add battery-keypad-controller usermod

usermods/battery_keypad_controller/README.md

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+# Battery powered controller with keypad
+
+I'm using this controller for a festival totem. Runs on 3 18650 Cells, can deliver >5A current.
+
+Via keypad one can select 8 presets, change effect, effect speed, effect intensity and palette. Brightness can be
+adjusted with a potentiometer.
+
+
+## Pictures
+
+![bat-key-ctrl-1](assets/bat-key-ctrl-1.jpg)
+![bat-key-ctrl-2](assets/bat-key-ctrl-2.jpg)
+![bat-key-ctrl-3](assets/bat-key-ctrl-3.jpg)

usermods/battery_keypad_controller/wled06_usermod.ino

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+/*
+ *  WLED usermod for keypad and brightness-pot.
+ *  3'2020 https://github.com/hobbyquaker
+ */
+
+#include <Keypad.h>
+const byte keypad_rows = 4;
+const byte keypad_cols = 4;
+char keypad_keys[keypad_rows][keypad_cols] = {
+        {'1', '2', '3', 'A'},
+        {'4', '5', '6', 'B'},
+        {'7', '8', '9', 'C'},
+        {'*', '0', '#', 'D'}
+};
+
+byte keypad_colPins[keypad_rows] = {D3, D2, D1, D0};
+byte keypad_rowPins[keypad_cols] = {D7, D6, D5, D4};
+
+Keypad myKeypad = Keypad(makeKeymap(keypad_keys), keypad_rowPins, keypad_colPins, keypad_rows, keypad_cols);
+
+void userSetup()
+{
+
+}
+
+void userConnected()
+{
+
+}
+
+long lastTime = 0;
+int delayMs = 20; //we want to do something every 2 seconds
+
+void userLoop()
+{
+    if (millis()-lastTime > delayMs)
+    {
+
+        long analog = analogRead(0);
+        int new_bri = 1;
+        if (analog > 900) {
+            new_bri = 255;
+        } else if (analog > 30) {
+            new_bri = dim8_video(map(analog, 31, 900, 16, 255));
+        }
+        if (bri != new_bri) {
+            bri = new_bri;
+            colorUpdated(1);
+
+        }
+
+        char myKey = myKeypad.getKey();
+        if (myKey != NULL) {
+            switch (myKey) {
+                case '1':
+                    applyPreset(1);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '2':
+                    applyPreset(2);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '3':
+                    applyPreset(3);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '4':
+                    applyPreset(4);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '5':
+                    applyPreset(5);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '6':
+                    applyPreset(6);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case 'A':
+                    applyPreset(7);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case 'B':
+                    applyPreset(8);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+
+                case '7':
+                    effectCurrent += 1;
+                    if (effectCurrent >= MODE_COUNT) effectCurrent = 0;
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '*':
+                    effectCurrent -= 1;
+                    if (effectCurrent < 0) effectCurrent = (MODE_COUNT-1);
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+
+                case '8':
+                    if (effectSpeed < 240) {
+                        effectSpeed += 12;
+                    } else if (effectSpeed < 255) {
+                        effectSpeed += 1;
+                    }
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '0':
+                    if (effectSpeed > 15) {
+                        effectSpeed -= 12;
+                    } else if (effectSpeed > 0) {
+                        effectSpeed -= 1;
+                    }
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+
+                case '9':
+                    if (effectIntensity < 240) {
+                        effectIntensity += 12;
+                    } else if (effectIntensity < 255) {
+                        effectIntensity += 1;
+                    }
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case '#':
+                    if (effectIntensity > 15) {
+                        effectIntensity -= 12;
+                    } else if (effectIntensity > 0) {
+                        effectIntensity -= 1;
+                    }
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+
+                case 'C':
+                    effectPalette += 1;
+                    if (effectPalette >= 50) effectPalette = 0;
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                case 'D':
+                    effectPalette -= 1;
+                    if (effectPalette <= 0) effectPalette = 50;
+                    colorUpdated(NOTIFIER_CALL_MODE_FX_CHANGED);
+                    break;
+                    break;
+
+            }
+
+        }
+
+        lastTime = millis();
+    }
+
+}