williB
New Member
some of you will remember that i made my own pic programmer
its based on a SPI like interface that hooks into the pc through the ISA bus , and is controlled by a pascal program running under DOS.
the beauty of the system is the control you have over the signals being sent to the pic .
i will post the schematic , and the pascal source program , if there is interest
Well i just ended two days of debugging of the program which works verywell now.
it doesnt program the config word , yet.
and you have to strip off the first and last lines of the Hex file before running the pascal program. but i dont expect much interest in programming a pic by this method , but the spi interface is cool , and i've used it to run a Microchip MCP3004 four channel a/d converter, as well as program the pic.
i have been assembling sensors like the hall effect sensor found in any cd rom drive motor.(each motor has three)
with this sensor i am going to (and have) measured AC current and Frequency(RPM) from a Permenant magnet alternator.
i have another input to the data logger that i want to use , it is a hall effect switch ( from a pc powersupply fan ) with the armeture removed and the hall switch & the circuit board left intact, this will display wind speed . I have allready used this setup hooked to a scope , and with 5v applied to the circuit board , a 0-5v digital signal pops out whose frequency varies with the applied wind speed .
i would also like to measure pressure , there was/is a USB Mail scale from rat shack for sale on ebay, but i'll wait on that .
i would like to have the F877A talk to my laptop through the serial port , and have the laptop collect and store all the data , for later analysis.
i dont have any immediate questions ,but i know i will have many, i just thought i would let yall know what i've been up to.
its based on a SPI like interface that hooks into the pc through the ISA bus , and is controlled by a pascal program running under DOS.
the beauty of the system is the control you have over the signals being sent to the pic .
i will post the schematic , and the pascal source program , if there is interest
Well i just ended two days of debugging of the program which works verywell now.
it doesnt program the config word , yet.
and you have to strip off the first and last lines of the Hex file before running the pascal program. but i dont expect much interest in programming a pic by this method , but the spi interface is cool , and i've used it to run a Microchip MCP3004 four channel a/d converter, as well as program the pic.
i have been assembling sensors like the hall effect sensor found in any cd rom drive motor.(each motor has three)
with this sensor i am going to (and have) measured AC current and Frequency(RPM) from a Permenant magnet alternator.
i have another input to the data logger that i want to use , it is a hall effect switch ( from a pc powersupply fan ) with the armeture removed and the hall switch & the circuit board left intact, this will display wind speed . I have allready used this setup hooked to a scope , and with 5v applied to the circuit board , a 0-5v digital signal pops out whose frequency varies with the applied wind speed .
i would also like to measure pressure , there was/is a USB Mail scale from rat shack for sale on ebay, but i'll wait on that .
i would like to have the F877A talk to my laptop through the serial port , and have the laptop collect and store all the data , for later analysis.
i dont have any immediate questions ,but i know i will have many, i just thought i would let yall know what i've been up to.
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