Well, I started to make a video of this thinking it was going to be a great new uninterruptable supply. I’d listened to others, I’d read the spec (or so I thought) and this was to be the new saviour of battery supplies.
The TOMO unit comes in different sizes, I chose the 3-battery solution. I bought mine from AliExpress. It has a USB input and 2 USB outputs and can power up to 2.1 amps in TOTAL (2.1 amps out of one output OR 1 amp out of the other – must use the same chip as everyone else).
It is nice looking and comes MINUS the batteries and hence is cheap. You can use one battery or more – either way it still acts as a power supply.
Continue reading The TOMO Power Supply
There was a time in the distant past (in my case this morning) when running I2c natively in Node-Red on anything other than a genuine Raspberry Pi was a nightmare. Not any more.
So in a recent blog I’ve covered a pair of Node-Red nodes which allow GPIO access in Node-Red on a variety of boards using the underlying ONOFF library (which loads automatically when you get the nodes). And that’s all sorted now – GPIO for all – lovely. But what of the exceedingly useful I2c?
Continue reading I2C For Everyone
You might recall some time ago I wrote about using Python on the Orange Pi Zero etc to run the little SSD1306-based displays.
Despite that being successful I did have a nagging doubt about the LUMA library because later on – when doing some apt-get upgrades I got a segmentation error which I’d originally attributed to using a hard disk with the device. I now think it might be something to do with that library. Well, when my NEO PLUS2 arrived I thought I’d try again..
WELL!!! This version works and also works with the NanoPi AIR AND the NEO2 using the standard Ubuntu image (and has solved my problem with the hard drive on the NEO2)...
Continue reading SSD1306 on the NEO Plus2
The 4-channel Sonoff 4CH Pro is a new product from ITEAD, available from them directly or from Amazon in the UK– though you might reasonably question why the UK Amazon price is higher in pounds than the original is in dollars.
Essentially the unit is a development of their earlier Sonoff 4CH and I’ll do some basic comparison here.
Continue reading The Sonoff 4CH Pro