https://github.com/alauddinthewonder/arduino-attiny85-switch-3pin-bluetooth
Simple low powered automation to switch 3 AC sockets and controlled with Bluetooth. #ATtiny85
https://github.com/alauddinthewonder/arduino-attiny85-switch-3pin-bluetooth
alauddin arduino attiny85 bluetooth eeprom low-powered watchdog
Last synced: 8 months ago
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Simple low powered automation to switch 3 AC sockets and controlled with Bluetooth. #ATtiny85
- Host: GitHub
- URL: https://github.com/alauddinthewonder/arduino-attiny85-switch-3pin-bluetooth
- Owner: AlauddinTheWonder
- License: mit
- Created: 2020-03-31T11:24:42.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2020-04-20T03:26:29.000Z (over 5 years ago)
- Last Synced: 2024-12-26T00:27:08.562Z (9 months ago)
- Topics: alauddin, arduino, attiny85, bluetooth, eeprom, low-powered, watchdog
- Language: C++
- Size: 23.4 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
Arduino ATtiny85 Switch
=======================
> 3 pin with bluetooth control
Simple low powered automation to switch 3 AC sockets and controlled by Bluetooth. #ATtiny85
## Devices required
1. ATtiny85
2. DS1307 or DS3231 RTC module
3. HC-05 or HC-06 Bluetooth module
4. 3.3v to 5v power supply
## ATtiny85 pins:
Pin | Name | Wire connection
----- | ------------ | ---------------
1 | Reset | Not connected
2 | I/O Pin 3 | Switch 2, BT: Tx
3 | I/O Pin 4 | Switch 3, BT: Rx
4 | GND | Connected to Ground
5 | I/O Pin 0 | RTC SDA
6 | I/O Pin 1 | Switch 1, Mode change pin
7 | I/O Pin 2 | RTC SCL
8 | VCC | Connected to +3.3v to +5v
> **Note**: Mode pin should be connected to `GND` via `10K` resistor. To enable
> Bluetooth mode, connect the Mode pin to `VCC` and need to restart the device.
## Default time schedule:
Switch | On | Off
-------- | -------- | -----
Switch 1 | 06:00 | 23:00
Switch 2 | 09:00 | 19:00
Switch 3 | 08:00 | 00:00
> **Note**: Can be re-scheduled by changing values in `t85-switch-3pin-with-BT.ino` file or via Bluetooth Application.
## Bluetooth Mode
To access device from bluetooth, start device in BT mode by connecting MODE pin with VCC.
For commands, have to send two bytes with 50ms gap.
```
-> First byte will be COMMAND
-> Second byte will be PARAMS (Values)
```
Command details:
Sr No | Command | Param | Return | Description
------ | -------- | -----------| ----------- | -----------
1 | 255 | 0 | SAME_PARAM | Pingback. To recognize this device
2 | 254 | 0 | TIMESTAMP | Get RTC time in timestamp (UTC)
3 | 253 | TIMESTAMP | SAME_PARAM | Set RTC time, value in timestampt (UTC). Return the same as Param if success
4 | 252 | 0 | 1-30 | Get number of switch device support. Ex. 3
5 | 251 | ROM_ADDR | 0-255 | Read value from EEPROM. To read switch value. ROM_ADDR will be between 0 and (PIN_COUNT * 2)
6 | 251 | 250 | 0-59 | Get time drift in second(s)
7 | 250 | 0-59 | SAME_PARAM | Set time drift in second(s)
8 | 0-60 | 0-23 | SAME_PARAM | Write value to EEPROM. Set hours to switches.
> To update Switch on-off hour:
Switch | Command | Param
--------- | ------- | ------
Swt 1 On | 0 | 0-23
Swt 1 Off | 1 | 0-23
Swt 2 On | 2 | 0-23
Swt 2 Off | 3 | 0-23
Swt 3 On | 4 | 0-23
Swt 3 Off | 5 | 0-23
so on... | |
---
Best Regards,
Alauddin Ansari
([GitHub Page](https://github.com/AlauddinTheWonder "Alauddin Ansari"))