NIGHTHAWK
Newbie level 3
stepper 24v 12v
I am doing a project on the development of a microcontroller based solar panel tracker. This is a prototype and the solar panel is powered by a stepper motor (7.5 degrees unipolar PM35S-048 having 5 wires. Drive voltage is 24v and coil resistance is 50 ohm.)I am using the 8255 PPI along with the 8051 microcontroller. I connected a sensor ciruit to port A of 8255 which acts as input port and connected the stepper motor to the port B which acts as output port. I used a ULN2003 ic in between the stepper motor and the 8051 microcontroller to achieve the required power rating. I used a 12v adaptor for the purpose of stepper motor Vcc. I wrote the assembly level program and ran it on the 8051 assembly kit by connecting the pins accordingly however I was unable to get any rotation of the stepper motor. My project is due in 2 days and I am in a ditch. If any one is willing to help me out and if any one has any info on this please do reply so that I may send you detailed information. I would be grateful for the help. Please reply As soon as possible
Added after 6 minutes:
sorry but i forgot to tell my id it's sandeep_p_84@yahoo.co.in
I am doing a project on the development of a microcontroller based solar panel tracker. This is a prototype and the solar panel is powered by a stepper motor (7.5 degrees unipolar PM35S-048 having 5 wires. Drive voltage is 24v and coil resistance is 50 ohm.)I am using the 8255 PPI along with the 8051 microcontroller. I connected a sensor ciruit to port A of 8255 which acts as input port and connected the stepper motor to the port B which acts as output port. I used a ULN2003 ic in between the stepper motor and the 8051 microcontroller to achieve the required power rating. I used a 12v adaptor for the purpose of stepper motor Vcc. I wrote the assembly level program and ran it on the 8051 assembly kit by connecting the pins accordingly however I was unable to get any rotation of the stepper motor. My project is due in 2 days and I am in a ditch. If any one is willing to help me out and if any one has any info on this please do reply so that I may send you detailed information. I would be grateful for the help. Please reply As soon as possible
Added after 6 minutes:
sorry but i forgot to tell my id it's sandeep_p_84@yahoo.co.in