATASHEET), I'm attaching the ULN2003An to a board call the RXD4 (Board Specifications)., RXD4 come with 2 wireless beepers. PIN#1 from UNL2003AN solder to PIN#D3 from RXD4. D3 output 5V 9A when I press the beeper button. What I need is that when I press the beeper...
  6. E

    RF Receiver, press the button and stop voltage flow

    That would be nice, but I don't design or create the PT2272-M4 (IC).
  7. E

    RF Receiver, press the button and stop voltage flow

    Nop what I need is a : Momentary DIP (SO) = In which each channel power OFF temporary, only if transmitter button is held down. Power OFF temporary, not ON. The PT2272-M4 power ON temporary
  8. E

    RF Receiver, press the button and stop voltage flow

    I know someone do this using **broken link removed** http://www.ti.com/lit/ds/symlink/uln2003a.pdf But I can't find this circuit online :( . Just in one place and they don't ship to my country http://www.circuitspecialists.com/rxd4140-434.html Le me see if I understand well : :-D IF I...
  9. E

    RF Receiver, press the button and stop voltage flow

    The NT-R06A is using a PT2272-M4 decoder circuit.
  10. E

    RF Receiver, press the button and stop voltage flow

    I buy this circuit online: NT-R06A RF Receiver When I press the button in the remote control, it will send the switching voltage to the corresponding Output, for example D0. I would like to know if there is a way in which I can always send the switching voltage to the Output, and then when...
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