{"id":4460,"date":"2017-04-12T13:36:01","date_gmt":"2017-04-12T12:36:01","guid":{"rendered":"http:\/\/pthat.com\/?post_type=project&p=4460"},"modified":"2026-03-24T14:59:16","modified_gmt":"2026-03-24T14:59:16","slug":"pthat-example-speed-on-the-fly","status":"publish","type":"project","link":"https:\/\/pthat.com\/index.php\/project\/pthat-example-speed-on-the-fly\/","title":{"rendered":"Changing Speed on the Fly Example using Instant Commands"},"content":{"rendered":"

[et_pb_section fb_built=”1″ fullwidth=”on” custom_padding_last_edited=”on|desktop” admin_label=”Section” _builder_version=”4.16″ background_color=”#27323a” custom_padding_tablet=”50px|0|50px|0″ transparent_background=”off” padding_mobile=”off” make_fullwidth=”off” use_custom_width=”off” width_unit=”on” global_colors_info=”{}” custom_padding_phone=”50px|0|50px|0″][et_pb_fullwidth_header title=”PTHAT changing speed on the fly example using Instant Commands” text_orientation=”center” content_max_width=”none” title_font_color=”#ffffff” admin_label=”Fullwidth Header” _builder_version=”4.16″ title_text_color=”#ffffff” title_font_size=”60″ background_color=”rgba(255, 255, 255, 0)” button_one_letter_spacing_hover=”0″ button_two_letter_spacing_hover=”0″ global_colors_info=”{}” button_one_text_size__hover_enabled=”off” button_two_text_size__hover_enabled=”off” button_one_text_color__hover_enabled=”off” button_two_text_color__hover_enabled=”off” button_one_border_width__hover_enabled=”off” button_two_border_width__hover_enabled=”off” button_one_border_color__hover_enabled=”off” button_two_border_color__hover_enabled=”off” button_one_border_radius__hover_enabled=”off” button_two_border_radius__hover_enabled=”off” button_one_letter_spacing__hover_enabled=”on” button_one_letter_spacing__hover=”0″ button_two_letter_spacing__hover_enabled=”on” button_two_letter_spacing__hover=”0″ button_one_bg_color__hover_enabled=”off” button_two_bg_color__hover_enabled=”off”][\/et_pb_fullwidth_header][\/et_pb_section][et_pb_section fb_built=”1″ custom_padding_last_edited=”on|desktop” admin_label=”section” _builder_version=”4.16″ background_color=”#313f55″ custom_padding_tablet=”50px|0|50px|0″ transparent_background=”off” padding_mobile=”off” make_fullwidth=”off” use_custom_width=”off” width_unit=”on” global_colors_info=”{}” custom_padding_phone=”50px|0|50px|0″][et_pb_row admin_label=”Row” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}” column_structure=”1_2,1_2″][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Text” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” background_layout=”dark” use_border_color=”off” border_color=”#ffffff” border_style=”solid” global_colors_info=”{}”]With this example, we show how to use the PTHAT being used to control the speed of a Closed Loop Servo motor and Closed Loop Stepper Motor.<\/span><\/p>\n

\u00a0<\/span>
\n[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/pthat.com\/wp-content\/uploads\/2017\/04\/imi.jpg” align_tablet=”center” align_last_edited=”on|desktop” admin_label=”Image” _builder_version=”4.16″ animation_style=”slide” animation_direction=”left” animation_duration=”500ms” animation_intensity_slide=”10%” use_border_color=”off” border_color=”#ffffff” border_style=”solid” animation=”left” sticky=”off” always_center_on_mobile=”on” global_colors_info=”{}” align_phone=”center”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=”Row” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}” column_structure=”1_2,1_2″][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Text” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” background_layout=”dark” use_border_color=”off” border_color=”#ffffff” border_style=”solid” global_colors_info=”{}”]Within the application you first connect to your Raspberry Pi serial port by clicking the Connect button.<\/span><\/p>\n

Now you can click on the Start button and the motor will spin up to the speed you have set by sending a Set Axis Command and a Start Axis Command.<\/span><\/p>\n

Changing the speed is easy, simply choose the resolution of the RPM you wish to use and click on the arrow keys. This will send a Change Speed on the Fly command and the motor will change it’s speed to the new speed that has been set.<\/span><\/p>\n

\u00a0<\/span>
\n[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/pthat.com\/wp-content\/uploads\/2017\/04\/RPM-On-FLY-Screenshot.jpg” show_in_lightbox=”on” align_tablet=”center” align_last_edited=”on|desktop” admin_label=”Image” _builder_version=”4.16″ animation_style=”slide” animation_direction=”left” animation_duration=”500ms” animation_intensity_slide=”10%” use_border_color=”off” border_color=”#ffffff” border_style=”solid” animation=”left” sticky=”off” always_center_on_mobile=”on” global_colors_info=”{}” align_phone=”center”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=”Row” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}” column_structure=”1_2,1_2″][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Text” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” background_layout=”dark” use_border_color=”off” border_color=”#ffffff” border_style=”solid” global_colors_info=”{}”]Commands used in this example are:<\/span><\/p>\nSet Axis Command
\n<\/span>
\n<\/span>\nStart Axis Command
\n<\/span>
\n<\/span>\nStop Axis Command
\n<\/span>
\n<\/span>\nPause\/Resume Axis Command
\n<\/span>
\n<\/span>\nChange Axis Speed on the fly Command
\n<\/span>
\n<\/span>\nRequest Firmware Version
\n<\/span>
\n<\/span>\n

Reset PTHAT
\n<\/span>
\n<\/span>
\n[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/pthat.com\/wp-content\/uploads\/2017\/04\/RPM-On-FLY-2.jpg” align_tablet=”center” align_last_edited=”on|desktop” admin_label=”Image” _builder_version=”4.16″ animation_style=”slide” animation_direction=”left” animation_duration=”500ms” animation_intensity_slide=”10%” use_border_color=”off” border_color=”#ffffff” border_style=”solid” animation=”left” sticky=”off” always_center_on_mobile=”on” global_colors_info=”{}” align_phone=”center”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=”Row” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}” column_structure=”1_2,1_2″][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Video” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” use_border_color=”off” border_color=”#ffffff” border_style=”solid” global_colors_info=”{}”]