Differences

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--- talkingshoe [2025/08/10 20:18] – andi
+++ talkingshoe [2025/09/08 17:36] (current) – [Table] andi
@@ Line 1: / Line 1: @@
 ====== Talking Shoe ======
+https://github.com/moink/talking_shoe
+^ Lolin-Port  ^ Part-Port                              ^ Part            ^
+| GPIO23      | SDA                                    | ADXL345         |
+| GPIO19      | SCL                                    | ADXL345         |
+| GPIO17      | RX                                     | DFPlayer        |
+| GPIO16      | TX                                     | DFPlayer        |
+| GPIO34      | Resistor Leg, but not on the Resistor  | Photo Resistor  |
 ===== Micro Controller: Lolin32 Lite =====
@@ Line 57: / Line 68: @@
 {{ :shoe:adxl345.svg?300 }}
+  * [[https://learn.adafruit.com/adxl345-digital-accelerometer/overview|Lots of Details at Adafruit]]
+  * We want to connect to this via the i2c bus
+  * There's an ADXL345 Library by Adafruit, but also by others
+===== Photo Resistor =====
+<code>
+.3V ── LDR ──+─── GPIO34 (A0)
+              │
+kΩ
+              │
+             GND
+</code>
+===== IR Opto-Switch =====
+**we're not using this one**
+  * I bought [[amazon.de>B00EFOTJZE]] these
+  * I think we should be able to simply connect them to two GPIO pins
+    * actually the emitter can probably be just powered permanently
+      * not sure if I need a resistor, the Amazon page contains really shitty translations
+      * I should hook up one of the diodes to my component tester
+      * actually based on the given foward voltage and current, according to an online calculator I need resistor of about 70ohm
+  * The sensor is a VS 1838B
+<code>
+   _____
+  |     |
+  |     |
+  |     |
+  |     |
+  |_____|
+   | | |
+2 3
+: OUT (Signal)
+: GND
+: VCC (typically 3.3–5V)
+</code>