Differences

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--- talkingshoe [2025/08/10 19:06] – created andi
+++ talkingshoe [2025/08/10 20:29] (current) – [Accelleration Sensor: ADXL345] andi
@@ Line 1: / Line 1: @@
 ====== Talking Shoe ======
-===== Micro Controller =====
+===== Micro Controller: Lolin32 Lite =====
+{{ :shoe:lolin32.svg?1000 }}
-  * Lolin32 Lite with a ESP-32 chip
-  * Connects via Micro USB to PC, not USB-C
   * Has battery charger built in
   * Amazon Reviewer says to use ESP32 Arduino -> WEMOS LOLIN32 board
@@ Line 31: / Line 32: @@
 </code>
+===== MP3 Player: DFPlayer Mini =====
+{{ :shoe:dfplayer.svg?400 }}
+  * [[https://wiki.dfrobot.com/dfplayer_mini_sku_dfr0299|Wiki Entry]]
+    * We probably can connect our speaker directly to the SPK pins
+    * We can read the BUSY line to know if something is playing
+      * high = busy
+    * There are three modes.
+      * We probably want to use the Serial Mode to directly play a certain file
+        * this means we connect the UART pins between the ESP and the Player
+      * Theres sample code in the wiki
+    * Filenames: ''/MP3/0001.mp3''
+  * [[https://github.com/DFRobot/DFRobotDFPlayerMini|Github Repo]] for Arduino Lib
+    * Arduino IDE has "DFRobotDFPlayerMini" in the list of libraries
+      * alternatively one seems to be able to download the zip from github and simply add it via Sketch -> Include Library -> Add .ZIP library
+    * There are a whole bunch of other libraries when you search for DFPlayer...
+      * some of them seem to be newer than the original
+      * some of them might make handling other stuff while playing sound easier
+===== Accelleration Sensor: ADXL345 =====
+{{ :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
+===== IR Opto-Switch =====
+  * 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
+    * gotta figure out how to connect the sensor