http://tech.groups.yahoo.com/group/68HC12/ 68HC12 Fri, 20 Nov 2009 23:21:05 GMT defessler@... http://tech.groups.yahoo.com/group/68HC12/message/16545 http://tech.groups.yahoo.com/group/68HC12/message/16545 I do no have an oscilloscope. I am still looking at the code. Hello, Fri, 20 Nov 2009 23:09:03 GMT Andrei Chichak http://tech.groups.yahoo.com/group/68HC12/message/16544 http://tech.groups.yahoo.com/group/68HC12/message/16544 If your servo is chattering in its rotation, I would say that the frequency is wrong. If your servo continues to rotate, I would say that the PWM duty cycle is Fri, 20 Nov 2009 23:00:51 GMT Redd, Emmett R http://tech.groups.yahoo.com/group/68HC12/message/16543 http://tech.groups.yahoo.com/group/68HC12/message/16543 Do you have an oscilloscope (to verify the length and frequency of your pulses)? Emmett Redd Ph.D. mailto:EmmettRedd@... Professor Fri, 20 Nov 2009 22:44:10 GMT defessler@... http://tech.groups.yahoo.com/group/68HC12/message/16542 http://tech.groups.yahoo.com/group/68HC12/message/16542 I have been doing that. It refuses to turn any direction aside from clockwise. Do you see any issues with my code. This is what I have now. PWMPOL = 0x01; Fri, 20 Nov 2009 22:21:26 GMT Andrei Chichak http://tech.groups.yahoo.com/group/68HC12/message/16541 http://tech.groups.yahoo.com/group/68HC12/message/16541 There is a trim screw in the side of the servo. Set the pwm to 1.5ms and adjust the screw so that the servo stops moving. Then adjust the pwm and your servo Fri, 20 Nov 2009 19:55:06 GMT defessler@... http://tech.groups.yahoo.com/group/68HC12/message/16540 http://tech.groups.yahoo.com/group/68HC12/message/16540 Hello, I am trying to control a Parallax Continuous Rotation Servo (#900-00008) using my MC9S12C128CFUE. I need to to use PWM to give a pulse 1.5ms(rest), Wed, 18 Nov 2009 02:17:43 GMT justin lucas http://tech.groups.yahoo.com/group/68HC12/message/16539 http://tech.groups.yahoo.com/group/68HC12/message/16539 http://www.axman.com/?q=node/138 helps to include the website... Justin ... _________________________________________________________________ Windows 7: I Wed, 18 Nov 2009 02:01:14 GMT justin lucas http://tech.groups.yahoo.com/group/68HC12/message/16538 http://tech.groups.yahoo.com/group/68HC12/message/16538 Here is a web site for some examples for programming with the LCD and other periphals. Good luck. Justin "In theory, there is no difference between theory and Tue, 17 Nov 2009 23:39:59 GMT Tom Almy http://tech.groups.yahoo.com/group/68HC12/message/16537 http://tech.groups.yahoo.com/group/68HC12/message/16537 The CD that comes with the board has an example program that uses the LCD display. Tom Almy Tualatin, Oregon USA Internet: tom@... Website: almy.us Tue, 17 Nov 2009 15:54:03 GMT bjc_dude http://tech.groups.yahoo.com/group/68HC12/message/16536 http://tech.groups.yahoo.com/group/68HC12/message/16536 Hi All I need some help?. I need help with writing a program to display a name on the lcd of the dragon 12 board. I am writing this program in assembly using Sun, 15 Nov 2009 19:35:46 GMT justin lucas http://tech.groups.yahoo.com/group/68HC12/message/16535 http://tech.groups.yahoo.com/group/68HC12/message/16535 Pending on which version you are using of the board determines what pins can be used. If you are using the Mini-dragon Rev F, then the schematic specifically Sun, 15 Nov 2009 08:24:40 GMT Ruben Jönsson http://tech.groups.yahoo.com/group/68HC12/message/16534 http://tech.groups.yahoo.com/group/68HC12/message/16534 Standard pinout for a Hitachi 44780 (or compatible) based charcter display does have GND at pin 1 and VCC at pin 2 so you do have these correct. However, the Sat, 14 Nov 2009 17:41:53 GMT Thai http://tech.groups.yahoo.com/group/68HC12/message/16533 http://tech.groups.yahoo.com/group/68HC12/message/16533 Yes, I received the minidragon from Wytec, I know there are dedicated pins for LCDs but I would like to connect my LCD on a breadboard directly to port A. I've Sat, 14 Nov 2009 14:12:45 GMT justin lucas http://tech.groups.yahoo.com/group/68HC12/message/16532 http://tech.groups.yahoo.com/group/68HC12/message/16532 The Minidragon plus2 board should have ports/pin already dedicated to the LCD. As posted earlier, check the schematic...did you purchase the board through Sat, 14 Nov 2009 13:18:29 GMT Bill Auerbach http://tech.groups.yahoo.com/group/68HC12/message/16531 http://tech.groups.yahoo.com/group/68HC12/message/16531 ... Most displays do not need the pot and work find with 0V. Some older displays that did require it just needed a small negative voltage which few board have