【Tuya Smart】Rhythm Array

project progress

• The IoT training camp project is underway at a snail’s pace
• The product has been iterated twice, and some completed projects have been redone, so the progress bar looks like it has rolled back.
• The LED has been upgraded to a smaller 35x35mm LED, with the same area and increased resolution to 8x8
• The position of the connector has been adjusted to allow room for larger batteries.
• The control panel adds a network distribution indicator function to make the display clearer when connecting to new wifi outdoors.
• In addition to C code, I will also try python to connect to Tuya in the future.
• Thank you for following the project. The progress of the sub-projects is as follows:
• ✅  2.0 schematic drawing
• ✅  2.0 PCB drawing
• ✅Tuya  product creation
• ✅  IoT DP customization
• ✅Debug  module purchase
• ✅  2.0 PCB proofing
• ⃞  PCB soldering <--- While participating in the ARTPI camp and the Tuya Temperature and Humidity Camp, I bought a bunch of ink screens to study. The priority of this big pit project will be temporarily lowered.
• ✅  LED light panel quality debugging
• ⃞Control  board programming and debugging
• ⃞Shell  modeling (the shell needs to be updated iteratively)
• ⃞Shell  printing
• ⃞Shell  assembly
• ✅  MCU/module network configuration function
• ✅  MCU control debugging
• ⃞MCU  programming to realize various functions
• ⃞  APP panel customization
• ⃞Small  program development

Device definition (function, scene)

• Props for outdoor parties
• Handheld LED light cube
• 5.5 x 5.5 x 1.8 cm size (1/3 Rubik's Cube size).
• There are only switch controls on the device, and the rest of the controls are done through the mobile phone
• Display color
• Display pattern
• show animation
• rhythm flash

software development

• Software open source address: https://github.com/Tairraos/XMatrix
• MCU control program (Arduino C, network configuration, message sending and receiving code, LED control code, based on Tuya MCU SDK)
• Tuya public version APP panel customization (React Native, developed based on Tuya panel SDK)
• APP applet version (Javascript, developed based on Tuya applet SDK)
• The above public version apps and mini programs can control the device

Function to be iterated

• Add FM reception, small power amplifier and speakers
• During the party, choose to join the party group and become a slave.
• The host can issue patterns and flashing effects
• Fully sync the host's settings from Opportunity
• The host can deliver music
• Play music from Opportunity Unity
• The more slave units, the louder the volume. Outdoor parties don’t need large audio equipment. Several people can have consistent music.
• In order to ensure that the sound is not delayed, the host music is transmitted by FM
• The transmitting device is also the same size
• The host is composed of mobile phone APP + launching device

hardware design

• Tuya WBR3 (WB3S optional) module transparent transmission, MCU solution
• 8 x 8 W2812 mini, 35x35mm full color LED display
• In order to maintain the volume, it is designed in two PCBs, and the USB-UART is external
• TP4056 1A charging circuit
• Powered by single lithium battery, 803040 battery, 1200mah
• Low voltage drop LDO, ME2019, 260mv voltage drop
• External burning interface ( https://oshwhub.com/Xiaole.Tao/esp-air-burnner )
• MCU uses ESP 8266 07S (without antenna, cheap, ARM M3, supports multiple programming languages, C, Arduino, Python, JS, Lua)
• The battery comes with charge and discharge protection

Program function design

• Performance mode: LED full brightness mode/rhythm flashing mode/LED pattern mode/pattern flashing mode/animation mode
• Brightness adjustment: 10 - 100% step 10%
• Color effect: solid color/breathing color/flowing water color changing
• Color settings: Choose a solid color from the in-app palette, or a breathing color-changing sequence. The water changes color and flows in rainbow colors
• Flashing rhythm: 1 second/1/2 second... more. (Environment detection rhythm, add a microphone to detect environmental sound sampling, this version does not do it)
• Display pattern: numbers 0-9, heart, up, down, left and right arrows, cross
• Display animation: beating heart, arrow sliding, cross size change, number sliding
• Custom pattern: draw your own pattern on the 8x8 square grid in the app, which is not available in this version.

APP panel definition

• Solid color control is to adjust the color palette and click to select the color.
• Pattern selection as icon click
• After rhythm selection, a red dot flashes on the right side for visualization.
• WeChat Mini Program Alternative

Physical pictures of version 1.0, version 1.5 not taken, 2.0 PCB on the way

Lithium battery driven

Control board burning and debugging (magnetic burner  https://oshwhub.com/Xiaole.Tao/esp-air-burnner )