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  1. Electro132

    G'Day from Australia!

    Hi Michael and welcome to the community Cheers
  2. Electro132

    How to move up/down the frequency wavelength

    Well i have this oscillator software (which i would like to learn more about waveforms on) that picks up sounds and other frequencies (pretty much like a music synthesizer) and i would like to try altering the waveform of something (e.g. AM, FM) using log pots to make them long/short and...
  3. Electro132

    How to move up/down the frequency wavelength

    Hi, I am usually asking for help in my circuits but today, i would like to ask you all for help in understanding how to move up and down the frequency wavelength chart. I know that having an LC Tank circuit will define where i am on the chart and also with a tuner i can narrow down the...
  4. Electro132

    Adjust the range of Transmitter

    There is a way to increase the range and that depends on how far you want to go. For e.g. Satellite Communications or FM Radio.
  5. Electro132

    Three lead Solar Cell?

    Ah yes, i would have to agree. Cheap solar lamps come with cheap components. By the way, how did you go with the experiment?
  6. Electro132

    Audio or Video Transmitter

    I think understanding how the components make the TX/RX is way cooler. And besides, i learn a little about how HD/HQ video transmission works on a circuit level. How would i be able to make better HQ video with the circuit? Is there a component i need to add? I was only going to do a small...
  7. Electro132

    Audio or Video Transmitter

    Ok, sorry for the delay of response but here are my answers: 1) I want to achieve video surveillance 2) I'm intending on receiving it on a receiver which can present the audio and video on a TV screen in HD 3) How does it determine the complexity of the transmitter? i thought receivers should...
  8. Electro132

    Three lead Solar Cell?

    Ah i see, i actually chopped up an old solar calculator and found that it generated about 2 volts with both the solar cell and battery combined. The only thing different is that there were 3 wires - red, black and black. Red and black was connected to the battery whilst the other black one was...
  9. Electro132

    Audio or Video Transmitter

    Hi, I am building an audio and video transmitter. So far I have a 3 stage transmitter PCB circuit which consists of a common audio emitter, RF Oscillator and RF Amplifier. However, i still need to place a log somewhere to control the amount of voltage/current flow. I wasn't sure whether i...
  10. Electro132

    Three lead Solar Cell?

    Ok so the green wire is obviously not needed to get a solar cell to work unless you wanted it to charge up a lithium ion batt or something during the day then turn the LED on at night. However, if i try 2 solar cells connected in parallel with each other (have one POS (+) from one solar cell and...
  11. Electro132

    Three lead Solar Cell?

    Cool, I have a bunch of solar cells as well that i got from old walk way solar lamps but when i opened them up they only had 2 wires - black and red. However, when i connected them together to a capacitor which lights a LED it didn't work. But there was voltage going through it (about 1.5 v)...
  12. Electro132

    Building a simple radio scanner

    Hi, I would like to build a simple scanner which has a wide range of 10 000 hz to 30 000 khz or 10 000 khz to 30 000 mhz. Is there a simple circuit? I had a look and it seems like i could go with building a receiver based on these values but not sure how. Any help is appreciated. Thanks
  13. Electro132

    Finding out what frequency i am on

    Hi, sorry for the long wait. I was on holiday. Anyways, first and foremost, i need to know how to calculate how many turns on a coil i need to achieve a certain frequency. For e.g. How many turns on a coil does it take to get 22, 000 khz? So far i've checked online and found that it didn't...
  14. Electro132

    Finding out what frequency i am on

    Well, i have 2 projects: one is about being able to digitally display the frequency being used in the LC tank circuit using LCD displays or even just using the digit numbers. With it i can distinguish where i am on the frequency chart and work my way around and the other is to understand how...
  15. Electro132

    Finding out what frequency i am on

    Hi, I am seeking to know how i could go about getting a variable inductor into my LC tank circuit, as well as what components i will be needing. I have a 6 - 30 pf trimcap for variable tuning within an lc tank circuit but found out that i could also get the coil to be fixed or variable and...
  16. Electro132

    Storing energy in Capacitors

    Just a question: Isn't it suppose to be 16V cap since i'm using 6v? I'm pretty sure using 16v is close to 12v being that it is the double amount of voltage required in case the power surpasses the 6v threshold. Although i could just use a 3v battery. Btw, the LED i'm using is white and has...
  17. Electro132

    Storing energy in Capacitors

    Hi, I am trying to store energy from a 6v battery into a capacitor to run my leds. So far i have tried a 1000 uf 16v electrolyctic capacitor and it's ok (the lights on my circuit dim after i switch off the power source). But i want my circuit to have "longer lasting batteries" similar to...
  18. Electro132

    Arduino Script for sending text messages

    Sorry Dave. I've learnt it now. Cheers
  19. Electro132

    Arduino Script for sending text messages

    Need Power for Arduino Board Hi, I want to send and receive data using a Nano Atmega 328 arduino board, an old mobile phone and power supply to my mobile phone. I need to attach a power supply somehow to my nano atmega 328 and also run a script which can transmit and receive text messages...
  20. Electro132

    Arduino Script for sending text messages

    HI, I've got a nano atmega 328 arduino board and also a 2.4 ghz transmitter which i would like to use to send out a text message to my email address. So far i've ran some scripts for the blinking lights and changed the delay on it but i would like to see if it can transmit a text message to...
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