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  1. Thread: DAC object

    by WaldoDTD
    Replies
    7
    Views
    837

    thank you, sorry for the lapse, Would it be...

    thank you, sorry for the lapse,

    Would it be possible to build a circuit where the stamp only has to write a hexadecimal number to a pin and have that number correlate to gates on an IC is this a...
  2. Also if I tied the ground lead of a battery pack...

    Also if I tied the ground lead of a battery pack to the ground on the board would this do anything to the board? Would it create a common ground?
  3. Maximum parameters drawing from the board directly and placement of Vm pin

    Hello,
    Need to know what is the maximum amp load/voltage load the Javelin can maintain. I have accidentally blown out a stamp in the past and do not wish to do so again. Also where is the Vm...
  4. Thread: DAC object

    by WaldoDTD
    Replies
    7
    Views
    837

    so I have been looking over everything, the load...

    so I have been looking over everything, the load requires a very high current (4A) so i don't think the opamp would be a viable option, instead i am thinking of maybe a optocoupler and sending a PWM...
  5. Thread: DAC object

    by WaldoDTD
    Replies
    7
    Views
    837

    DAC object

    So I was wondering how best to make a DAC that is able to control an outside power source I need voltages above 5V and can't use the DAC voltage class is there a chip that will be able to discern...
  6. Thread: Thermisistor

    by WaldoDTD
    Replies
    3
    Views
    951

    Thermisistor

    So I am looking at using a thermisistor to monitor a wire's temperature that is submerged in either oil or antifreeze. I am wondering if I insulate the leads up to the sensor would that protect it...
  7. Thread: Thermocouple

    by WaldoDTD
    Replies
    8
    Views
    1,247

    what is the voltage/power requirement for a...

    what is the voltage/power requirement for a LM399, if i am correct in assuming that you connect it to a voltage and it either goes logic high or low when a voltage is above a set current correct?
  8. Thread: Thermocouple

    by WaldoDTD
    Replies
    8
    Views
    1,247

    What about a resistance thermometer? What I need...

    What about a resistance thermometer? What I need is a sensor that can figure out if any point on a wire gets above 90C. I don't care where it is I just need to make sure it doesn't go higher than 90C.
  9. Thread: Thermocouple

    by WaldoDTD
    Replies
    8
    Views
    1,247

    Thermocouple

    So, when using thermocouples, is it possible to monitor an entire length of wire or does the thermocouple only monitor one point?
  10. Replies
    7
    Views
    1,386

    i turned it on patching from the header for the...

    i turned it on patching from the header for the appmods, there was no echo
  11. Replies
    7
    Views
    1,386

    should I disconnect pin 21 as well or can i just...

    should I disconnect pin 21 as well or can i just make a bridge over from the vdd board socket? Thanks-Adam
  12. Replies
    7
    Views
    1,386

    No echo, no voltage across the Vdd and vss

    No echo, no voltage across the Vdd and vss
  13. Replies
    7
    Views
    1,386

    Unable to connect to Javelin Stamp

    Ok so my microcontroller stopped working, I am getting an IDE error 0056, I am connecting to the board using a USBto232 adapter and using a BOE Rev C. I was testing a transistor circuit by hooking...
  14. Replies
    0
    Views
    1,175

    Speed Controllers

    Hey,
    I am looking into using the javelin microcontroller to control 2 motors using a speed controller. What do I need to know to set up the microcontroller/run it. I know that I have to send a...
  15. Thread: accelerometer

    by WaldoDTD
    Replies
    5
    Views
    1,403

    What if given certain initial conditions i just...

    What if given certain initial conditions i just took the integral of the function used to find the acceleration two times to get position?
  16. Thread: accelerometer

    by WaldoDTD
    Replies
    5
    Views
    1,403

    accelerometer

    Hey,
    I am interested in building a robot using the Mesmic Tri Axis accelerometer to figure out the orientation of the robot relative to a base point. Would an accelerometer be the best tool...
  17. Thread: ACK!!!

    by WaldoDTD
    Replies
    21
    Views
    2,198

    java i assume it is the same right?

    java i assume it is the same right?
  18. Thread: ACK!!!

    by WaldoDTD
    Replies
    21
    Views
    2,198

    Hey, Had to take a break from the project...

    Hey,
    Had to take a break from the project because of college but now I am nearing the completion and I need to rewrite a lot of the protocols that transmit signals to the arm. Ok, so the...
  19. Thread: new java code

    by WaldoDTD
    Replies
    10
    Views
    1,611

    Hey, I have a couple questions, 1st- is the...

    Hey,
    I have a couple questions,
    1st- is the low/high byte transmission protocol really necessary, can i just send the integer to the stamp and have it pick it up in an int array?
    2nd- How would I...
  20. Thread: new java code

    by WaldoDTD
    Replies
    10
    Views
    1,611

    ok well my protocol sends int&0xFF first then...

    ok well my protocol sends int&0xFF first then int>>>8 so I assume that the highbyte is sent first so I will just put the int high before the int low then. Thanks!-Adam
  21. Thread: new java code

    by WaldoDTD
    Replies
    10
    Views
    1,611

    public static void assembleMessage(){ int cmd...

    public static void assembleMessage(){
    int cmd = 0;
    int bufindex= 1;
    int messageindex = 1;
    message[0] = 1;

    while(bufindex <= 10){
    cmd =...
  22. Thread: new java code

    by WaldoDTD
    Replies
    10
    Views
    1,611

    low byte is int>>>8 right?

    low byte is int>>>8 right?
  23. Thread: new java code

    by WaldoDTD
    Replies
    10
    Views
    1,611

    When I transmit from the computer to the stamp,...

    When I transmit from the computer to the stamp, here is the scheme I use to write to the output stream in the COMM API

    outputStream.write(0x11);
    ...
  24. Thread: new java code

    by WaldoDTD
    Replies
    10
    Views
    1,611

    new java code

    hey,
    I've been working on this code and I don't have the javelin in front of me right now but will soon, does this look good to interpret a control string if the first byte was 0x11 then...
  25. Replies
    5
    Views
    925

    well this was not intended to be narcisstic in...

    well this was not intended to be narcisstic in anyway I would just like to get other people's take on robotics and reasons why they are interested in it.
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