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--- projekte:ai_core-stewart_platform:start [13.05.2019 20:46]
127.0.0.1 Externe Bearbeitung
+++ projekte:ai_core-stewart_platform:start [10.09.2019 13:00] (aktuell)
Espy moved drv8847 datasheet one layer down
@@ Zeile 1: / Zeile 1: @@
+====== AiCore - StewartPlatform ======
-====== AiCore-StewartPlatform ======
 A hexapod alias stewart platform, to hold and move the eye of the Portal AiCore.
 ======= Idea =======
+The reason for using a Stewart platform in this case was very clear,
+as the original ingame model of the AI-Core uses such a platform as a holder for the "eye".
+======= Used Hardware List =======
-======= Hardware List =======
+  * Arduino Nano
+  * micro stepper - DC 3-5v 2-phase 4-wire motor with mini linear screw slider
+  * PCA9685 - 16-channel, 12-bit PWM Fm+ I2C-bus LED controller
-  *  Arduino Nano
+    * [[https://www.nxp.com/products/power-management/lighting-driver-and-controller-ics/ic-led-controllers/16-channel-12-bit-pwm-fm-plus-ic-bus-led-controller:PCA9685|PCA9685 - Product page]]
-  *  DC 3-5v 2-phase 4-wire micro stepper motor mini linear screw slider
+    * [[https://www.nxp.com/docs/en/data-sheet/PCA9685.pdf|PCA9685 - Datasheet]]
-  *  2 Channel DRV8833 DC Motor Driver Module 3V-10V 1.5A H-Bridge
+    * [[https://www.nxp.com/docs/en/application-note/AN10441.pdf|PCA9685 - Application note]]
-  *  PCF8575 IIC I2C I/O Extension Shield Module 16 bit
+  * PCA9629A - Fm+ I2C-bus stepper motor controller
+    * [[https://www.nxp.com/docs/en/data-sheet/PCA9629A.pdf|PCA9629A - Datasheet]]
+    * [[https://www.nxp.com/docs/en/application-note/AN11483.pdf|PCA9629A - Application Note]]
-======= Soon™ =======
+  * DRV8833 - 2 Channel DC Motor Driver Module 3V-10V 1.5A H-Bridge
+    * [[https://www.ti.com/lit/ds/symlink/drv8833.pdf|DRV8833 - Datasheet]]
+    * [[https://learn.adafruit.com/adafruit-drv8833-dc-stepper-motor-driver-breakout-board/overview | Adafruit - DRV8833 DC/Stepper Motor Driver Breakout Board]]
+  * DRV8847S - Dual H-BridgeMotorDriver (S-Version has i2c Diagnostics)
+    * [[https://www.ti.com/lit/ds/symlink/drv8847.pdf|DRV8847 - Dual H-BridgeMotorDriver]]
+  * PCF8575 - IIC I2C I/O Extension Shield Module 16 bit
+    * [[https://www.nxp.com/docs/en/data-sheet/PCF8575.pdf|PCF8575 - Datasheet]]
+    * [[https://www.mikrocontroller.net/articles/Port-Expander_PCF8574|PCF8574 Port-Expander 8 I/O - mikrocontroller.net]]
 ======= First development breadboard build =======
+The first test setup consisted of 6 micro servos, a PCA9685 (i2c, 16 channel pwm driver), Arduino Nano and a 3D printed model of the platform itself.
+======= Part details =======
-======= Photos =======
+===== Micro-Stepper =====
+==== Specs ====
+  * Pin definition: A+ B+ A- B-
+  * Phase resistance: 30 ohm
+  * Voltage: DC 3V-5V
+==== Measurements ====
+{{:projekte:ai_core-stewart_platform:canon_micro_stepper_3-5v_measurements_s-l1600.jpg?nolink&300| }}
+{{:projekte:ai_core-stewart_platform:canon_micro_stepper_3-5v_holes_s-l1600.jpg?nolink&300| }}
+==== Sides ====
+{{:projekte:ai_core-stewart_platform:canon_micro_stepper_3-5v_front_s-l1600.jpg?nolink&200| }}
+{{:projekte:ai_core-stewart_platform:canon_micro_stepper_3-5v_back_s-l1600.jpg?nolink&200| }}
+{{:projekte:ai_core-stewart_platform:canon_micro_stepper_3-5v_under_s-l1600.jpg?nolink&200| }}
 ======= Links =======
   * **Reference**
     * [[https://en.wikipedia.org/wiki/Stewart_platform|Stewart platform From Wikipedia, the free encyclopedia]]
-  * **Hardware**
-    *  [[https://www.mikrocontroller.net/articles/Port-Expander_PCF8574|PCF8574 Port-Expander 8 I/O - mikrocontroller.net]]
-    *  [[http://www.ti.com/lit/ds/symlink/pcf8575.pdf|PCF8575 Port-Expander 16 I/O - PDF]]

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