johnty wang johnty
johnty
/ latency_measure_multi.ino
Last active
December 2, 2019 19:42
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| /** | |
| Latency measurement code -- measurement jig | |
| Simple tool to toggle a digital pin and measure the delay until | |
| the desired response happens. The function of the digital output, | |
| and the signal to be measured, are determined by whatever external | |
| hardware is attached. | |
| The resulting delay in microseconds is printed over the serial port | |
| so multiple trials can be made into a histogram. The granularity of |
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| Webmapper console (debug enabled): | |
| -- <network> got /unmapped testdev.1/testOut <- testOutDev.1/testIn @id | |
| -- <network> got /signal testdev.1:testOut | |
| -- <database> updated 1 properties for signal 'testdev.1:testOut'. | |
| -- <network> got /unmapped testOutDev.1/testIn -> testdev.1/testOut @id | |
| -- <network> got /unmapped testdev.1/testOut <- testOutDev.1/testIn @id | |
| -- <network> got /device testOutDev.1 + 20 arguments | |
| -- <database> updated 1 properties for device 'testOutDev.1'. | |
| -- <network> got /signal testOutDev.1:testIn |
johnty
/ weather-chart-flow.js
Created
May 17, 2019 02:05
node-red openweathermap and chartjs dashboard example
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| [ | |
| { | |
| "id": "f1283496.99fa28", | |
| "type": "tab", | |
| "label": "Flow 1", | |
| "disabled": false, | |
| "info": "" | |
| }, | |
| { | |
| "id": "87ffda01.2a7e98", |
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| #include <cstring> | |
| #include <iostream> | |
| #include <cstdio> | |
| #include <cstdlib> | |
| #include <array> | |
| #include "config.h" | |
| #include <mapper/mapper_cpp.h> |
johnty
/ input_entropy.py
Last active
January 24, 2019 21:13
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| #!/usr/bin/env python | |
| from __future__ import print_function | |
| from collections import deque | |
| import sys, mapper | |
| import numpy as np | |
| start = mapper.timetag() | |
| d1 = deque() |
johnty
/ mikrotik_wifi_export
Created
January 2, 2019 04:34
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| # dec/06/2018 14:01:09 by RouterOS 6.43.7 | |
| # software id = YFCZ-M364 | |
| # | |
| # model = RouterBOARD 941-2nD | |
| # serial number = 6617056BECC9 | |
| /interface wireless security-profiles | |
| set [ find default=yes ] supplicant-identity=MikroTik | |
| add authentication-types=wpa-psk,wpa2-psk management-protection=allowed mode=dynamic-keys name=wifi_wpa supplicant-identity=MikroTik wpa-pre-shared-key=xxxx \ | |
| wpa2-pre-shared-key=xxxx | |
| /interface wireless |
johnty
/ esp32-wifi-multicast-server.ino
Created
December 12, 2018 05:52
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| #include <WiFi.h> | |
| #include <WiFiUdp.h> | |
| WiFiUDP udp; | |
| const char * ssid = "SSID"; | |
| const char * password = "PASS"; | |
| boolean connected = false; | |
| void setup() | |
| { |
johnty
/ node-red-midi-doorbell.json
Created
May 26, 2018 02:29
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| [ | |
| { | |
| "id":"ce73efbb.99435", | |
| "type":"http in", | |
| "z":"c31ab6fb.21e498", | |
| "name":"", | |
| "url":"/motion", | |
| "method":"get", | |
| "swaggerDoc":"", | |
| "x":217, |
johnty
/ arduino-ble-sysex-test.ino
Created
January 16, 2018 22:53
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| /* | |
| BLE_MIDI Example by neilbags | |
| https://github.com/neilbags/arduino-esp32-BLE-MIDI | |
| Based on BLE_notify example by Evandro Copercini. | |
| Creates a BLE MIDI service and characteristic. | |
| Once a client subscibes, send a MIDI message every 2 seconds | |
| */ |
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| [ | |
| { | |
| "id": "c67af34f.cfd1", | |
| "type": "function", | |
| "z": "9b7d2645.a72f18", | |
| "name": "deltaT", | |
| "func": "\nvar prev = flow.get('prev')||0;\n\nvar d = new Date();\nvar n = d.getMilliseconds();\n\nif (msg.topic == \"timestamp\"){\n flow.set('prev', n);\n}\n \nelse {\n if (n<prev) {\n //console.log(\"OVERFLOW!\");\n n=n+1000;\n }\n //console.log(\"tDiff = \",n,\"-\",prev,\"=\",n-prev);\n console.log(n-prev);\n}\n\nreturn msg;", | |
| "outputs": 1, | |
| "noerr": 0, | |
| "x": 382.5, |