Search results

  1. Stoneww

    Need help with a multiplexer

    Okay thanks, I think Will switch to the one you first suggested
  2. Stoneww

    Need help with a multiplexer

    Ye looks good, you think this can also be the case for the MUX I used?
  3. Stoneww

    Need help with a multiplexer

    Also that one requires VDD, VEE and VCC. And with a battery powered I can't really provide negative voltage.
  4. Stoneww

    Need help with a multiplexer

    TCRT 5000 sensors, they will output between 0 and 5 volts.
  5. Stoneww

    Need help with a multiplexer

    Hey, I have a project and I want to use a multiplexer to periodically switch between 5 different inputs (analog) to be output one by one, the output will be fed to a microcontroller. The same microcontroller is used to signal which input should be output. NOTE: the voltages read by the mux will...
  6. Stoneww

    Measuring Current via voltage measurement

    Hey I am doing a project using the TCRT5000 which is a phototranistor with an IR LED. I need to measure the current through the transistor. We get told to add a resistor and measure the voltage accross it using a voltmeter (and then I= V/R) instead of measuring current directly using a ammeter...
  7. Stoneww

    Making a FM transmitter

    Just finished my first year at university and I wanted to try to learn something new but I think I went into a project that is too advanced for my knowledge, but I will try the approach of ripping things out.
  8. Stoneww

    Making a FM transmitter

    Thank you for the feedback but even with the new circuit I struggle to see why some components are in place, From what I understand: (correct me if I'm wrong) Analogue signal from MIC1 which is then cleaned out by the decoupling capacitor C1, R2 and R6 is a potential divider to raise the...
  9. Stoneww

    Making a FM transmitter

    Hey, I've been trying to make a transmitter but I've been struggling to read circuits. So could someone please explain this circuit to me and then maybe tell me how they go about reading circuits. Thank you I know little parts of it but others I have no clue why components are there or what...
  10. Stoneww

    Bi-directional Motor with speed control circuit

    I've managed to get it working perfectly with relays. I want to attempt the project using a H-channel, us there any advantage of using a H-channel over a relay configuration?
  11. Stoneww

    Bi-directional Motor with speed control circuit

    Hello I'm trying to make a circuit to make a motor spin in both directions and so that I can alter its speed. >The blue rectangle is the part of the circuit for the bi-directional control. The blue rectangle circuit works prefect on its own >The green rectangle circuit is used to alter the...
  12. Stoneww

    Determining LED values

    Thanks man really helpful sadly I don't think my multimeter has the forward voltage setting because it only cost me like £6
  13. Stoneww

    Determining LED values

    I'm just curious if there is a way to get the LED threshold voltage, or the current rating from any other way than checking the manufacture's datasheet.
  14. Stoneww

    RC Car

    If anyone has an idea of how I could make an Radio controlled car I'd really appreciate it. I can't find any good guides & I tried doing it myself coding it with arduino UNO but it didn't work as intended. So maybe: Block diagram Things I need General Idea of how the code will look. ( Mine...
  15. Stoneww

    Choosing a transistor

    oh right I better get learning all this then and start reading, do you have any suggestions on what is good to read?
  16. Stoneww

    Arduino motor controller ( To be)

    I've been trying to make a motor control circuit with PWM. The end goal is to have a working buggy. Now my problem lies within the fact that the frequency of these LEDs when they are powered is pretty low, I don't have a tool to measure it but I can see the LEDs clearly flashing. The...
  17. Stoneww

    Choosing a transistor

    We just literally get taught how a basic competent works, we don't look at datasheets what so ever. And by college I mean pre-university like ages 17-18 so I assume there will be looking at datasheets at university.
  18. Stoneww

    Choosing a transistor

    I'm never sure which transistor to use. I cannot seem to make sense of the datasheets as they're too intimating. So could someone please inform me when to use which transistor or when it's better to use a MOSFET & for these examples: >3V LED >5V Motor I just need to know what is important in...
  19. Stoneww

    Basics of IF and Else statements (Arduino)

    Thank you so much :):)
  20. Stoneww

    Basics of IF and Else statements (Arduino)

    ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ void setup() { pinMode(10, OUTPUT); pinMode(2, OUTPUT); pinMode(12, INPUT); pinMode(A0, INPUT); } void loop() {...
Top