From 68dde0951ab3f7f2d203450464f7975fe1a29804 Mon Sep 17 00:00:00 2001
From: Jake <realrobotshk@gmail.com>
Date: Sat, 26 Jul 2025 00:15:40 +0800
Subject: [PATCH] added remove receiver code

---
 index.html | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)

diff --git a/index.html b/index.html
index 00c0f02..d09a663 100644
--- a/index.html
+++ b/index.html
@@ -30,6 +30,7 @@
             <button class="tab-btn text-gray-600 hover:text-blue-600" data-target="lesson8">Sonar</button>
             <button class="tab-btn text-gray-600 hover:text-blue-600 hidden" data-target="lesson9">Motor
                 Encoders</button>
+            <button class="tab-btn text-gray-600 hover:text-blue-600" data-target="lesson10">Reciever</button>
             <!-- Add more tabs here -->
         </div>
     </div>
@@ -985,6 +986,105 @@ while True:
 
         </section>
 
+
+        <!-- Lesson 6 (hidden initially) -->
+        <section id="lesson10" class="lesson-content hidden">
+            <h1 class="text-3xl font-bold mb-6">Receiver</h1>
+
+            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
+
+                
+
+                <!-- Step 2 -->
+                <div class="prose">
+                    <h2>Step 1: Coding</h2>
+                    <p>Create a new file called <code>remote.py</code> and add the code to the right.</p>
+                </div>
+                <div>
+                    <pre class="bg-gray-100 p-4 rounded shadow text-sm"><code class="language-python">
+# remote.py
+
+import board
+import busio
+
+START_BYTE = 0xAA
+END_BYTE = 0xBB
+PACKET_LENGTH = 8
+
+# Calibration values
+LEFT_MIN = 0
+LEFT_MID = 131
+LEFT_MAX = 203
+RIGHT_MIN = 51
+RIGHT_MID = 120
+RIGHT_MAX = 255
+
+class ThumbInput:
+    def __init__(self, tx=board.GP0, rx=board.GP1, baudrate=115200):
+        self.uart = busio.UART(tx=tx, rx=rx, baudrate=baudrate, timeout=0.1)
+        self.buffer = bytearray()
+
+    def read(self):
+        """Returns (left_percent, right_percent) in range [-100, 100], or None if packet incomplete."""
+        data = self.uart.read(1)
+
+        if data:
+            byte = data[0]
+            self.buffer.append(byte)
+
+            if len(self.buffer) > PACKET_LENGTH:
+                self.buffer = self.buffer[-PACKET_LENGTH:]
+
+            if len(self.buffer) == PACKET_LENGTH and self.buffer[0] == START_BYTE and self.buffer[-1] == END_BYTE:
+                payload = self.buffer[1:7]
+                self.buffer = bytearray()
+                left_raw = payload[1]
+                right_raw = payload[3]
+
+                left = self._map_thumbstick(left_raw, LEFT_MIN, LEFT_MID, LEFT_MAX)
+                right = self._map_thumbstick(right_raw, RIGHT_MIN, RIGHT_MID, RIGHT_MAX)
+
+                return (int(left), int(right))
+
+        return None
+
+    def _map_thumbstick(self, x, min_val, mid_val, max_val):
+        if x < mid_val:
+            return (x - mid_val) / (mid_val - min_val) * 100
+        else:
+            return (x - mid_val) / (max_val - mid_val) * 100
+
+</code></pre>
+                </div>
+
+                <!-- Step 3 -->
+                <div class="prose">
+                    <h2>Step 2: Using the recieved signal</h2>
+                    <p>Import just the <code>ThumbInput</code> part of the library.</p>
+                </br>
+                <p>Initialize the receiver with <code>receiver = ThumbInput()</code></p>
+            </br>
+            <p>Create a new loop as this won't work nicely with any i2c, this loop should be placed after the motors are created, and before the i2c is initialized.</p>
+                </div>
+                <div>
+                    <pre class="bg-gray-100 p-4 rounded shadow text-sm"><code class="language-python">
+
+from remote import ThumbInput
+
+receiver = ThumbInput()
+
+while True:
+    result = receiver.read()
+    if result:
+        left_motor.move(result[0])
+        right_motor.move(result[1])
+        #print("Left:", result[0], "Right:", result[1])
+    time.sleep(0.001)
+</code></pre>
+                </div>
+
+        </section>
+
     </div>
     <script>
         // Tab button logic