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Webmug projects

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webmug:

--- Quote from: kickbackemf on March 10, 2011, 19:42:22 pm ---Hi Webmug,


My stm32 should be here any day now.  I'm having some trouble finding info on connecting a cny75 optocoupler between the stm32 and my mosfet.  Could you share for example what you do.  much obliged.


kb

--- End quote ---
Great, what type of board did you choose? Above one like mine?
I use this circuit for PULSE and GATE frequency. Credits to goeytex.
http://www.ionizationx.com/index.php?topic=342.msg11156#msg11156
It has a MOSFET driver.

Br,
Webmug

Steve:

--- Quote from: webmug on March 11, 2009, 12:53:59 pm ---The microcontroller I’m using is the STM32F103 which uses the ARM Cortex-M3 processor for embedded systems.

More information is available on the olimex website: http://www.olimex.com/dev/stm32-103stk.html

(http://www.olimex.com/dev/images/ARM/ST/STM32-103STK-1.jpg)

It has two 12bit ADC's onboard for analog input signals, with the 3 timers we can enable/disable other input output ports up to 72MHz to get the square signal we need.
Only is it not a linear and above 1MHz the steps are very large so this kit is not usefull for the higher freqs. But from 0 Hz to 100 KHz it’s quite accurate. Another timer can be used to implement the gating functionality.

This moment I can start the controller and connect trough USB by using a laptop or PC to instruct it to activate a specified freq.
With a simple circuit we can pulse a mosfet and a transformer or limit the alternator output.
The ADC inputs can be used to check Transformer voltage output from feedback circuits or read water level or pressure in the cell but I first need to now what the voltages are or signals.

If you have questions I will try to answer them.

Did you also tried a self sustaining loop with the alternator?
I’ve read on this forum (Topic: How Stanley Powered His alternator) that Hydro used a 555 timing circuit to regulate this, how did you adjust it?

--- End quote ---

Yes, i also had the selfsustaining alternator.
The trick was to use some charge out of the waterfuelcell.
But the charge was bigger then needed, so we used a pulsing circuit to control it.

kickbackemf:
Webmug,


This is the one.  http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280629429727&ssPageName=STRK:MEWNX:IT#ht_2531wt_909
I use the goeytex two pwm syncro circuit now.  I'll be powering the cny75 opto with 5 v but am unsure about input output and power and ground.  I'll be playing with them according to the datasheet when they come and discover how yet wanted to see what you guys are doing.  I'm guessing that you run the opto output into a mosfet driver anyway.  Thanks for the help...


kb

kickbackemf:
Webmug,


My ebay stm32 will not connect to usb, tried three computers with no luck, drivers won't load,  lsusb in linux doesn't show a device except the pl2303,  I may get the one you have...  then I 'll be asking questions for sure
all the computere see the usb pl2303 serial adapter for terminal use, but not the USB jlink                    hopes are dashed for now
regards,
kb

webmug:

--- Quote from: kickbackemf on March 22, 2011, 01:16:27 am ---Webmug,


My ebay stm32 will not connect to usb, tried three computers with no luck, drivers won't load,  lsusb in linux doesn't show a device except the pl2303,  I may get the one you have...  then I 'll be asking questions for sure
all the computere see the usb pl2303 serial adapter for terminal use, but not the USB jlink                    hopes are dashed for now
regards,
kb

--- End quote ---
Linux don't give permissions to open USB devices. Do you use ubuntu?
 "lsusb -v" to get the Product ID and Vendor ID of the programmer. When you see segger you must make a udev rule and restart udev.

Br,
Webmug

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