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  1. (*steve*)

    choosing micro fo BLDC motor speed control

    I cant figure out what you mean, but if what you mean is that you just want to run a BLDC motor without anything special, id just look at what software is available for your favorite microcontroller family. What is your favorite microcontroller family?
  2. (*steve*)

    choosing micro fo BLDC motor speed control

    The problem is that optimal control is more likely to be determined in your software than your microcontroller per se. Ae you interested in simplicity? If so, look for a micro with a dedicated BLDC controller. Are you looking for the best performance (maybe torque ripple minimization)? Then...
  3. (*steve*)

    Push Button H2O - Reversing Polarity

    With more smarts at each end you could encode a single channel to send a start or a stop signal, but effectively boils down to the same thing.
  4. (*steve*)

    Can CP2102 USB to UART be used to power 5V devices?

    Sorry, somewhere along the way I inserted a microcontroller in there somewhere. What speed is the uart set to and what does the module expect?
  5. (*steve*)

    Can CP2102 USB to UART be used to power 5V devices?

    Are you using any of the same pins used by the programmer?
  6. (*steve*)

    choosing micro fo BLDC motor speed control

    I've not used a microcontroller to drive a brushless dc motor, but I'm aware of roughly how its done. I cant see any compelling reason to use one microcontroller over another. Any recommendation I give will be strongly influenced by my skills and experience. A brief google suggests that there...
  7. (*steve*)

    choosing micro fo BLDC motor speed control

    I assume you make some distinction between atmega and arduino. Not knowing what that is, I can't make any recommendation with respect to arduino. As for the remaining options, it comes down to your experience, availability of tools, and personal preference. There are no hard and fast rules...
  8. (*steve*)

    Can CP2102 USB to UART be used to power 5V devices?

    1) What powers the converter board and how much current can it supply? 2) what current is consumed by the converter board? 3) what excess current can be supplied? (the difference of the above) 4) how much current does the radio modern require? 5) is the current required (5) less than or...
  9. (*steve*)

    Push Button H2O - Reversing Polarity

    That would be simplest. It would also guarantee you know the state after you press the button. If not, all you know is that it has changed.
  10. (*steve*)

    Push Button H2O - Reversing Polarity

    You could use an H bridge to enable power to be applied in either direction. Presumably the receiver will only apply a momentary pulse.
  11. (*steve*)

    Active and resistive load current

    How can it be pointless? I know what an active load is, and I know what a resistive load is, and I know what current is. However, unless someone defines the properties of the active load, I can say less about it than I can for the resistive load. If the question were about a reactive load...
  12. (*steve*)

    Active and resistive load current

    I'm with Ratch. I have no idea what those terms mean.
  13. (*steve*)

    Power amplifier

    I can think of an advantage. I am building a wireless charger for a particularly hungry multimeter. It allows for very good isolation.
  14. (*steve*)

    8,16,32 bit controllers

    8, 16, or 24 bits
  15. (*steve*)

    DC Motor drive

    I would tend to go for PWM because it's going to give you the best torque at low speeds.
  16. (*steve*)

    Four way UK traffic lights

    Of course it all depends on how your traffic lights are sequenced. That circuit doesn't mimic the sequence used here. Maybe the UK??
  17. (*steve*)

    Power amplifier

    What are you studying? It's important we give you suitable guidance. If you're studying psychology we probably won't expect you to understand transconductance (for example)
  18. (*steve*)

    Four way UK traffic lights

    You only need a single 555 and 4017. I would also recommend a slightly higher power supply voltage and series resistors for the green led. What you then need to do is to decode the outputs in 2 ways appropriate for each direction of travel Something like 1. Red. Red 2. Red green 3. Red...
  19. (*steve*)

    Was, Were, Wasn't and Weren't

    K
  20. (*steve*)

    Laminator for PCB's ?

    Other than the actual heated rollers (which came from a commercial laminator) the entire thing is pretty much hand built.
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