https://github.com/friedger/ampel

https://github.com/friedger/ampel

Last synced: 3 months ago
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• Host: GitHub
• URL: https://github.com/friedger/ampel
• Owner: friedger
• License: apache-2.0
• Created: 2015-06-06T12:33:21.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2015-06-07T07:54:07.000Z (about 11 years ago)
• Last Synced: 2025-12-07T10:04:58.575Z (8 months ago)
• Language: Java
• Size: 2.72 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

Awesome Lists containing this project

README

          

Ampel

===================================

This app results from a short hackathon at droidcon Berlin 2015 (6 June 2015).

It informs car drivers (who are checking their mobile phones) when a red traffic light switches to green.

Description

------------

This app is installed on an Android device in a car. During the hackathon we used the Panasonic Mirror.

In addition, the mirror is wirelessly connected to the car engine (a Lego EV3).

The app starts a foreground service that scans for Bluetooth LE devices.

These devices broadcast their state (red or green) using the Uribeacon format (beaconLayout). As we only had one RFduino and

there were many BLE devices around us we also filtered by mac address.

In the real implementation, a specific beacon Layout will be defined, that is used

for filtering.

When the car approaches a beacon the app informs the user about the state of the traffic light by showing

a large green or red icon is shown. For autonomous cars like we used, the app sends control commands to the Lego

brick to start or stop the engine motors.

Background

----------

We used the Arduino IDE to program the RFduino with a RGB/button shield. The state of the light is changed by pressing

one or the other button.

The app is based on the BluetoothLeGatt example that comes with Android Studio and the [HTTYR Android control app](https://lejosnews.wordpress.com/2014/05/02/httyr-android-control-app/)

Unfortunately, the mirror could not manage BLE and Wifi hotspot at the same time gracefully.

Pre-requisites

--------------

- RFDuino with RGB/button shield

- Lego mindstorm EV3

- Android device with Android 4.3

- Android SDK v22

- Android Build Tools v22.0.1

- Android Support Repository

Open Source Licenses

--------------------

We use open source software from

* The Andrdoid Open Source Project, Inc. under APL 2.0

License

-------

Copyright 2015 The Ampel Team

Licensed to the Apache Software Foundation (ASF) under one or more contributor

license agreements.  See the NOTICE file distributed with this work for

additional information regarding copyright ownership.  The ASF licenses this

file to you under the Apache License, Version 2.0 (the "License"); you may not

use this file except in compliance with the License.  You may obtain a copy of

the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the

License for the specific language governing permissions and limitations under

the License.