https://github.com/obono/speakerstimer

A speaker timer by Arduino Pro Mini.
https://github.com/obono/speakerstimer

7segments arduino electronics irremote

Last synced: 13 days ago
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A speaker timer by Arduino Pro Mini.

• Host: GitHub
• URL: https://github.com/obono/speakerstimer
• Owner: obono
• License: mit
• Created: 2020-12-26T05:03:56.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2024-01-27T08:33:56.000Z (11 months ago)
• Last Synced: 2024-01-27T09:26:50.353Z (11 months ago)
• Topics: 7segments, arduino, electronics, irremote
• Language: C++
• Homepage:
• Size: 149 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Speakers Timer

![Picture](doc/picture.jpg)

## Use case

![Use case](doc/usecase.jpg)

## Functions

![Controller](doc/controller.png)

* Enter the minutes and seconds by digit buttons.

* Counting down starts by START / PAUSE button.

* The timer is reset by RESET button on pausing or when counting down finished.

  * You can enter number if you press RESET button again.

## Hardware

### Components

* [Arduino Pro Mini 3.3V 8MHz](https://www.switch-science.com/catalog/876/) (or compatible product)

* [4 digits, 7-segment display module](https://www.aitendo.com/product/5361)

* [IR receiver module](https://akizukidenshi.com/catalog/g/gI-04659/)

* [IR remote controller](https://www.aitendo.com/product/19084)

* 220Ω resistor × 7

* A switch

* A battery (3.3V)

* Wires, connectors, etc...

### Circuit

![Use case](doc/circuit.png)

## Software ![MIT Licensed](https://img.shields.io/badge/license-MIT-blue.svg)

### Build and transfer

Clone the source code and open the project file "SpeakersTimer.ino" with Arduino IDE.

This sketch depends on following libraries. (You can add these by library manager)

* [IRremote](https://github.com/Arduino-IRremote/Arduino-IRremote)

Almost certainly, the signal of each button is different according to the controller device.

You have to modify `codeTable` and other releated code in "SpeakersTimer.ino".

```

PROGMEM static const uint32_t codeTable[KEY_MAX] = {

    0x00FF9867, 0x00FFA25D, 0x00FF629D, 0x00FFE21D, 0x00FF22DD, // 0 ~ 4

    0x00FF02FD, 0x00FFC23D, 0x00FFE01F, 0x00FFA857, 0x00FF906F, // 5 ~ 9

    0x00FF6897, 0x00FFB04F,                                     // asterisk, pound

```

```

if (IrReceiver.results.decode_type == NEC && IrReceiver.results.bits == 32) {

```

You can build the source code with following configuration.

* Board: "Arduino Pro or Pro Mini"

* Processor: "ATmega328P (3.3V 8MHz)"

Then, you can transfer binary data to Arduino Pro Mini by any writer.

### License

These codes are licensed under [MIT License](LICENSE).