You can put this device in your bedroom and you won't be disturbed by the light of the display. The display is only activated when you move your hand in front of the device and then it automatically goes off again.
- OLED display
- display turn on if you move your hand in front of it
- temperature and humidity sensor
- easy integration in own WiFi network (Hotspot settings-page)
- react dashboard
- REST API endpoint
- OTA updates
- ESP32 DEV Board
- SSD1306 (I use a 2.42 inch version)
- HC-SR04
- DHT22
- MAX 98357A (audio module)
- speaker
| Pin on Sensor | Pin on ESP32 |
|---|---|
| VCC | VIN (5V) |
| TRIG | GPIO 5 |
| ECHO | GPIO 18 |
| GND | GND |
| Pin on Sensor | description | Pin on ESP32 |
|---|---|---|
| GND | GND | |
| 5V | VIN (5V) | |
| SCK/SCL | SPI | GPIO 14 |
| MOSI/SDA | SPI | GPIO 13 |
| RES/RST | SPI | GPIO 17 |
| DC | SPI | GPIO 16 |
| CS | SPI | GPIO 15 |
| Pin on Sensor | Pin on ESP32 |
|---|---|
| 1 | 3V3 (3V) |
| 2 | GPIO 4 (analog) |
| 3 | - |
| 4 | GND |
| Pin on Sensor | Pin on ESP32 |
|---|---|
| LRC | GPIO 25 |
| BCLK | GPIO 26 |
| DIN | GPIO 22 |
| GAIN | - |
| SD | - |
| GND | GND |
| Vin | Vin (5V) |
| Pin on Sensor | description | Pin on ESP32 |
|---|---|---|
| GND | GND | |
| VCC | 3V3 (3V) | |
| MISO | SPI | GPIO 19 |
| MOSI/SDA | SPI | GPIO 23 |
| SCK/SCL | SPI | GPIO 18 |
| CS | SPI | GPIO 5 |
First change variable timeZone to your timezone. See timezone list for the correct value.
Later I will include this setting also to the dashboard.
GET /api/infoReturning an JSON object with following data:
| field | type | description |
|---|---|---|
| version | string | firmware version number |
| ------ | ----- | ------------ |
| system.deviceId | string | unique ID of the device |
| system.freeHeap | number | the free heap in bytes |
| system.uptime | number | uptime since last restart of the device in seconds |
| ------ | ----- | ------------ |
| fileSystem.totalBytes | number | total bytes of the FS |
| fileSystem.usedBytes | number | used bytes of the FS |
| ------ | ----- | ------------ |
| network.wifiRssi | number | |
| network.wifiQuality | number | quality of the WiFi connection in percent |
| network.wifiSsid | string | SSID of the current connected WiFi |
| network.ip | string | IP address of the device |
| network.mac | string | MAC address of the device |
| ------ | ----- | ------------ |
| values.temp | number | temperature in °C |
| values.humidity | number | humidity in percent |
| ------ | ----- | ------------ |
| player.isPlaying | boolean | TRUE: if a stream is currently playing |
| player.codec | string | name of the codec of the current stream (e.g. "MP3") |
| player.bitrate | number | bitrate of the current stream |
| player.volume | number (0..21) | volume of the current stream |
GET /api/settingsReturn the settings.json
POST /api/settingsChange settings. Send payload as JSON in body.
| field | type | default | description |
|---|---|---|---|
| screenOnDistance | number (0 - 255) | 18 cm | Specifies the distance from the ultrasonic sensor in centimeters from when the display should be switched on. |
| screenOnInterval | number | 8000 ms | Specifies the time in milliseconds that the display stays on after motion detection. |
POST /api/displayTurn on the display for the screenOnInterval time.
POST /api/restartPOST /api/hard-resetReset device to factory settings.
Warning: all files (~settings) will removed from the device. Need setup for connecting to your WiFi.
POST /api/player/startPayload
| field | type | default | description |
|---|---|---|---|
| source | string | URL of the streaming source (MP3, OGG, AAC, FLAC) | |
| file | string | path of the file on SD card | |
| volume | number (between 0 and 11) | volume level |
POST /api/player/volumePayload
| field | type | default | description |
|---|---|---|---|
| volume | number (between 0 and 11) | volume level |
POST /api/player/stop- SD Card support (for storing audio files)
- support of input button(s)
- extend REST API to turn on the display
- Move all settings to the dashboard