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  1. Arouse1973

    Help with motion sensor and motor DC

    How much current does the motor draw? What transistor are you using? You may need to lower the base resistor value. Adam
  2. Arouse1973

    Not understanding C, DC, & Z flags from my homework?

    MOVLW mean move a literal value like say 10 into the working register. And ADDLW mean adding a value to what's in the working register. So you move 10 into the working register and add 10 to it to make 20. MOVLW b'1010' ; this is 10 ADDLW b'1010' ; Add 10 to W makes 20 Thanks Adam
  3. Arouse1973

    Heating Jacket controlled by Arduino for Winter

    If the software had a bug and something caused it to lock up like an ESD event, there is a chance the output pin could assume a high level. Temp sensors are a great idea but they will only start to work when the temp reaches the set value. In a fault condition you want it to stop at once. A...
  4. Arouse1973

    Heating Jacket controlled by Arduino for Winter

    Yes heaters in series, can't see anything wrong with that. You must also consider some safety options. Temperature feedback and maybe PWM detection cut off if the PWM stops because the heaters could potentially turn fully on. Do you not think 60 degrees is a little hot? Thanks Adam
  5. Arouse1973

    Heating Jacket controlled by Arduino for Winter

    If you just want to control the energy used by the heater/s then could you use PWM to control a suitable switching device like a MOSFET or BJT? Do you have a datasheet for the heating element you plan to use? Thanks Adam
  6. Arouse1973

    Heating Jacket controlled by Arduino for Winter

    What buck boost are you using? What minimum output voltage do you need? Thanks Adam
  7. Arouse1973

    Heating Jacket controlled by Arduino for Winter

    Hello Have a look at digital potentiometers. You should be able to use one to control the feedback voltage of your buck boost. Thanks Adam
  8. Arouse1973

    Simple Motor Controller Circuit

    I have seen body diodes used for this purpose but there tends not to be much info about them. Its up to you but if it was me I would rather use a diode that I had a data sheet for and knew its limitations. With the body diode you do not have this info so I would not use it. Adam
  9. Arouse1973

    Cutoff Load while charging the Lipo battery

    It should work, but a FET might be more efficient. Adam
  10. Arouse1973

    Simple Motor Controller Circuit

    You connect the source of the P-channel to the power rail of the supply. Adam
  11. Arouse1973

    Transient Voltage question

    Yes thank-you Harald, you are correct. Also the load that is being driven maybe initialy many times the constant rating. This also needs to be taken into account. A 30 Amp fuse is for a fault condition and will pass many times that current for a very short time, but the relay contact could be...
  12. Arouse1973

    Transient Voltage question

    Hello. You would normally connect an flyback voltage suppressor across the relay coil and if needed an arc suppression circuit across the contacts. We would need more details about what relay you intend to use and what type of load it will be switching initially. Thanks Adam
  13. Arouse1973

    Simple Motor Controller Circuit

    Wouldn't a DPDT switch work? Thanks Adam
  14. Arouse1973

    Oscillating Leds circuit anywhere?

    You can buy flashing LEDs if that's of any help? Adam
  15. Arouse1973

    PWM - pic18f4550 - led + potentiometer

    Hello, what do you mean with PWM own libraries? Adam
  16. Arouse1973

    Interfacing of RAM in STM32F407ZG

    This should help. http://www.st.com/content/ccc/resource/technical/document/datasheet/ef/92/76/6d/bb/c2/4f/f7/DM00037051.pdf/files/DM00037051.pdf/jcr:content/translations/en.DM00037051.pdf
  17. Arouse1973

    Peripherals and Core peripherals

    Hey have you heard of this new website. Check it out. https://www.google.co.uk
  18. Arouse1973

    Proteus and Panelization for PCBs: Mouse Bites?

    Hello, its rat bites not mouse bites :) why do you want them in a panel? Just let the PCB house do this for you if you want. Adam
  19. Arouse1973

    Hello

    Hi Dave and welcome aboard. Hope you enjoy it here. Adam
  20. Arouse1973

    CPU Power Supply Mod

    Hey Dan, that looks wonderful. You have put so much hard work into your project, well done. Adam
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