I’m going to describe here the transmitting side of the EasyTransfer system as used in Arduino – the reason I did this was because I wanted to ship a bunch of binary data from the ESP8266 to the Arduino where I have a nice little wall mounted LCD display –…
ESP8266 Mesh
Here it is – the ESP8266 Mesh English doc – who will be first to get this going? http://bbs.espressif.com/viewtopic.php?f=51&t=929 The Chinese docs have been out for some time as has the mesh SDK but the English docs just came out today – have fun.
Home Control Scheduler
This is a follow-on article from my blog Home Control 2019 which concerns itself with IOT around the home – you might want to read that first. Scheduler is now defunct, replaced by node-red-contrib-bigtimer. Many articles on DIY home control tend to scratch the surface and you don’t find out…
The MIT Boston Trip with Espressif Systems
Some time ago, the CEO of Espressif, makers of the lowest cost WIFI-enabled processor on the planet (a chip I’ve blogged about frequently in here) invited me to come with them to MIT at Boston to the FAB11 conference. As it turns out this was a rather small affair featuring…
ESP8266 Arduino NetIO Server Demo
This week as regular readers know I was far away from our little home in Spain – in fact I was at MIT (Massachusetts Institute of Technology) in Boston, helping promote ESP8266 technology (why? because I could). Along the way I met up with Ivan Grokhotkov who as some of…
Node.IT
Many of you have asked me about the devices I called ESP-210. I’d planned to take a boatload of early production boards with me to Boston this coming week – donated by Pontus Oldberg – but the couriers let us down (there’s a surprise). So – I don’t know how…
FAB11 – Boston
This coming Monday/Tuesday/Wednesday I’ll be working with Espressif CEO Swee-Ann Teo, Jeroen Domburg, Ivan Grokkhotkov and others at FAB11 in Boston – demonstrating how to use the ESP8266 chips in home control and other applications. Heading off from Alicante (Spain) first thing in the morning tomorrow (Sunday) and arriving late…
UPS in Spain
UPS are SO never getting my business again Update 14/10/2015 Absolutely predictably, after promising delivery today – UPS have once again marked the tracking system as “incorrect address” and given up. I keep sending them simple Google map links and they keep writing back to say they cannot read…
ESP LIFESPAN
Just a quick note – as a few of you have said you’ve had issues flashing ESP boards and some have worked then not worked etc… ensure you use the relevant pull ups and pull downs and the right voltages. As you know I do a LOT of work with…
ESP8266 Reliability and ID
Questions for you C programming ESP8266 guys re: the ESP SDK (1.2.0) and some possibly important info on WIFI and MQTT reliability. In the SDK: wifi_station_set_hostname wifi_station_get_hostname HOST ID…. If you do an IP scan on a windows network – ESP units will coming up as IP addresses – and…
Hackitt and Bodgitt discover Healthy Lighting
There has been a lot of talk in the press recently about the colour of lighting and it’s relevance to health. As far back as 2012, the BBC reported that NASA were to test “space-sleep colour-changing lights” on the international space station and since then there have been a number…
Espressif SDK 1.2.0
Just today a new release of the SDK from Espressif along with a patch. I note they have brought back the watchdog controls. Tried it on our code and up to now it’s absolutely fine. Still no sign of the PWM_STOP() function I’m waiting for however. There is a one-liner…
Fab-Fest Boston August
At the start of August I will be a guest of Espressif at the 11th Fab Lab Conference and Symposium in Boston. Espressif have asked me to do a 30 minute session talking about what we’ve been doing with the ESP8266 (which, as regular readers will know is quite a…
The Plan
So here’s the plan… in my home control article I pretty much tell you what we’ve done with our ESP-12 boards – we’re expecting one with no mistakes arriving this week – artwork is in the blog – I’ll confirm once we’ve tested it that there are no sillies. The…
Accessing ESP8266 Arrays in FLASH
A new challenge – the answer to which I will post in here. Accessing an ESP8266 C array in FLASH – i.e. never touching RAM until you actually access something. One suggestion was to ensure you use 4-byte variables.. so I tried this – it compiled – the array is…
Pebble Time
Just a slight diversion to tell you about my new Pebble Time watch. Pebble as you may be aware brought out a Kickstarter project some time ago which did well, a watch based on the same technology used in the Kindles – a black and white display that uses no…
New Provider
Regular readers will know that we’ve been having some capacity issues here at tech.scargill.net with our old provider “Unlimited Hosting” who turned out to be FAR from unlimited – and if you’re reading this – we’re now up and running with a new provider – Smart Hosting – not without…
Lua Revisited
Back in the dark ages when the ESP8266 was something new, I had a go at the nodeMCU software, essentially implementing the Lua language (or a subset of it) on the ESP8266. At the time I was not familiar with Lua but thanks to some of the excellent resources out…
ESP-13
Well, it’s looking like a good day for discovering more ESP-based boards. This time the ESP-13. APPARENTLY what sets this one apart is 16MBytes of FLASH… My question is – when will RAM be the bottleneck (personally I think it already is) – can’t add that as it is internal.…
ESP-210
Getting something new in the post is always fun (unless it’s a tax bill) and today was no exception. A little parcel arrived from Sweden this morning – an ESP-210. After carefully removing from the box… I plugged it in to my PC via it’s micro-USB connector. The right noises…
