Demo - use YX5200 to create sounds for the strongman carnival ring the bell game.
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This will create sounds for the strongman carnival ring the bell game.
There will be two LOW-active inputs (either from buttons or another processor):
- when the mallet hits to start the weight climbing
- when the weight rings the bell at the top
It is silent until it sees the mallet hit.
Then it starts a rising sound of finite duration.
- If the "ring the bell" input happens while the rising sound is active, the sound is interrupted and the ring the bell sound starts. That sound continues until it finishes.
- If the rising sound finishes before the "ring the bell" sound, then silence until another input happens.
There are two ways to compile, which use different I/O pins:
- as an ESP32 (but not ESP32-S3 which uses different pins; only exception I know)
- as an Arduino Nano or Uno
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Wondering if the ESP32 UART problems were from not using the ESP-specific software serial library
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If compiled for an ESP32, the code will include the Over-The-Air Update (OTA) capability. By default, this is implemented so it is always-on, not requiring the ESP-NOW commands from the following descriptions (which are from other projects) nor the optional button push.
- https://github.com/Mark-MDO47/DuelWithBanjos/blob/master/code/DuelWithBanjos/OTA_story.md
- https://github.com/Mark-MDO47/UniRemote/blob/master/code/mdo_use_ota_webupdater/README.md
NOTE: The Arduino Nano and Arduino Uno do not natively support this OTA capability.
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This "schematic wiring diagram" shows connections for both the Arduino Nano and an ESP32 development board.
- I sometimes call my schematics "schematic wiring diagrams" because I don't follow the rules of the standards organizations, although I reserve the right to just call them schematics.
- I show all the connections as wires and show the pins of chips/modules all together and arranged the same as physical top view instead of separated/organized by function since I use my "schematic" to do the actual wiring of my project.
- I tend to forget to hook up some of the power and ground connections if I use the standard schematic methods instead of showing the wire.
Notes
- I did not show a switch/button for the ESP32 OTA control signal since the code is configured to automatically prepare that without input
- The 1K resistor in the path to the YX5200 RX line prevents coupling of digital noise into the sound output
- I did not include external power for these prototype designs; I assume they will be powered from the USB
- I have a reliable version for Nano/Uno and for ESP32, plus two ESP32 variations that do not work reliably
- The reliable ESP32 variation uses a SN74HCT125N to do voltage level translation for the UART interface
- I am using resistors to drop the voltage from YX5200 5V to ESP32 3.3V (to avoid damage to ESP32)
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Here with a Nano/Uno and with the YX5200 using 5V for power and 5V on the UART interface - works reliably.
// NANO (and UNO) pin definitions:
//
// Control inputs for Sound Processing - these two are GPIO pins with internal pull-up capability
// NANO (or UNO) pin D-04 DPIN_MALLET_HIT when it goes LOW
// NANO (or UNO) pin D-06 DPIN_RING_BELL when it goes LOW
//
// YX5200/DFPlayer Sound Player
// NANO (or UNO) pin D-10 DPIN_SRL_RX Arduino RX; YX5200 TX - 9600 Baud
// NANO (or UNO) pin D-11 DPIN_SRL_TX Arduino TX; YX5200 RX - 9600 Baud
// NANO (or UNO) pin D-12 DPIN_AUDIO_BUSY YX5200 BUSY; HIGH when audio finishes
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Here with an ESP32 and with the YX5200 using 5V for power and 5V on the UART interface - works reliably.
// ESP32 pin definitions:
// NOTE: these are good pins for most ESP32 - see https://randomnerdtutorials.com/esp32-pinout-reference-gpios/
// If using an ESP32-S3, see https://randomnerdtutorials.com/esp32-s3-devkitc-pinout-guide/ and make any
// needed adjustments.
//
// Control inputs for Sound Processing - these two are GPIO pins with internal pull-up capability
// ESP32 Dev Module pin D-13 DPIN_MALLET_HIT when it goes LOW
// ESP32 Dev Module pin D-27 DPIN_RING_BELL when it goes LOW
//
// YX5200/DFPlayer Sound Player
// ESP32 Dev Module pin D-16 DPIN_SRL_RX Arduino RX; YX5200 TX - 9600 Baud
// ESP32 Dev Module pin D-17 DPIN_SRL_TX Arduino TX; YX5200 RX - 9600 Baud
// ESP32 Dev Module pin D-23 DPIN_AUDIO_BUSY YX5200 BUSY; HIGH when audio finishes
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Here with an ESP32 and with the YX5200 using 5V for power and 3.3V on the UART interface - not reliable. The YX5200 often ignores commands from the ESP32.
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Here with an ESP32 and with the YX5200 using 3.3V for power and 3.3V on the UART interface - not reliable. The YX5200 often ignores commands from the ESP32.
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The code is in the ./code/ area split into several directories. The *.ino file is in ./code/RingTheBell/RingTheBell.ino.
A directory of the code can be found here:
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The sounds and a description of how to create/adjust sounds and how to copy them to the MicroSD card for the YX5200 can be found here:
| Title | Descrip | URL | each |
|---|---|---|---|
| ESP32 | 1 @ ESP32 Devkit V1 ESP-WROOM-32 (or just about any ESP32 WiFi capable module except an ESP-32-S3) | https://www.amazon.com/Hosyond-ESP-WROOM-32-Development-Microcontroller-Compatible/dp/B0C7C2HQ7P/ref=sr_1_4 | $3.50 |
| YX5200 | 1 @ Sound Module with MicroSD (TF) card socket | https://www.amazon.com/Organizer-YX5200-DFPlayer-Supporting-Arduino/dp/B07XXYQBNS/ref=sr_1_1 | $2.00 |
| MicroSD card | 1 @ 32GByte or smaller MicroSD card formatted as FAT32; shown is 16GB example | https://www.amazon.com/dp/B08KSSX9PH | $3.75 |
| speaker | Metal Shell Round Internal Magnet Speaker 2W 8 Ohm approx 1 inch | https://www.amazon.com/dp/B0177ABRQ6 | $2.80 |
| resistors | 1 @ 1.0-KOhm 1/4 watt through-hole resistors | https://www.digikey.com/en/products/detail/stackpole-electronics-inc/CF14JT1K00/1741314 | $0.10 |
| resistors | 2 @ 3.3-KOhm 1/4 watt through-hole resistors | https://www.digikey.com/en/products/detail/stackpole-electronics-inc/CF14JT3K30/1741376 | $0.10 |
| resistors | 2 @ 6.65-KOhm 1/4 watt through-hole resistors | https://www.digikey.com/en/products/detail/stackpole-electronics-inc/RNF14FTD6K65/1682364 | $0.10 |
| SN74HCT125N | 1 @ Non-inverting 5.5V buffer 14-pin DIP | https://www.digikey.com/en/products/detail/texas-instruments/SN74HCT125N/376860 | $0.63 |
| Title | Descrip | URL | each |
|---|---|---|---|
| NANO | Arduino NANO (or UNO) or clone | https://www.aliexpress.us/item/3256805941736729.html | $1.40 |
| YX5200 | 1 @ Sound Module with MicroSD (TF) card socket | https://www.amazon.com/Organizer-YX5200-DFPlayer-Supporting-Arduino/dp/B07XXYQBNS/ref=sr_1_1 | $2.00 |
| MicroSD card | 1 @ 32GByte or smaller MicroSD card formatted as FAT32; shown is 16GB example | https://www.amazon.com/dp/B08KSSX9PH | $3.75 |
| speaker | Metal Shell Round Internal Magnet Speaker 2W 8 Ohm approx 1 inch | https://www.amazon.com/dp/B0177ABRQ6 | $2.80 |
| resistors | 1 @ 1.0-KOhm 1/4 watt through-hole resistors | https://www.digikey.com/en/products/detail/stackpole-electronics-inc/CF14JT1K00/1741314 | $0.10 |