I just received this US/EU Plug 12/24 hour 12 Inch LED Ring Wall Clock from Banggood (pre-assembled), complete with a US plug – but as that’s a separate USB charger it’s not that important – they do supply both EU and USA USB adaptors.
You may be aware that I’ve put together several 60-LED modules with ESP-12 boards in the past, to make LED clocks – firstly with my own ESP-GO firmware and then with Tasmota.
This is NOT one of those – but then, it didn’t require assembly or the need for a non-standard case – swings and roundabouts. I’d have preferred full colour LEDS around the outside of the clock instead of white but that might have raised the price and some may not like psychedelic colours in a clock. I can definitely see a place for this gadget on my office wall once I figure out a way to hide the thin USB lead.
And there it is sitting on my table – working straight out of the box. It seems the unit will auto-adjust brightness depending on ambient lighting level. An important point before I forget – if you disconnect the USB power from this – it KEEPS all the settings as there is an inbuilt Lithium battery for that purpose.
The clock is all of 12″ (35cm) diameter and around 1″ (25mm) thick. It comes complete with metal mounting bracket and was well packed. Ignore the black shape bulging up above the hours section (and the basket behind) in the photo above.
All in, not bad for a cheap ready-made clock – and something a little different for anyone who fancies such a clock but is short of time, skill or both to make their own decent housing (like me for example).
Meanwhile – for the DIY people
I’ll now show you a mess that is currently on my desktop awaiting some inspiration. Take Tasmota firmware on, say, a nodeMCU board (referred to on the Banggood site as Geekcreit® Wireless IOT Development Modules), add in a bunch of parts including an inexpensive ultrasonic sensor, LED, relay board, DHT22 and 60-LED (ws2812b) ring, use the SENSORS version of Tasmota and you get the mess you see below..
Honestly I will turn this into a project, not necessarily using all the bits in ths photo. I was simply interested to see just how much I could run at once using Tasmota – and sure enough, everything works including the Tasmota clock “scheme” 5. You can see in GREEN the HOURS display, in RED the MINUTES display and in magenta the once-a-second-updating SECONDS display. This is just like the clock I added to ESPGO.
And all of that is happening while the SR04 ultrasonic sensor is being checked automatically for distance and the DHT22 for temperature and humidity, the analog input is being regularly sampled and a relay and LED are available for use, all without any additional software. I’m sure I could squeeze more activity in there, but that’ll do for now.