update README

Author: 5iri

5_line_following/README.md

@@ -137,4 +137,12 @@ Integral Term = Ki*(Cumulative Error)
     ```
     **Description** : Starts an HTTP server that allows remote tuning of PID parameters via a web interface
 
-    **Parameters** : None
+    **Parameters** : None
+
+## Default PWM Settings (Wall‑Ev2.7)
+
+- Recommended base and bounds for motor duty cycles:
+  - `optimum_duty_cycle = 40`
+  - `lower_duty_cycle = 10`
+  - `higher_duty_cycle = 55`
+- Update these in `5_line_following/main/line_following.c` to match your bot.

6_self_balancing/README.md

@@ -126,3 +126,10 @@ Integral Term = ki*(Integral_Error)
     * `mpu_offset` : mpu_offsets are the initial accelerometer angles at rest position
 
     **Return** : returns ESP_OK if calculate angles correctly else return ESP_FAIL if any error occurs
+
+## Default PWM Settings (Wall‑Ev2.7)
+
+- Recommended duty cycle bounds for motors while balancing:
+  - `MAX_PWM = 60`
+  - `MIN_PWM = 30`
+- Adjust in code at `6_self_balancing/main/self_balancing.c` if your hardware differs.

README.md

@@ -85,6 +85,21 @@ The Wall-E workshop focuses on the concepts of line-following and self-balancing
 
 <!-- ROADMAP -->
 
+## Wall‑Ev2.7 Motor PWM Settings
+
+- Self‑Balancing (duty cycle bounds)
+  - `MAX_PWM = 60`
+  - `MIN_PWM = 30`
+- Line‑Following (base and bounds)
+  - `optimum_duty_cycle = 40`
+  - `lower_duty_cycle = 10`
+  - `higher_duty_cycle = 55`
+
+Code locations for these defaults:
+- Self‑Balancing: `6_self_balancing/main/self_balancing.c`
+- Line‑Following: `5_line_following/main/line_following.c`
+
+
 ## Resources
 
 - Please visit and look at our [Custom-made SRA development board](https://github.com/SRA-VJTI/sra-board-hardware-design)
@@ -125,4 +140,3 @@ Contributions are what make the open source community such an amazing place to b
 [license-shield]: https://img.shields.io/github/license/SRA-VJTI/Wall-E
 [license-url]: https://github.com/SRA-VJTI/Wall-E/blob/master/LICENSE
 
-