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  1. OLIVE2222

    how to make buzzer only beep once.

    Yep that's it , few rewiring needed :o be strong !
  2. OLIVE2222

    how to make buzzer only beep once.

    Hi Doug, The pin 16 is not connected, must be + I will check the rest. Olivier
  3. OLIVE2222

    Testing a camera module

    Hi, Normally those small camera are composite video type. Red is + Black is negative White is video You can connect it to any video input (generally a yellow cinch connector). Olivier
  4. OLIVE2222

    how to make buzzer only beep once.

    Hi Doug, Yes I confirm the pin's connection and add pin 16 go to + please post sharp pictures of top and bottom of your bread board. BC548 is fine. Olivier
  5. OLIVE2222

    Possible to up Amperage of a 12V 500mA wall wart?

    connect it (with the loudspeakers) and measure the amps is a good suggestion !
  6. OLIVE2222

    Possible to up Amperage of a 12V 500mA wall wart?

    No in power supplies all component are dimensioned for the rated power, none can be reused to go to 10A from 0.5A a linear power is the easier to build (doesn't mean cheap) Olivier
  7. OLIVE2222

    Possible to up Amperage of a 12V 500mA wall wart?

    10 amps is a super maximum, rated for full audio power. Anyway you probably still need something in th 5 amps range which don't exist in the wall wart style. You must go for supplies like used for CB transceiver. sadly it's not a financial viable option, as "decent" stereo should be available...
  8. OLIVE2222

    Possible to up Amperage of a 12V 500mA wall wart?

    Hi Steinklatre, 500mA seems not enough for a car stereo. Are they any indication on the car stereo, or a fuse in the supply line to estimate the needed current ? If not can you carefully connect it to a car battery and measure this current? Olivier
  9. OLIVE2222

    Help with DS18S20 Dual Temperature Meter

    mtb54703, Don' worry about resistor values, they are tolerance applied, having 0.997 K is OK. I am not a Microchip guru but to me the circuit lack a pull-up resistor on reset pin (4), 10K to +5V will be OK, can you try that? Olivier
  10. OLIVE2222

    Headphone amp circuit

    Hi Vinod, Yes it will be OK for 32ohms load. The higher the load impedance the easier for the amplifier. Olivier
  11. OLIVE2222

    Adding RGB scart to a Sega Master System.

    Hi NeilTheDruid, The RGB levels (as viewed by the TV)will be halved due to the two 75ohms resistors. What it can be done is to build a small sync extractor based on an lm1881 (just google a bit). Olivier
  12. OLIVE2222

    Headphone amp circuit

    Hi, Also they are no difference between audio amplifier and headphone amplifier. It's the available output power which determine the usage, so your query can be wider.The TBA820M it's a popular 1watt audio amplifier you can use. Olivier
  13. OLIVE2222

    High- Voltage Adjustable Regulator

    Hi, yes having two 1:2 will be OK but the rectified voltage will be quite high: (2X230)X1.41=~650 Volts, the 1:1 + 1:2 combination should better match (110+230)X1.41 ~480 Volts. Olivier
  14. OLIVE2222

    Help with DS18S20 Dual Temperature Meter

    Hi mtb54703, Sensors looks to be correctly wired. Can you post a solder side picture? Olivier
  15. OLIVE2222

    Is there 0.01 rpm motor?

    Hi Rover233! Well, geared motors should be available in many flavors, including very low RPM. also Stepping motors allow you any RPM! Any application in mind? Olivier
  16. OLIVE2222

    Which Multimeter

    Sure Dave having kids it' s something very enjoyable and indeed they must have the priority !! Hope you can offer you the stuff you want in a close future, Fluke will stay in the business for a long time anyway ! :) Olivier
  17. OLIVE2222

    Which Multimeter

    Hi, This is a range of Fluke multimeter targeted for the Chinese market (and not supposed to be exported). http://www.ebay.co.uk/itm/FLUKE-15B-F15B-F-Auto-Range-Digital-Multimeter-Meter-/300556769790?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item45fa9459fe Not that...
  18. OLIVE2222

    DIY Wii Peripheral, anybody have experience?

    Hi muse7789! The PCF8591 is a popular A/D converter. You can connect your pot(s) analog or accelerometers on it. With voltage dividers it can also be used for switches. Sure you need a piece of code. Maybe Darwiin Remote have a list of supported I2C devices, if so just tell us and I will have...
  19. OLIVE2222

    Which Multimeter

    Hi lapistola, I will not have a decision based on the transistor tester availability. it' s just a nice to have, if you can offer you a Fluke, even an entry level one go ahead you will not be disappointed. You can build a small transistor checker apart. Olivier
  20. OLIVE2222

    What is this element?

    Hi Antonio333, It' s probaly an inductor (looks as low R with a multimeter). Olivier
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