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--- en:iot-open:remotelab:sut:generalpurpose:b3 [2018/10/31 18:21] – pczekalski
+++ en:iot-open:remotelab:sut:generalpurpose:b3 [2020/07/20 12:00] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+==== Controling fan rotation using PWM and spindle gauge ====
+//Easy scenario. Students should change of fan rotation in the lab. Warning: directly observed fan rotation is impossible (due net lag)//
+=== Target group ===
+//This hands-on lab guide is intended for the Beginners.//
+=== Prerequisites ===
+//Generally students need understand voltage controlled by PWM. For realising scenario, students need access to documentation PWM register.//
+=== Scenario ===
+  - using schematic, check fan connection,
+  - using ESP documentation check registers with PWM controling,
+  - write the program which:
+  * send value 0 as duty of PWM,
+  * wait 15 seconds,
+  * send value 50 as duty of PWM,
+  * wait 15 seconds,
+  * send value 100 as duty of PWM.
+  - using the camera observe spindle gauge.
+  - You can use other wait time and value of duty, but wait time should allow observe effect by camera (against net lag)
+=== Result ===
+//On display should be visible value of effective voltage on fan.//
+=== Start ===
+//Check the start effective voltage.//
+=== Steps ===
+Instead using built-in PWM, you can send "0" and "1" for obtain required duty factor.
+=== Result validation ===
+Only way for validation is check spindle gauge by camera.
+=== FAQ ===
+This section is to be extended as new questions appear. \\
+When using the printed version of this manual please refer to the latest online version of this document to obtain the valid and up-to-date list of the FAQ.
+//Provide some FAQs in the following form:\\
+**Question?**: Answer.
+//