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STD Buzzer-to-i2c
License: MIT
Mode: Editors' pick
- 1
Update time：
2020-09-27 11:55:01
Creation time：
2018-12-10 17:22:21
Description
This projects is a device controlled thru i2C, it has a set of instructions to control two leds, two buzzers and a combination of them.
The device uses an ATTiny85 and it connects to an RaspberryPi to send the commands.
The instruction for the device are:
- 0x00 --> Does nothing
- 0x01 --> All Buzzers ON, All LEDs OFF
- 0x10 --> Al Buzzers OFF, All LEDs ON
- 0x11 --> All Buzzers ON, All LEDs ON
For a better communication between the device and the RPi set the i2c baudrate to 100000 in /boot/config.txt file on the RaspberryPi:
**
dtparam=i2c1_baudrate=100000**
The i2c device code is available here:
[https://gist.github.com/sergiomtzlosa/b0c639606dfe3e17d6ca6ac323177b02](https://gist.github.com/sergiomtzlosa/b0c639606dfe3e17d6ca6ac323177b02)
Follow the instruction on the file to install additional libraries.
The RaspberryPi code the send the commands to the i2c device is available here:
[https://gist.github.com/sergiomtzlosa/ac0bdb416f55b6de1230a298e218e4df](https://gist.github.com/sergiomtzlosa/ac0bdb416f55b6de1230a298e218e4df)
The device was sent to production and it is working.
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity | Mounted | |
|---|---|---|---|---|---|---|
| 1 | Attiny85 | IC2 | DIP8 | 1 | Yes | |
| 2 | 5mm LED | U1,U2 | 5MM LED | 2 | Yes | |
| 3 | 4.7 | R4,R5,R7 | DIP-RES-9.0MMX3.2MM | 3 | Yes | C122091 |
| 4 | Button | S1 | MOMENTARY PUSH BUTTON (PCB) | 1 | Yes | |
| 5 | 10KΩ(1002) | R8 | AXIAL-0.5 | 1 | Yes | C119433 |
| 6 | BUZZERHMB1275-12B | BUZZER1,BUZZER2 | DIP-BUZZER-12X7.5 | 2 | Yes | C96094 |
| 7 | 2Pin Dupont | U3,U4,U5 | 2PIN DUPONT | 3 | Yes |
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