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  1. Arouse1973

    transformer identification from Crosley director model CR2405C stereo

    And here is one of our lovely mods now. :) Adam
  2. Arouse1973

    transformer identification from Crosley director model CR2405C stereo

    Thanks Dave Adam
  3. Arouse1973

    Troubleshooting Arduino + Heart Pulse Sensor Circuit

    No, servos need PWM to work. You will need someone to help you with the code. I am not a software engineer and can only help you with the electronics and any EMC issues you may have. Adam
  4. Arouse1973

    Troubleshooting Arduino + Heart Pulse Sensor Circuit

    If you have 5 Volts going to the output of the regulator from the control board and you don't have 12 volts connected to the input of the regulator then you could get voltage feedback onto the 12 Volt line. Adam
  5. Arouse1973

    Troubleshooting Arduino + Heart Pulse Sensor Circuit

    Can you amend the code so you fake a sensor input? This will allow you to test the MOSFETS. You shouldn't fry your sensors if you have the correct voltage an polarity connected to them. Adam
  6. Arouse1973

    reflowing a board

    I personally would do the following. Get a small soldering iron about 18W will be fine some leaded 60/40 solder with built in flux. Get some solder wick and do the following. Re-solder the joint and then apply a small amount of solder to the iron tip and place the wick onto the same solder...
  7. Arouse1973

    Microcontroller controlled by pushbutton for LED flashlight

    I agree to some respect but what's the quality of the capacitor? also I have experienced PCB contamination that you can't even see put pay to this. I like the idea but personally it's a no no from me. FWIW Thanks Adam
  8. Arouse1973

    Transformer smoked

    We have one of the metal encased types and it's 24 Volts D.C. Current draw is about 500 mA. Thanks Adam
  9. Arouse1973

    Need one bit of old circuit board

    Yeah me too! got me intrigued. Adam
  10. Arouse1973

    Microcontroller controlled by pushbutton for LED flashlight

    Some pics allow the port to be in a disconnect mode but not sure about this PIC. If not I think this could actually make things worse, the pin could float and be in an indeterminate state drawing more current. It is better to either make it an A/D if possible or an output low, so if the...
  11. Arouse1973

    Not getting the ideal 555 output

    Yes Colin is right, but I wanted to go through each stage separately. First get the 555 timer working as it should then move backward. Take a step at a time. Adam
  12. Arouse1973

    transformer identification from Crosley director model CR2405C stereo

    Hello Banjomaniac Your better off carrying on with the thread Martin pointed to, it will just confuse people. One of our lovely moderators will move this for you. Adam
  13. Arouse1973

    Wanted: D-SUB 90 Degree Backshell

    I think they are quite expensive connectors in general. I think you just resister with them? Adam
  14. Arouse1973

    Not getting the ideal 555 output

    Sorry I got very long arms and have to sit 6 feet away from the monitor. Looked the right size to me :)
  15. Arouse1973

    Wanted: D-SUB 90 Degree Backshell

    Any use? http://www.digikey.com/product-search/en?pv88=27&pv295=2&FV=fff40016%2Cfff80395&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25 Adam
  16. Arouse1973

    Wanted: D-SUB 90 Degree Backshell

    Hello Is that metal or plated plastic? Adam
  17. Arouse1973

    Could use some experts insight into identifying connector type.

    Could be these bad boys? http://www.molex.com/molex/products/datasheet.jsp?part=active/5019203001_PCB_HEADERS.xml Adam
  18. Arouse1973

    HELP IN LIGHT TRACKING CIRCUIT.

    Can you post a circuit diagram please ASAP. Thanks Adam
  19. Arouse1973

    Not getting the ideal 555 output

    Here is a modified circuit that shows the principle. See if you can include this in your design. R3 and C3 provide a small power up delay which then turns on the transistors T1 and T2. This then produces a small active low pulse which triggers the 555 timer. The output then goes high for approx...
  20. Arouse1973

    Not getting the ideal 555 output

    I think you have two problems. First is that you need to provide a small amount of settling time for the circuit. The second is that I think if you hold down the trigger terminal of the timer the output will stay high. The trigger pulse needs to be shorter than the output pulse. You could have a...
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