Ash Eldritch SoulAuctioneer
SoulAuctioneer
/ Bluetooth.java
Created
May 1, 2015 16:55
Bluetooth Low Energy (BLE) helper class for Android, including a queue for characteristic writes. See http://stackoverflow.com/questions/18011816/has-native-android-ble-gatt-implementation-synchronous-nature
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| package com.nojack; | |
| import android.app.Activity; | |
| import android.bluetooth.BluetoothAdapter; | |
| import android.bluetooth.BluetoothDevice; | |
| import android.bluetooth.BluetoothGatt; | |
| import android.bluetooth.BluetoothGattCallback; | |
| import android.bluetooth.BluetoothGattCharacteristic; | |
| import android.bluetooth.BluetoothGattDescriptor; | |
| import android.bluetooth.BluetoothGattService; |
SoulAuctioneer
/ gist:29bc2bcec3d9fb046f90
Created
October 4, 2014 06:00
Android class to reliably detect that a Bluetooth Low Energy device has been moving further away and crossed a specific threshold, by testing for a consistently declining moving average of RSSI. Needed because Bluetooth sequential RSSI readings can be highly variable. No actual Bluetooth code here so can easily be repurposed.
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| package com.android; | |
| /** | |
| * Created by Ash Eldritch. | |
| * | |
| * Bluetooth RSSI is very volatile, and so in its raw form not a reliable method to detect change in proximity. | |
| * Here, I use a moving average over a number of RSSI samples, plus a test for consistently declining RSSI over | |
| * those samples. This much more accurately determines that the Bluetooth device is moving away. | |
| * | |
| * To use: |
SoulAuctioneer
/ extract_ppt_notes.py
Last active
December 16, 2015 04:29
Extract slide notes from PowerPoint
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| import zipfile | |
| import cStringIO | |
| from xml.dom import minidom | |
| class ExtractPptNotes(object): | |
| _chunks = None | |
| def __init__(self, file_data): |