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  1. Replies
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    Re: srial over the IR

    Not sure if you were referring to the following links; but just in case they are posted below in full:

    http://www.electro-tech-online.com/articles/basic-ir-communications.361/
    ...
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    Re: srial over the IR

    Take a look at the following, these show you some simple information about RX/TX IR communication and some basic code:

    Basic IR Communications...
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    Re: WIZnet110SR problems

    Not sure how much this helps you, but this link has some info I used. I haven't played with it in a while; but when I did I had it talking on the network. I am still wanting to use this to do...
  4. Thread: SPI woes

    by languer
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    Re: SPI woes

    Maybe I read the manual wrong, but in Mode5 yhr data is clocked on the falling edge (right before the falling edge); which could potentially give you a 0x10 reading (based on your picture). I don't...
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    Re: Underwater speed?

    I agree the paddle wheel is a good, simple idea. But I don't think the paddle wheel by itself can tell you the speed of the boat. If I remember my dynamics class, the paddle wheel will tell you the...
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    Re: finding missing pulses

    I'm a bit puzzled by this, but I'm thinking a big state machine and a timer.

    The state machine starts after the detection of the 1ms pulse (you could use PulseIn for that). Once you have a...
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    Re: Underwater speed?

    That is quite awesome. Could you have some sort of towed array to serve a GPS antenna? That way a GPS module can give you the speed, position, etc.

    Another method I saw was to use two ultrasonic...
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    Re: Underwater speed?

    If you don't mind, I would love to see pictures of this. And of course the method you choose to perform the speed measurement under water.
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    Re: Battery voltage monitoring for use on 16F1825

    Values look good, and calculations match your expectations. I like R12 (bot not 10K, something like 330 or 1,000) only because it provides a bit of isolation from the gate. But Charlie is right, it...
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    Re: Battery voltage monitoring for use on 16F1825

    I think I understand what you're proposing. The 47K would pull-up the FET gate to the supply voltage; I don't think that's a big issue. The 10K isolates the PIC output (input) from the FET gate; that...
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    Re: Question regarding hardware serial and GPIO

    From my experience, you can use the TX pin as an input. This same experienced is shared and discussed on the Microchip forum. However, I don't think you should do it if it can be avoided. Again, I...
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    Re: Question regarding CCP

    That comment is there for every PIC I've used with CCP input. If you are using the CCP input, but configure the pin for an output when you write to the output the CCP module may trigger. It is part...
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    Re: PIC chips from China, shipped in Styofoam

    So you got very cheap parts (cheaper than Microchip even sells in bulk), they do not even have the right logo, and you still wondering why other places are selling them for more money? Welcome to the...
  14. Thread: PWM vs. HIGH

    by languer
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    12,377

    Re: PWM vs. HIGH

    You do know those numbers do go down quite a bit if you use 330uF as opposed to 330F.

    And yes, adding capacitance across the motor reduces noise but the part has to be derated accordingly. In some...
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    Re: reading ultrasonic receve

    In the code that LinkMTech provided there should be no issue with the PAUSEUS or PAUSE commands.

    There is a minimum delay between the time the device reacts to the input (PULSOUT) and the time it...
  16. Re: Moving from Basic Stamp and MIKROE basic to PicBasic PRO

    Well said - that is very funny
  17. View Post

    Nope, i dont think you are. This is a PA (power amp). It is only for the transmitter side. The transceiver is both a transmitter and receiver. A duplexer, switch, combiner ,isolator, or other device...
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    Re: RPM of CPU fan PIC12f683

    Have you tried the HiTech forum: http://forum.htsoft.com/all/ubbthreads.php ?
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    Re: serial data ideas please

    The MCU is HW; so yes it could have an issue. That being said, there can also be an issue with the supporting HW (i.e. around the MCU itself).

    As for reading the silicon revision; look for DEVID1...
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    Re: serial data ideas please

    Sounds like there may be a HW issue. What does the simplified code looks like? Have you checked the errata on the device? There are USART flags for every silicon - but more so for the rev A's.
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    Re: Measuring temperature with a PIC

    LM35 or LM34 - nice and easy; minimal math on PIC to translate voltage to temperature.

    DS18B20 - simple digital interface; almost no math at all on the PIC

    Either choice should suffice: LM3x if...
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    Re: Servo confusion

    The scope is real-time analog signal and the logic analyzer is sampled digital signal. Which means if you have "glitches" of any kind that trigger the digital logic, you will see them as "real"...
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    Re: Best way to read multiple temperatures?

    Some quick math:
    For -30 deg F to + 300 deg F and 0.1 deg F you're talking 12-bit ADC (either external for analog sensor or internal to digital sensor).

    For -30 deg F to + 1800 deg F and 0.1 deg...
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    Re: Dallas CRC8 Routines

    This is a translation for another basic compiler:
    Function crc_dattalo(crc As Byte, crc_data As Byte) As Byte

    'dattalo's CRC-8 Function
    '(328_Tcy / 41.0_us)
    Dim i As Byte
    i = crc_data...
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    Re: Transistor Affecting Timings?

    Is your request then that you want to have the on-time and off-time always the same? Meaning, you want 1_second to be 1_second on Design#1 and also 1_second on Design#2.

    Then you must get your...
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