https://github.com/geerlingguy/pi-bell-slapper
The King of Ding. Internet-connected Raspberry Pi-based notification bell.
https://github.com/geerlingguy/pi-bell-slapper
bell ding email notifications python raspberry-pi servo slap solenoid
Last synced: 3 months ago
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The King of Ding. Internet-connected Raspberry Pi-based notification bell.
- Host: GitHub
- URL: https://github.com/geerlingguy/pi-bell-slapper
- Owner: geerlingguy
- License: mit
- Created: 2020-10-07T22:06:59.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2023-03-31T15:04:13.000Z (about 2 years ago)
- Last Synced: 2025-02-27T05:51:24.618Z (4 months ago)
- Topics: bell, ding, email, notifications, python, raspberry-pi, servo, slap, solenoid
- Language: OpenSCAD
- Homepage:
- Size: 2.65 MB
- Stars: 81
- Watchers: 5
- Forks: 3
- Open Issues: 4
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Metadata Files:
- Readme: README-Mark-I.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
## Mark I - "Ye Olde Bell Slapper"
The original 2020 version of the notification bell was slapped using one of a pair of [MG90S Micro Servos](https://amzn.to/2I6sZSC) I bought from Amazon. The Pi tells the servo to go, the servo hits the bell with a little armature, and there you have it.
Well now, here's where it gets interesting. I thought I'd share all the code and tell you how it's done. That's why you're reading this, isn't it?
1. Clone this repository to your Pi: `git clone -b 1.3.0 https://github.com/geerlingguy/pi-bell-slapper.git`
1. Run `python3 -m pip install RPi.GPIO` to install required dependencies.
1. Plug in the following wires on the servo motor (see illustration below):
1. Red wire to 5V power (pin 4)
1. Brown wire to ground (pin 6)
1. Orange wire to GPIO 21 (pin 40)
1. Change into this directory (`cd pi-bell-slapper`) and run the command `./bell_slap.py`.
1. Wait a second, and you'll see the motor spin, then reverse back to its original position.
Here's an illustration of the servo connections:
> Note: The servo's wires come preinstalled into a 3-pin dupont female connector. You can use a tiny thing to pry up the release on the orange pin barrel connector, and slide that out. Then slide it into a separate 1-pin dupont female connector, and voila! You can then plug that orange wire directly into pin 40.
### But how do I mount this contraption to _actually_ slap a bell?
Well... it's a little more complicated because to slap a real bell, you have to mount the servo motor to something solid, build a little armature to slap the bell, mount the bell so it doesn't move when slapped.
You can see my franken-build up at the top of this README. It ain't pretty, but she's got it where it counts.