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https://github.com/sinedied/esp-led-timer
64x32 led matrix timer for conferences with remote WiFi control, based on ESP8266/ESP32
https://github.com/sinedied/esp-led-timer
esp32 esp8266 led matrix remote timer wifi
Last synced: 10 days ago
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64x32 led matrix timer for conferences with remote WiFi control, based on ESP8266/ESP32
- Host: GitHub
- URL: https://github.com/sinedied/esp-led-timer
- Owner: sinedied
- License: gpl-3.0
- Created: 2023-03-19T17:26:05.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-06-03T14:48:33.000Z (5 months ago)
- Last Synced: 2024-10-15T06:01:14.591Z (22 days ago)
- Topics: esp32, esp8266, led, matrix, remote, timer, wifi
- Language: C
- Homepage:
- Size: 9.28 MB
- Stars: 4
- Watchers: 3
- Forks: 1
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# ⏰ esp-led-timer
> 64x32 led matrix timer for conferences with remote WiFi control, based on ESP8266/ESP32.
[](https://youtu.be/CDZh9LY9HXI)
*Note: time countdown is accelerated x100 in the video.*
## Assembly guide
You can find a detailed step-by-step assembly guide [here](./docs/assembly.md).
## Components used
- 64x32 P4 LED Panel [aliexpress](https://aliexpress.com/item/1005004050044228.html)
- ESP32 CH340 Type-C [aliexpress, make sure to pick the right one](https://aliexpress.com/item/1005004616357165.html)
- 2m USB-C cable [aliexpress, make sure to pick the right one](https://aliexpress.com/item/1005004215823904.html)
- 20W USB-C Charger [aliexpress](https://aliexpress.com/item/1005001875465341.html)
- 10cm M-F Dupont Cable 40pin [aliexpress, make sure to pick the right one](https://aliexpress.com/item/1005004073424751.html)
- 10cm F-F Dupont Cable 40pin [aliexpress, make sure to pick the right one](https://aliexpress.com/item/1005004073424751.html)
- 20cm F-F Dupont Cable 40pin [aliexpress, make sure to pick the right one](https://aliexpress.com/item/1005004073424751.html)
- Push button kit [aliexpress](https://aliexpress.com/item/1005005012663073.html)
**Total:** about 30 euros
## Wiring diagram
Connect panel input (PI) and and panel output (PO) like this:
PI | PO
---|---
R1 | R0
G0 | R1
G1 | G0
B0 | G1
B1 | B0
Connect panel input (PI) to the ESP8266 or ESP32 like this:
PI | ESP8266 GPIO | ESP32 GPIO
--------|--------------|------------
A | 05 - (D1) | 19
B | 04 - (D2) | 23
C | 15 - (D8) | 18
D | 12 - (D6) | 5
STB/LAT | 16 - (D0) | 22
P_OE | 02 - (D4) | 16
CLK | 14 - (D5) | 14
R0 | 13 - (D7) | 13
Connect push button pins to the ESP8266 or ESP32 like this:
BUTTON | ESP8266 GPIO | ESP32 GPIO
-------|--------------|------------
L | RX - (D9) | RX0
R | GND | GND
## 3D printed case
You'll find a parameterized case model in `case/case.scad`.
You can customize and compile this file into an STL using [OpenSCAD](https://openscad.org).
I recommend to set `test_print` to true in the customizer ("Other" tab) and first print these test models to test and adapt the `tolerance` value for your printer (higher = more loose fit, smaller = tighter fit).
This model makes use of the BOSL2 library, see [instructions here](https://github.com/revarbat/BOSL2) for how to install it.
## Building project
This project is built using [VS Code](https://code.visualstudio.com/) and [PlatformIO](https://platformio.org/).
Once loaded, Platform IO will download the platform SDK and dependencies automatically, then you'll be able to build and upload the project to your ESP.
> You update the `platformio.ini` file to change the board type and platform, this project is compatible with both ESP8266 and ESP32 boards.
## How to use
- **Push button:** start/stop timer
- **Long press (1s)**: reset timer
- **Double press**: next mode
- **Triple press**: change brightness
Modes cycles between the logo/screensaver and the differents timers.
When the timer is not running, the logo/screensaver will be automatically activated after 5 minutes without touching any button.
### Special commands
- **Hold button for 5s**: enable/disable WiFi AP
- **Hold button for 10s**: reset all settings and reboot
- **5x press**: toggle x100 time acceleration (for demo/testing purposes)
When WiFi is enabled, the device will create an access point with the name "Timer" by default. Connect to it, and you should be presented with a captive portal to control and configure the device.
## Updating bitmaps
To generate the bitmap arrays for images, I used [image2cpp](https://javl.github.io/image2cpp/).
Make sure to set RGB565 format and change the type to `uint16_t static` instead of `const uint16_t`, otherwise the app will crash.
The bitmaps are located in `src/bitmaps.h`.
For drawing the bitmaps I used [PixiArt](https://www.pixilart.com/draw).