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Type: Posts; User: dr hydra

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  1. Re: programming a propeller with another propeller

    First...thank you for all the replies...so, lately I have been using propellers that are on parallax development boards such as quickstart board and the protoboards...these boards already include the...
  2. Re: programming a propeller with another propeller

    T Chap

    I think you are right...that is a lot of work to programmer one propeller...it is probably best just to create a full ARM to propeller programmer (CTR, TX, RX) lines. Is there a good...
  3. programming a propeller with another propeller

    I know it's a strange question...but has anyone used a propeller to program another propeller? The reason I am asking is that I have an ARM chip that can function as a USB to Uart bridge...however,...
  4. Programming a propeller dip with raspberry pi gpio

    Can you program a propeller dip with a raspberry pi through the rpi gpio pins? Does something like the simpleIDE let you program the propeller through gpio...not a fdti usb chip...if so, does...
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    Re: power on the propeller project board

    Perfect...thank you
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    Re: power on the propeller project board

    For the 5v usb...what resistor do I solder off from? Does anyone have a picture?
  7. Thread: 10n capacitor

    by dr hydra
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    10n capacitor

    Does a 10n capacitor equal .1uf or .01uf?

    Thank you
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    Re: Quickstart board and raspberry pi

    Great info...thank you...
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    Quickstart board and raspberry pi

    Can you plug the quickstart board directly into the raspberry pi usb port...does the RPI output enough power? can you communicate with uart between the boards? Does the RPI recognize the FTDI chip?...
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    Human interface board

    I got a new project that I would like to use .wav file audio...I am very interested in using Kwabena Agyeman's KISSwav objects...first, will the KISS wav objects work directly with the human...
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    Re: Can the propeller run on 3.0 volts

    I know it is overkill…but it is cheap insurance…For communications from the propeller to the stm32…I am going to run a 74lvs244 between the propeller tx (running at 3.3V) and the stm32 rx (running at...
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    Re: Can the propeller run on 3.0 volts

    This has been very helpful...an external pull down is simple...I will go with that...however how would you hold the propeller in reset...I am not sure how that works...
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    Re: Can the propeller run on 3.0 volts

    Thank you...thank you...

    This has been a big help...it looks like most pins are set floating input...which would make the ft pins 5v tolerant. Perfect...

    I am thinking the safest setup for me...
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    Re: Can the propeller run on 3.0 volts

    Thank you for the help

    I cannot find the default settings for the gpio pins...any ideas...once I found out the default setting...I need to make sure the gpio is set to input with no pull or pull...
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    Re: Can the propeller run on 3.0 volts

    Another thought...could or should I run a diode on the propeller pins (output) to the stm32 (inputs)...the voltage drop would be around .2 to .3 volts? Then the propeller output voltage (3.3v) in...
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    Re: Can the propeller run on 3.0 volts

    Thanks for the answers...I have one more concern...with the stm32 vdd running at around 3.0v and the propeller's 3.3v will the gpio pins on the stm32 be damaged by the propeller...if I am reading the...
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    Can the propeller run on 3.0 volts

    I know the data sheet shows a min of 2.6volts...but what happens if the voltage is 2.8 to 3.0...does the propeller run or does it keep resetting? Does it cause any damage?
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    Re: What is the max power draw on the propeller

    Thank you for the help...

    It looks like my best bet is to use the 5v power supply on the discovery board and add a LM2937ET 3.3 LDO to power the propeller...thanks again for the help
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    Re: What is the max power draw on the propeller

    Peter...sorry for the confusion...I am looking to use a propeller has a "gpu" device with the stm32f4 discovery as the CPU/ brain. The propeller would be powered by the stm32 discovery...
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    Re: What is the max power draw on the propeller

    This power draw is driving me nuts...I was also looking at adding a propeller to the stm32F discovery board...however, it looks like the max output on the 3.3v is 100mA...Can I add the propeller to...
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    Re: What is the max power draw on the propeller

    I am looking at using the PIC microstick and propeller together...Powering the propeller from the microstick's power supply. The microstick has a limit of 500mA. Also, the 23lc256 would need to be...
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    What is the max power draw on the propeller

    Is the max power draw on the propeller under 500mA?
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    IR signal question

    I am looking at the IR kit from the object exchange. I am trying to understand how to use the propeller to send IR signals. The signal is modulated at 38K…however, looking at the IR_tx_nec spin...
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    refresh my memory

    On the propeller project boards ver 1.0 and 2.0...what was the problem with the VGA display and how do you fix it..
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    Re: looking for a logic chip

    Thank you for the help...I was hoping for a nice simple logic chip:)...CPLD looks like the best option...however...I would need it in a DIP...
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