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Recent content by kingkongjong

  1. K

    Connecting 4 esc to one battery

    Hello How would I connect 4 escs to one battery source. The esc's are all have dean plug connectors and the battery also had a deans plug connectors. I looked on the internet and couldn't find any way to connect 4 dean male heads to one female head. So I can't connect my escs to the battery. I...
  2. K

    ESC components and battery

    Hello This is the esc I am planning on buying how do I find its datasheet. https://www.amazon.com/abcGoodefg-Brushless-Propeller-Accessories-Quadcopter/dp/B07C5KYNY7/ref=sr_1_1?ie=UTF8&qid=1544319453&sr=8-1&keywords=rc+brushless+motor+esc+servo+battery+kit+for+plane Thanks
  3. K

    ESC components and battery

    Hello I am about to buy a motor and esc kit and I had a few questions. I looked online for the escs and I noticed they don't label the escs. So I was wondering is there any way to figure out what the wires on the receiver are. I was wondering how do you know which wire is the signal wire and...
  4. K

    Capacitive sensor and Arduino

    Hello I was wondering is there any commercial capacitive sensor that interfaces with Arduino? I am not referring to touch capacitive sensor. I am referring to the capacitive sensors that detects materials like plastic, wood, paper, glass, and etc. Thank you Uddalok Biswas
  5. K

    Simulation Software for arduino

    Hi Is there a simulation software that can simulate the arduino mega with sensors and motors. The sensors I am interested in are photoresistor, TCS3200, and ultrasonic sensor and the motors are servo motors? Thanks
  6. K

    Voltage Controlled switch

    Hi I was wondering why the signal from op amp is on for a long time after it goes through the voltage controlled switch. I have attached a picture where highlighted part is the part I probe and I have attached my .asc file. Shouldn't the signal from the op amp just be moved to 4 seconds and 8...
  7. K

    [SOLVED] circuit analysis and behavior

    Hi This circuits behavior confuses me. I was wondering why does R3 have negative current. The output from the op amp is positive voltage and the led has positive current. So why does the resistor have negative current. Screen shots below will provide more details. the highlighted part is the...
  8. K

    LTspice transient stop time

    Hi I am analyzing a circuit with 3.98(e^-6) transient stop time. I am not sure how many seconds is 3.98(e^-6)? Also when I view the graph the time unit is us not sure what us stands for. I would appreciate any help. Thanks
  9. K

    [SOLVED] Capacitors loop circiut

    Hi Thanks for your feed back. One of the posts answered my question so this is solved. Thanks
  10. K

    [SOLVED] Capacitors loop circiut

    Hi What I mean is could you have a circuit like this. Thanks
  11. K

    [SOLVED] Capacitors loop circiut

    Hi I looked at a bunch of capacitor schematics online and they all seem to be in loop. I was wondering do capacitors have to be in a loop circuit? Thanks
  12. K

    [SOLVED] LTspice 3rd party libraries

    Hi Does any one know if there are any ltspice 3rd party libraries for ultrasonic distance sensor, servo motor, temperature sensor, sound sensor, and light sensors like photodiodes. Basically I am looking for sensor and motor 3rd party libraries. Thanks
  13. K

    [SOLVED] ltspice hierarchical circuit error

    Hi Disregard last post. I forgot to put the test in the same directory. That is why there was an error. Thanks.
  14. K

    [SOLVED] ltspice hierarchical circuit error

    Hi Okay the circuit in post 5 works. Please explain what you did so I know what to do in the future. Thanks
  15. K

    [SOLVED] ltspice hierarchical circuit error

    Hi If you look at the second picture of the first post you will see the symbol is mapped to a circuit. I am not sure how to make the circuit import the memory symbol. I just followed the steps for creating a hierarchical block. The error says missing schematic of hierarchy. Not sure why it is...

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