johnty’s gists

johnty / node-ffi-mapper.js

Last active July 15, 2016 20:22

	// instructions:
	// 1.) install node.js and npm
	// 2.) put this file in a folder
	// 3.) go to this folder in terminal, and install ffi and ref using 'npm install ...'
	// 4.) execute by typing `node node-ffi-mapper.js`
	//
	// note: refers explicitly to libmapper-0.2.dylib so make sure it is on the path!

	var ref = require('ref');
	var ffi = require('ffi');

johnty / server.js

Last active August 22, 2016 13:35

sandbox


	// Import Express
	var express = require("express");
	var app = express();
	// Import Cors: cross origin resource
	var cors = require("cors");
	app.use(cors());

	// Import Mongoose
	var mongoose = require("mongoose");

johnty / pigstest_servo

Created November 25, 2016 20:34

pigs servo test code

	MAX=1700
	MID=1500
	MIN=1200

	sudo pigpiod
	pigs pfs 18 50 # set pwm freq to 50 hz on BCM18
	pigs servo 18 $MID # set servo pulsewidth to MID us on BCM18
	sleep 1
	pigs servo 18 $MIN # set servo pulsewidth to MIN on BCM18

johnty / PiPeopleCounter.json

Created December 22, 2016 21:21

pishield node-red people counter + photo taking

[{"id":"acc6e5cd.bbc508","type":"mcp3008","z":"54a3f28b.3cfa8c","name":"IR Sensor (CH7)","device":"/dev/spidev0.0","mode":"0xF0","interval":"50","x":296.5,"y":59,"wires":[["8497b430.1c4d18"]]},{"id":"f746b842.a8ddf8","type":"inject","z":"54a3f28b.3cfa8c","name":"","topic":"","payload":"start","payloadType":"str","repeat":"","crontab":"","once":true,"x":104,"y":40,"wires":[["acc6e5cd.bbc508"]]},{"id":"e4035cf3.8252d","type":"inject","z":"54a3f28b.3cfa8c","name":"","topic":"","payload":"stop","payloadType":"str","repeat":"","crontab":"","once":false,"x":104.5,"y":76,"wires":[["acc6e5cd.bbc508"]]},{"id":"89defb3b.aa7a88","type":"debug","z":"54a3f28b.3cfa8c","name":"","active":true,"console":"false","complete":"payload","x":605.5,"y":167,"wires":[]},{"id":"8497b430.1c4d18","type":"switch","z":"54a3f28b.3cfa8c","name":"","property":"payload","propertyType":"msg","rules":[{"t":"gt","v":"200","vt":"num"},{"t":"lte","v":"199","vt":"num"}],"checkall":"true","outputs":2,"x":146.5,"y":174,"wires":[["9c4d90ba.a4173"],["c

johnty / PiShield.m

Created April 6, 2017 18:00

Wolfram Connected Device Driver for PiShield A2D (MCP3008), using wiringpi GPIO command

	(* until we figure out how to pass strings to ext commands, this bit is hard coded *)
	readsensor[_, x_] :=
	(<<"!gpio -x mcp3004:100:0 aread 100")

	readsensor[_, 0] :=
	(<<"!gpio -x mcp3004:100:0 aread 100")

	readsensor[_, 1] :=
	(<<"!gpio -x mcp3004:100:0 aread 101")

johnty / PiPlant.json

Created April 18, 2017 17:42

PiPlant flow

	[
	{
	"id":"1b6d4b38.cc6c95",
	"type":"tab",
	"label":"PiPlant"
	},
	{
	"id":"7e18a8a7.dea448",
	"type":"rpi-gpio out",
	"z":"1b6d4b38.cc6c95",

johnty / PiPlant_gauge.json

Created April 25, 2017 21:44

PiPlant flow with FRED integration and servo driver for physical gauge

	[
	{
	"id":"7e18a8a7.dea448",
	"type":"rpi-gpio out",
	"z":"1b6d4b38.cc6c95",
	"name":"Relay 1",
	"pin":"13",
	"set":true,
	"level":"0",
	"out":"out",

johnty / node-red-keyboard

Created April 25, 2017 22:20

play a midi keyboard with node-red

	[
	{
	"id":"106236e9.a79359",
	"type":"ui_button",
	"z":"c7976967.e6bb98",
	"name":"",
	"group":"134bfa7c.f58646",
	"order":1,
	"width":0,
	"height":0,

johnty / PySeqControl.json

Created May 18, 2017 17:56

pysequencer control node-red flow. requires node-red-contrib-osc

	[
	{
	"id":"67e93ae6.080164",
	"type":"tab",
	"label":"PySeqControl"
	},
	{
	"id":"ff38aa39.6692d8",
	"type":"osc",
	"z":"67e93ae6.080164",

johnty / MoistureMusicMap.json

Last active May 30, 2017 19:40

maps single moisture value (0-100) to tempo and key variables of a simple algorithmic sequencer

	[
	{
	"id":"98459436.cfd5b8",
	"type":"ui_slider",
	"z":"185b40f6.0c777f",
	"name":"",
	"label":"moisture level",
	"group":"e97b599c.1d6968",
	"order":1,
	"width":"5",

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