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  1. MP1

    What is your favorate programing language?

    Oh, wonderful...another OS war thread....just what we need on an electronics site. Why don't you Operating system guys go to a site that is dedicated to operating systems and programming languages? (and lord knows there are way too many of them out there) This is an electronics site. MP
  2. MP1

    Soldering Station Confusion

    Hi TekNoir, If you only want to have one soldering station, a good digital iron which is adjustable is good for all occasions. A preset wattage type of iron will give different results for soldering on different materials. You will notice varying amounts of time for solder flow when using one...
  3. MP1

    RF adapters

    Have you looked on www.rfdigital.com  ? MP
  4. MP1

    Problem with CNC skipping steps

    Skipping is usually caused by load on the motors. Slowing down the speed usually helps. If I understand you correctly, you have slwoed the speed a couple of times to a lower speed and still have the skipping after a period of time. With this symptom, I would look for a reason that the motors...
  5. MP1

    Shaft Encoder

    There is a dedicated area on this site for datasheet requests. You are posting in the wrong place. MP
  6. MP1

    mp3 player from hardisk

    http://www.myplace.nu/mp3/ MP
  7. MP1

    PCB Etching Tank - Do it yourself

    My warning was about using a heater with the chemical. This causes it to change state when it gets too hot. You can etch without heat. It just takes longer. But yes, you are correct, any process that uses a chemical to dissolve metal from a substrate has a certain amount of danger built in. MP
  8. MP1

    Cheap transistor switches.

    There is no way I would use any of those circuits with a micro to switch anything. Your circuits are too elaborate and waste too many parts and too much board space. Using bipolar transistors as switches have been around for years. They are cheap, do not take up much real estate on the board and...
  9. MP1

    Solder Fumes

    I use a solder iron which is digitally controlled to the temperature you dial in. A temperature controlled solder iron does not keep you from having smoke. The smoke is caused by the flux burning. If you are using too little flux to keep away from the fumes, you are taking a chance on having a...
  10. MP1

    pH tester

    Hi Jennifer, Try this link: http://www.lce.org/equipment/phmeter/ MP
  11. MP1

    R/C toy car transmitter

    Have you looked on the www.rfdigital.com website? They have several different types of these dedicated chips and their respective data sheets. MP
  12. MP1

    PCB software

    (Perhaps this subject should be moved to the CAD forum where it belongs?) I just tried out the pad 2 pad program. Here are my comments regarding it: This is another company like ExpressPCB which gives you software so that they can make your boards. There is no feature to make a gerber file, so...
  13. MP1

    component swap

    It has been suggested in the past that this be done in the buy/sell area as it is a form of buy/sell. Both parties in a trade agree that a particular item has a certain value. They will only trade for something of equal or similar value. Once you declare a value for an item and want something...
  14. MP1

    Bias temperature sensor?

    You do not need a negative supply. All you need to do is float the ground pin on the temperature chip. Connect a couple of 1N914 diodes between the LM35 ground pin and ground. Then
  15. MP1

    Transducer digital output to analogue

    Hi John, To get any kind of range out of the unit, you would normally use two different op amps. This will allow you to have an offset adjustment and a zero adjustment if need. Not sure what kind of accuracy you need or which pressure sensor you have. I have attached a schematic below. This is...
  16. MP1

    Transducer digital output to analogue

    The LDR is just changing resistance dependent upon the amount of light. If you can measure the resistance on this device out of circuit or calculate it while it is powered, then you will only need to make the pressure switch output cause the same resistance and/or voltage changes. MP
  17. MP1

    Re: Alun's low voltage alarm

    Current spec isn't something that you program into a device. It is about what is connected to it. The data sheet says you can connect to 20 mA as a maximum. This is the maximum rating at which they no longer guarantee it to work anymore. My bench tests have provided the same results. Zeners dump...
  18. MP1

    Temp. Compensation for linear power supply

    No heat coming off the resistor or pot on mine. Again, I would like to see smartsarath's schematic. If I cannot see the schematic, my first guess is going to be ripple. MP
  19. MP1

    Re: Alun's low voltage alarm

    I have never said I do not believe a data sheet. I have also never exceeded the specs. However, when a data sheet only gives you specs on a device for 24 degree C at 1 volt and you plan to use a different voltage and run the device over the complete temperature range, there is not much use from...
  20. MP1

    Re: Alun's low voltage alarm

    audioguru, The data sheet gives a spec of 6 mA as a "minimum" guaranteed for a 1 volt reference. Typical is 16 mA. When a data sheet gives such a wide range between typical and minimum and gives no spec of a maximum, then, as a normal practice, the device requires bench testing to see what can...
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