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  1. foTONICS

    Wireless trigger for LEDs and buzzers

    What would be a nice way to test if my PIC is transmitting serial data correctly? I don't have a scope at home but I may be able to use one at work
  2. foTONICS

    Wireless trigger for LEDs and buzzers

    Okay I just looked more at the wireless transceivers datasheet and it uses MOSI/MISO SCK and the like so I believe it's expecting synchronized data
  3. foTONICS

    Wireless trigger for LEDs and buzzers

    I thought serial communication and SPI were the same things (sorta) You say serial is asynchronous and SPI is synchronous, which would be better in my application? I would rather not have to add any drivers for the LED so I was thinking asynchronous. So if I don't use SPI but rather...
  4. foTONICS

    Wireless trigger for LEDs and buzzers

    bit banging is just setting up a for-loop and adding in some while-loops to look for the start and stop bits right? Aside from staggering the sampling so you take in values in the middle of the data is there anything else I should consider? Are interrupts necessary? Since this is...
  5. foTONICS

    Wireless trigger for LEDs and buzzers

    I understand serial communication but I have never actually designed something that uses it before (outside of flip flops and the like). That being said I need to do some catch up reading on the PIC's datasheet before I can move ahead with any of this. I'll keep the thread posted as I make headway
  6. foTONICS

    Wireless trigger for LEDs and buzzers

    Yes the typical rope net found on basketball goals, this also means I have to investigate which kinds of sensors would be best Yes, the transceiver at the master is the one taking in the information from the two basketball goals (each goal having it's own NRF25L01) and processing it if...
  7. foTONICS

    Wireless trigger for LEDs and buzzers

    I like your suggestion about how the upstream device needs to be able to tell if something is wrong with a downstream device trying to send data. I also assume upstream would be the master and downstream would be the slave. So this is what I think so far of my setup: 1. Each net has...
  8. foTONICS

    Wireless trigger for LEDs and buzzers

    MPLAB X IDE using Xc8 Also I don't think I will need full duplex operation of the NRF24L01's, I figure each net will only transmit, holding the value of the score on it's own micro. The micro controlling the seven segment LED's will just act as a receiver. Now that I think about it, would...
  9. foTONICS

    Wireless trigger for LEDs and buzzers

    This thread encompasses two projects for me. This flashing LED project started by cyberteen (who I haven't seen post on this thread in quite some time) and another side project of mine where I want to keep electronic score at a basketball game. The reason for sleeping the micro is b/c each net...
  10. foTONICS

    Wireless trigger for LEDs and buzzers

    On another note I realized that my PIC16f627a does not have an SPI hardware module so I will have to most likely use a built in function. As I have never used it before I may start asking questions. Is anyone familiar with it?
  11. foTONICS

    Wireless trigger for LEDs and buzzers

    So I found this and came upon this: "The SPI pins are all done, so now let’s get to the seventh pin from the top, the IRQ pin. This guy is basically the interrupt pin to signal your microcontroller that something interesting has happened. You can set interrupts for any combination of the...
  12. foTONICS

    Wireless trigger for LEDs and buzzers

    Lol, some of the google results brought me back to this thread
  13. foTONICS

    Wireless trigger for LEDs and buzzers

    Okay guys so I bought this To me it looks like it's just the NRF with a crystal and associated resistors/caps. I can't seem to find a datasheet for this particular breakout board. I should just be able to follow the NRF datasheet and be fine right?
  14. foTONICS

    How does a RF mixer circuit work?

    neat, I didn't know that
  15. foTONICS

    Kirchoffs First and Second Law in this basic circuit:

    I think mesh analysis may be of help here? read up on this: http://en.wikipedia.org/wiki/Mesh_analysis edit: sorry, superposition not mesh
  16. foTONICS

    Bicycle motion sensor alarm

    I think I would do away with the tilt/mercury switch. if a thief picked the bike straight up and was careful the alarm would never go off on a side note: I would run any cabling through the frame of the bike and hide any components so as not to be snipped
  17. foTONICS

    Bicycle motion sensor alarm

    if you're looking for something really sensitive you can look at an IMU, although if you're just starting out it may be beyond your reach (programming and the like) here's a link: https://www.sparkfun.com/categories/160 I'm sure you can find other cheap/simpler options somewhere else, I just...
  18. foTONICS

    lighting a 7 segment LED

    hi-jack away, I've gotten my answer Thanks everyone for all the help and insight. I've applied the corrections, given each segment it's own resistor and the display couldn't be brighter (even when the "8" is lit).
  19. foTONICS

    lighting a 7 segment LED

    I don't have a schematic handy but basically I have: -The PIC16f627a powered by the PICKIT2 -A 1K ohm resistor connecting Vpp to the common anode of the 7 segment display -I am using only one 7 segment display -Each cathode of the display connected by hook-up wire to a pin on the uController...
  20. foTONICS

    help with picaxe

    Not really, I was referring to the way mechanical switches bounce around a lot before actually settling. This bouncing can cause your program to alter states faster than you can see. Read this: http://www.gooligum.com.au/tutorials/midrange/PIC_Mid_C_1.pdf it's always helped me and I...
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