Hellow,

I want to built a bedini motor, and for the reedswith and pulses i want to use a pic+eeprom micro controller.

The one i want to use can swith at 2000/seconde

Is that quick enough to swith to capture the 120V spikes?

Thanks in advance

Thomas

The specifi on the micropocessor is:

24 digital I/O-lines, 8 of them can be defined as analog input (8 bits resolution).
1 counter-input, can generate an interrupt when the counter goes from 255 to 0.
2 I2C expansion buses for real-time clock module, LCD module, additional I/O-lines, A/D, D/A, EEPROM etc.
full duplex RS232 serial communication at 300 / 600 / 1200 / 2400 / 4800 / 9600 or 19200 bps.
RS232 receive buffer: 32 bytes
the counter, rs232, expansion bus and I2C-bus do not use the 24 standard I/O-lines.
reads the unique ID of Dallas iButtons.
260 bytes of RAM
types of variables: words, bytes, booleans, array of byte.
processing speed max. 5950 Pascal-instructions / second.
based on the Microchip PIC16C77 (PDIP-40).
operating supply voltage: 2.5 V to 6.0 V

Lol,

Do you want to build a Bedini or play with microcontroller ?
(Your title are not exact you havnt got a microprocessor, juste a microcontroler (witch is not the same) )

So, why don't you build a basic setup like that or other


After you can improve it or build a wnidow moto coil, or SSG2 with a mecanique sensor and after you can put you electronique sensor and you µC, and what you want....

Be simple, first valid the concept and AFTER improve it, it's my opinion
Or if you just want to play with µC there are perhaps more interesting to do with....

Sorry for my bad english

Have nice day

Molux

thanks for your reply,

I realy want to use a microCONTROLLER(btw the pic is a microproccessor) to control the pulse and to switch.
Mechanics are not my first degree, so i rather start of with the program and microcontroller.

I know that you first have to give a pulse, then before the currents starts you can collect the back emf??right??

I just want to know how fast the microcontroller has to switch in order to get the switch and pulse right.

so 5700 pascal lines per second, wouldt that be quick enough?

ps. i understand that if i first 'play' with the bedini girl i get more educated, and i also will do that, but i really like a microcontroller in the proces of doing that, so i can precisely regulate the system and adjust it properly

Thanks 

Hi,

I rigged up my little window motor to a PIC16F628 only a couple of weeks back.  It was much harder than I thought to get it running.

I used the trigger winding to turn on an off a 2n2222a which was taken to +5v with a 10k resistor.  The collector then went to the PIC micro.  When the collector was low the transistor was on and the PIC turned on another output which fired the motor stator coils.

Then you can ensure the ON time for the stator is as long or as short as you like.  However if too short the program saw the input low by transformer action between the coils and the program ended up looping.  Also it means you have a set RPM, unless you can write a very dynamic program which allows for acceleration.  I gave up, Johns original circuit its much simpler and MUCH BETTER!


D.