Archive for the Javascript Category

Ta da!

Posted in Javascript, node-red, OpenSprinklette on August 12, 2017 by asteriondaedalus

Ah ha!

I had some trouble importing my pegjs parser function into the node console until I worked out node and/or javascript treats directories as “/” whereas windows uses “\”.

So finally the import is simply:

var parser=require('./parser.js');

I also hand modified the parse function signature which is now:

function peg$parse(input,zones, options) {};

I worked out that zones needed to go ahead of options as calling “parse(input,,zones)” wasn’t a popular choice with the javascript.

The input variable “zones” will come from the configuration node.  That way the parser will take the configuration object [{sector1:chipid()}] and return the mqtt topic fragment “chipid()/zone[0..4]”.

So, the modified parser tested using node console shows it working:

final zone parser test

Now all is needed is the use the zone “grammered” string in the google event title and snip it out, when the event starts/stops.  This is achieved with msg.payload.title as the first parameter in the call made by the node reacting to the calendar event.

The array returned can either be iterated over using a for-loop OR be returned by a node-red function to be treated as a stream of messages (aka msg).

I have a sneaking suspicion that, in fact (and having read the code and how it uses “options”), I [could|should] have injected the zones via options.

Something to play with I think, as it doesn’t seem clean to hand mod the parser code.


Posted in Javascript, node-red, OpenSprinklette on August 10, 2017 by asteriondaedalus


A parcel turned up with RaspingbreathburryDoodlePi heatsink kits.

They are the recommended source for a heatsink for the OPiZ.

Although I can certainly find the same on Aliexpress, I bought locally to get them within a week instead of 10 weeks.

Still, gotta say brrrrrrrrrrrrrr, freezy!

At least 5degreeC cooler running with heat sink.

Still not convinced that was source of ethernet dropouts on my new board.   No problems for a couple of weeks now so I will put concerns aside.

I did notice 15mmx15mmx5mm 5V fans on Aliexpress though.  Tempting.

Still tempted at getting a small peltier cooling gadget to go the whole hog – mostly for the fun of it.

But, at the moment, I am focusing on finishing the opensprinklette configurator node for in node-red.   I have a basic configurator to map sectors to WeMOS chipid(), now I will integrate the pegjs defined parser.