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  1. Re: Using Processing to display data graphs

    I attended the local club's rocket launch yesterday, and was able to get some actual flight data. The telemetry system worked pretty well, giving a 3d rendering of the position of the rocket while it...
  2. Re: Using Processing to display data graphs

    Wow Richard,

    That's very impressive what Python can do with so few lines of code! The readings are received at a rate of 100 times per second, but yes, that is basically it. I am sure I can zoom...
  3. Using Processing to display data graphs

    I have been working on a hobby project, telemetry on a model rocket, and wanted to be able to display some nice graphs from the data it generates. There are a lot of examples on how to use processing...
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    Re: Cordic trig assembly code for PIC18f

    That's weird. Maybe you can show us some of your code?
  5. Re: minimising 18F basic operational current!

    Hi Jimbo,

    pause does not put the chip in any kind of sleep state. It is busy counting. And from page 520 :) of the data sheet, it says at 48 mhz, the chip will use 19.5 ma. So, at 24 mhz, it...
  6. Re: Can someone please provide a proteus module for DAC ??

    Did you label the blue bus (just outside the chip) with d[0..9], and label all the individual lines from the dip switch that go to the blue bus ( d0, d1 ...)
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    Re: don't work on circuit, please help

    4 mhz would require the config to be XT_OSC. I would try changing to the XT config using the 4 mhz chip. Oh, that and turn debugger off. Otherwise you can't use RB6 and RB7.
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    Re: don't work on circuit, please help

    Hi, and welcome to the forum DonLuis.

    Proteus lets a lot of things work in the virtual world, that will not work in the real world. For the real world 16F877 you need an oscillator to be...
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    Re: Pic18F4550 + SIMCOM SIM900D GSM/GPRS

    Hi tacbanon,

    I loaded your code from post 19 into a circuit here, and tested hserout with your settings. I couldn't seem to get anything out, unless I removed your brown out reset in the configs....
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    Re: Unique ID counter

    If they are all to carry the same firmware, you can have Microchip program them for you, for a fee. They can program a unique serial number using their Serialized Quick-Turn Programming (SQTP) . But,...
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    Re: Pic18F4550 + SIMCOM SIM900D GSM/GPRS

    Are you using some kind of shield, or the SIM900D development board? Can you point me to a schematic for the one you have? If shield, did you connect some kind of rs-232 to connect it to your...
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    Re: Pic18F4550 + SIMCOM SIM900D GSM/GPRS

    That is correct. And make sure your voltages match, so no one gets hurt. :)
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    Re: Pic18F4550 + SIMCOM SIM900D GSM/GPRS

    if that is the case,

    You can invert the comms for the pic18f4550. This will make it possible to talk to a modem without a rs232 chip: http://www.picbasic.co.uk/forum/showthread.php?t=10361
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    Re: sweeping LED light effect

    How about this one? http://www.picbasic.co.uk/forum/showthread.php?t=10564&p=70256#post70256
  15. Re: highest or lowest variable in an array; how do you find it?

    Here's one way:



    i var byte
    lowest var byte
    highest var byte
    myarray var byte[50]

    'then do something to fill array with data
  16. Re: Complicated but interesting.....Need some thoughts

    Hi Megahertz,

    As I understand it, you are going to have an boom length variable that will probably be in between two numbers on the boom chart. And you will also have a radius variable that will...
  17. Sticky: Re: Presetting Configuration Fuses (PIC Defines) into your Program

    Sorry, I wish I was Melanie, but I have not seen her around lately, or even not so lately.
    The 18F2680 needs different syntax for those options. Check out post # 42 of this thread.

    Here is the...
  18. Re: Complicated but interesting.....Need some thoughts

    Here's one way to do it.

    You could have 5 lookup tables. One for each boom length. Say the boom is between 10 and 12 meters extended, so in between the values of your chart... For example the boom...
  19. Re: Complicated but interesting.....Need some thoughts

    Hi Megahertz,

    The first question sounded pretty easy, with a 4 x 4 chart. Could do that using separate case statements, though not elegant. But you made it a lot tougher with .1 increments :) in...
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    Re: PBP and Lassen SQ GPS

    Here is a link for someone that is doing something similar, with a PIC18F. It looks like they share the hex and assembly code. They do seem to do a pretty good job of explaining it in the two .pdfs ...
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    Re: PBP and Lassen SQ GPS

    Have you seen this?

    http://www.picbasic.co.uk/forum/content.php?r=206-Using-a-16F628A-to-indicate-reliability-of-a-10MHz-reference
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    Re: Need Advice on SENSORS for a project

    That's an interesting sensor. It has a ratiometric output. See section 2.2 for straight line equation. But this seems to get high errors above 30 degrees (I think maybe that's why they dont list...
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    Re: 16f687 - Where is the data stored?

    Here is a thread about embedding your strings into code space:
    http://www.picbasic.co.uk/forum/showthread.php?t=1999
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    Re: 18F4550 config

    That is not one of the options from the list.

    Here are the defaults from PBP


    __CONFIG _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
    __CONFIG _CONFIG1H,...
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    Re: 18F4550 config

    Yes, you can use HS. If you have pbp 3.x, you can check by looking in the pbp3 directory, under the device reference file.

    For the 4550 osc configs, you will find these options:


    ; Oscillator...
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