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  1. CircuitMaster

    Anyone know of any microcontrollers which can communicate via radio?

    And the last link that I gave, which shows only 100 meters are used for a drone with Arduino (as the OP wants Arduino) is better? Or can he show a little thinking and maybe start from somewhere ? Not to mention this from the original post: I agree on giving a full engineering solution, however...
  2. CircuitMaster

    Anyone know of any microcontrollers which can communicate via radio?

    Did you even read what I posted? Its easy to just state my answers lack mastery. RF 315/433 MHz Transmitter-receiver Module and Arduino https://www.instructables.com/id/RF-315433-MHz-Transmitter-receiver-Module-and-Ardu/ Launch distance: 20 - 200 meters (higher voltage yields better results)...
  3. CircuitMaster

    Anyone know of any microcontrollers which can communicate via radio?

    Replace the Arduino with a PIC18 and you will get multiple pins and higher reliability. https://www.instructables.com/id/RF-315433-MHz-Transmitter-receiver-Module-and-Ardu/
  4. CircuitMaster

    Help on blown transistor please

    Its very hard to tell from the dust thats left. But given the "28VDC", you can try replacing it with 2n3055 if its an NPN transistor or 2n2955 for PNP. MOD EDIT: I urge people to consider posts by CircuitMaster with a HUGE grain of salt before ignoring them.
  5. CircuitMaster

    Weather Station

    EMC compatibility is 1 option. The other is that they are powering 2 different modules inside, but that means 2 batteries will get drained faster.
  6. CircuitMaster

    Star Shower motion button bypass

    The t trigger (T flip-flop is the same) when it receives a "5VDC" TTL voltage on its "Set" pin, it establishes its "Q" output in "5VDC" and stays that way. If it received a "5VDC" TTL voltage on its "Reset" pin, it establishes its "Q" output in "0VDC" and stays that way. If you want to switch...
  7. CircuitMaster

    panasonic sc-hc20

    It should be in the service manual. If not try "google.com". If you have the skill to measure while the audio system is running (do this at your own risk), you need to check the output of the power supply and the amp. If the output is correct, than these 2 modules are ok.
  8. CircuitMaster

    Star Shower motion button bypass

    A trigger will still do. The trigger will stay powered, because you will be activating its "set" pin. That will give a permanent 5VDC to the output of the trigger.
  9. CircuitMaster

    activate one coil in press, and the other in second press

    I know what it does, I just haven't seen this circuit. The idea is that on the press, the flip-flop will not be active if its a falling front, it has to switch at the rising front so after the press while still holding the button we have 2 x "1s". I meant to write "falling" front in the upper...
  10. CircuitMaster

    activate one coil in press, and the other in second press

    I agree. This is a good option. Can you explain a little more please? You have used the switch to activate the coil on the second press, won't that mean the "T flip flop" has to be activated on the rising front?
  11. CircuitMaster

    Light dimmer

    Or if its intentional, it might be a histerezis. Like a Schmit trigger. The idea behind it is that it turns on at voltage "4VDC" (for example) and then while decreasing it turns off at "2VDC" (for example). However this only accounts for the ON and OFF, after its switched on something else...
  12. CircuitMaster

    Having trouble getting power to heated motorcycle grips

    I am not very good at motorcycle repairs, but if you provide a circuit I might be able to help you.
  13. CircuitMaster

    Converting an existing amplifier into a subwoofer amp

    This will help you: https://www.maximintegrated.com/en/app-notes/index.mvp/id/5590 Its suggested to have a class AB amplifier, which might be possible with your circuit if you add a second part to it. By the way, how do you know that yours is a class A amplifier? Where did you take this from?
  14. CircuitMaster

    LCD replacement

    Sorry can you test the link, because it does not open for me.
  15. CircuitMaster

    hi fellow hobbyists.. ?about sensors

    Thanks, I saw a notification that my post was deleted, maybe it was on another thread.
  16. CircuitMaster

    Sending sms with microcontroller

    This should help you: https://www.theengineeringprojects.com/2015/04/send-sms-pic-microcontroller-sim900.html
  17. CircuitMaster

    LCD replacement

    This seems to be the board, but its expensive, the should be worth the same: https://www.cfcbazar.com/products/hdmi-vga-av-control-driver-board-8inch-he080ia-01d-1024768-ips-high-definition-lcd-display-for-raspberry-pi/
  18. CircuitMaster

    Simple DC-DC Boost Converter 19.50V(dc) to 20.50V(dc) and 8A for charger.

    I meant something like this: https://www.electronics-tutorials.ws/blog/variable-voltage-power-supply.html
  19. CircuitMaster

    hi fellow hobbyists.. ?about sensors

    I don't know why my post was deleted, but I had this problem when I was building the same circuit recently, so I decided to ask.
  20. CircuitMaster

    Laptop as a Playstation (PS1)

    I have bought a similar joystick before and even on the site they told me these chinese joysticks are not with very high quality. The problem that occured for me was the cable got pulled out, because there is no rubber on it to stop it from moving. But I think this should do for you...
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