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  1. Arouse1973

    Sketch help - 3 axis accelerometer

    Did you try my code?
  2. Arouse1973

    Sketch help - 3 axis accelerometer

    Here is some code I put together for an LCD I was messing around with. It prints the voltage on the analog pin to the LCD. My LCD was an 8*2 so you might have to change the settings at the top of the code. Hope this helps Adam /* Tutorial 5: Interfacing an HD44780 based character LCD...
  3. Arouse1973

    Sketch help - 3 axis accelerometer

    You have no scaling. You need to scale your input voltage. Like muliplying by 5/1024. Your supply voltage and resolution of the AtoD 10 bit 12 bit ...?.... Adam
  4. Arouse1973

    Transistor as a constant current source to variable DC input

    You want a constant current regulator. Adam
  5. Arouse1973

    Checking Battery rating

    Yes Alec, correct. But its the pack that has the circuit. Single cells dont as far as I am aware. But might be wrong. I only use them in qualified packs with circuits. Adam
  6. Arouse1973

    Help, Using Arduino to high current 12volts inputs and output

    Hi Keng It's not quite Christmas yet, but thanks. I don't think you can put 12Volts into the Arduino. You can obviously scale it down to say 5 Volts. And then work out your actual input voltage from that. And the arduino can't output 12 Volts either. But again you can scale this up to give your...
  7. Arouse1973

    Radio transmitter

    Hi You have to be careful doing your own circuit. It will have to comply with a standard to make sure you are not transmitting out of band and that the RF power isn't greater than is allowed by the ISM band you choose. I personally would buy an off the shelf module. Adam
  8. Arouse1973

    Checking Battery rating

    Hi Bob. The capacity claim does seem rather high, maybe their cut off voltage is lower. The highest I have used are 3400 mAh from Panasonic. The capacity is measured using a fixed load and then timing how long it takes for the battery voltage to drop to a certain level, this is normally 2.5...
  9. Arouse1973

    Beginner question: How do I let a 12v 36w current through only when a 1v signal comes from a source?

    Have a look at R272 it's located very close to the white wires, which I think is the heater output. Also have a good look for anything that looks like it got hot or has burn marks on it. Adam
  10. Arouse1973

    Radio transmitter

    Hello You can transmit on 433 MHz band and 2.54 GHz and 5.8GHz and 24.125 GHz, there are others. Your best bet is to look for a cheap 433 MHz TX and RX. I have found AM to be better for this sort of thing. Have a look at your local electronics suppliers and see what they have. Adam
  11. Arouse1973

    Introduction

    Welcome to EP. Adam
  12. Arouse1973

    Beginner question: How do I let a 12v 36w current through only when a 1v signal comes from a source?

    Hello, welcome to EP. First thing is why did the power supply fail in the first place. It is much better to try and repair the original circuit rather than feeding new power into a faulty PCB. Can we not help you try and fix the unit? Lets see some pictures of the faulty PCB first, nice clear...
  13. Arouse1973

    newbie question

    I think I may have some good news. I have found the IC on the PCB. It's either a ZE002 or ANA608, I think they are both the same. See website here: http://www.flytron.com/electronic-parts/240-ana608-solar-charge-and-led-controller.html So what you may be able to do it remove the battery...
  14. Arouse1973

    back into electronics as a hobby

    Hi Mike, you have come to the right place. Adam
  15. Arouse1973

    newbie question

    Hi Andy Yeah 100 LEDs per set seems a lot for one battery. Are these like the little lantern thingy's or a long string of LEDs. Can you take another picture of one of the sets. Thanks Adam
  16. Arouse1973

    newbie question

    Ok so I think we need to recap on what you actually need to do. And what the solution is going to be and get everyone to buy in to it I guess. Questions to answer. 1) 5 sets of lights, how many LEDs per set? I guess one LED per light also? 2) Is a timer an option for switching on the light? or...
  17. Arouse1973

    newbie question

    Yes Andy, that's why it's important to ascertain how the circuit works. Cheers Adam
  18. Arouse1973

    newbie question

    The 4 pin device might be a little booster for the LEDs? Can read any markings on the device? Adam
  19. Arouse1973

    Comparator AD790

    Hi Soran, welcome to EP What is the circuit suppose to do? It looks like the inputs are shorted. What are you connecting to the input? Adam
  20. Arouse1973

    An unidentified component

    Ok Hop's probably right if it has 4 legs. Can you see what it looks like it's connected to on the circuit. Can you take some more pictures of the circuit board? Adam
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