In learning how to use Node-Red I’ve changed my coding countless times as I’ve found better ways to do things. Please note that in 2017, the way I use global variables here is out of date. It still works but for example context.global.fred=1 is now written as global.set(“fred”,1). Read this…
APDS9960 Gesture Sensing with ESP8266
A thought for a little display project. I recently came across some code for an LCD display (160*240 – detailed in a previous blog) using the ESP12 and an LCD display. But I’m inclined to use the Nextion display (also detailed in a previous blog) because it is touch sensitive.…
Node Red Script
Now that I’m back in the UK, I’ve left a Raspberry Pi2 in Spain monitoring my solar pergola lighting installation as an ESP8266 measures the state of a solar-charged car battery every 15 minutes and reports minimum and maximum voltages daily by email. The unit also controls lighting and while…
Espressif New Board
Well we know that the ESP8266 replacement will have Bluetooth low energy, a different architecture and more RAM – something to look forward to – so now here’s a sneak preview – this is not the latest PCB but it’s better than nothing I’m sure you’ll agree. So we’re looking…
Progress
I thought I’d pen a general line as I’ve been quiet the past few days. Depressing news about France! We’re back in the UK after our summer in the sun – and nothing works – we’ve replaced the fridge, the microwave, you name it. I have managed to get some…
Silence
Couple of days or so of quiet coming up this end. Travelling from the bottom of Spain to the Northeast of Britain. No doubt today was the last day of sun I’ll see this year….
ESP32 Coming Soon
So many of us have been happily using in the inexpensive ESP8266 chips for some time now for IOT applications, home control etc and long may that continue. They do have SOME issues – for example they are short of RAM memory to the point that all except critical subroutines…
ESP8266 3D WIFI Mapping
The ingenuity of people never ceases to amaze me – watch this guy as he uses an ESP8266 to provide a stunning 3D map of WIFI signal strength in his office – amazing. http://hackaday.com/2015/02/17/mapping-wifi-signals-in-3-dimensions/
Node Red Modules
All now published – though I now use a function for thermostatic functions so for me the last one is a bit redundant – but big-timer is my all time favourite I’m using all over the place and I use esplogin to watch out for units logging in – like…
EMW3265 ESP8266 KILLER
Erm, no, though you might think so by this headline.. https://hackaday.com/2015/07/13/new-part-day-the-esp8266-killer Read the comments – the $5 ESP8266 – where? $2 ESP8266 more like it – less, even – http://goo.gl/VB0V9K There’s even a claim that this new single-source board (Seeed Studio) has MORE memory – well at least one variation…
Bash Experts
Any BASH experts in here? I have a very crude startup script made by using WEBMIN on my Raspberry Pi. It starts up BLYNK Now if I type the command line…. java -jar /var/blynk/server-0.10.2.jar -dataFolder /var/blynk & That ampersand on the end will ensure my terminal program prompt comes back…
Blynk Graphing
This is just for one of the guys at Blynk to show the graphing – but for everyone else, the state of my current Blynk app – running on a local Blynk server on a Raspberry Pi. 2 graphs – one shows day, one shows 6 hours. Also shows how…
Cheap ESP8266 NodeMCU
Seems like a good offer from Banggood – from their China warehouse (the EU warehouse is for some reason more expensive) http://www.banggood.com/NodeMcu-Lua-ESP-12E-WIFI-Development-Board-p-985891.html?utm_source=google&utm_medium=cpc&utm_campaign=Celc-ad-KI-Unbeat-ESP12E&utm_content=hazel&utm_design=27&gclid=CJyo17OZ9MgCFc-6GwoddIgJbA And while we’re on – a new board.. http://www.espert.co/
Automatic Router Selection for ESP8266
I wonder if anyone who has done this can help. As most of you know, I program my ESP8266 devices in C. I’ve been having some issues with weak signal recently and it would be really nice to have a list of acceptable access points and their passwords – and…
Drilling into Blynk
Yesterday I referred to using DELAY in Node-Red to slow down one of the Blynk controls. To backtrack a little… We’re talking here about controlling devices such as ESP8266 boards using MQTTT – which I maintain is the best way to have a boatload of devices around the place and…
A Better Day
A better day today. After switching my WIFI to a separate access point, up to now the WIFI is holding – I’m not convinced but for now all seems well. That has allowed me to spend a little more time with Blynk – and after chatting to the Node-Red node…
WIFI Congestion?–Help Requested?
Update: See bottom I have a problem – and I’m going to shamelessly use this blog to see if someone can help. In the midst of my home control nirvana – I’m having some WIFI issues that I simply don’t understand. So – my setup: Broadband coming in is maybe…
Orange Pi, BAIDU and foreigners
Updated: Do they just have it in for me or is this typical? I’ve been trying to get an account with Baidu for some time as some of the Chinese suppliers often put firmware up there. So, armed with Google translate, I went off to get an account, filled in…
The new ESP
In case you missed it – extracts from forum conversation with Swee Ann Teo, CEO of Espressif about the new chip – which I understand will have Bluetooth as well as WIFI and be a lot more powerful. Also in that discussion is a promise to support the existing chip…
Blynk App
I’ve re-written this blog today – as the people at Blynk have been quite useful – promising to fix some items I’ve griped about/commented on. I hope they don’t mind me pinching some of their imagery. One of the problems with home control – is making a nice web interface…