I can’t remember how, but when messing around with scopes and awaiting my new signal generator (more of that in the coming weeks), the AD9833 Programmable Waveform Generator came to my attention. Take a look at this Ebay link. This would you believe is a signal generator. Without those connectors…
Month: November 2017
Korad KA3005D Bench Supply
Just a quick one here as it’s all in the video below. This is about the Korad KA3005D Bench Power Supply – a nice solid unit able to provide up to 30v at up to 5a. I had visions of some lightweight switched job – but no – a honking great…
INA219/ESP8266 and Node Red
In a previous blog entry we were playing with the INA219 voltage and current monitor. Here I team the little board up with the ESP8266 and Node-Red. In this entry, I have teamed up the INA219 with my ESP8266 code which already has a driver in for this chip and…
The BitScope Mini Oscilloscope
Let’s face it, if you want an oscilloscope and logic analyser that fits in your shirt pocket, your choices are a tad limited. Regular readers may recall that way back in 2016, I did a short review of the BitScope Micro, a VERY portable circuit board which, coupled with suitable…
LiPro Balance Charger
Every time I see a video about charging or testing batteries, I tend to see one of these shiny blue units (or similar) – so I thought it was about time I got one! The LiPro Balance Charger (or rather, a clone as we will see later) is pocket sized…
OWON SDS1102 Oscilloscope
I thought as the weather is so very bad here in the Northeast of England right now, I’d spend some time reviewing equipment – so I’ve a load of stuff coming in the next few weeks – first off is the Owon SDS1102 oscilloscope.
INA3221 v INA219
Voltage and current monitoring The INA3221 or rather one of the boards based around it, allows for a single power input and up to 3 power outputs –each monitoring voltage and current and all done via I2c. You can (almost) think of this as a triple INA219 – the bidirectional…
A busy Week
It has been a busy week this week – with lots of new things happening. Firstly, there is a brand new update to the RFLINK software, IMHO the best software around for decoding and transmitting signals for a wide range of RF devices – such as weather stations and remote…
DPS5020 and DPS3003 PSUs
Firstly, the DPS5020 power supply comes in 2 parts, the main controller and a front panel. You get the pleasure of fitting it in a box – and supplying power. So it is “kind of” DIY. In this case you get a programmable power supply able to give you up…
EM125 Handheld Scope
It was just like Christmas this morning. After a few days of no posty, a couple of packages turned up for me. Inside one of them, the EM125 Handheld Digital Oscilloscope. This large-pocket-size scope runs for up to 10 hours on an internal rechargeable batteries, has 25Mhz bandwidth and also…
Sales
For some reason this morning when I got up – there were more emails than usual – and amongst them – sales – so here’s just a quick set of links – in case you’re after some Christmas presents for yourself = I’m not saying they are good or…
Node-Red and Alexa with Big Timer
I’ve recently updated my setup at home, finally doing away with HA-Bridge and I thought you might like to see this simple setup. So for beginners, HA-Bridge is a piece of software (a very nice piece of software) that runs on for example a Raspberry Pi, who’s job (in my…
Sunday Alexa Post
WELL! You learn something new every day. Just had a call from a pal of mine (we both have multiple Amazon Alexa units around the house). Not only can you now call the thing “computer” – but one can now call the other… so “Alexa, call house” rings the house…
RPI Prototyping
Remember a few blogs back where we were talking about prototyping boards for Raspberry Pi and similar and I showed a sample board and someone came back and said “Ah but you can get cheaper on AliExpress” – well, I bought one… Here’s the link – £1.09 in sterling, free…
Graphing System Info in Node Red and Grafana
We were just talking about getting system info into graphs in the comments in a previous blog entry – and I realised I already had some code for getting that info in Python – and using a library that can provide a LOT more. So – as it was there…
A Weekend of Links
Good morning (11/11)! Well, this weekend I got up early to see what was happening with the 11/11 sales. What’s that you say? Well, if we only knew about British sites like RS components one could be forgiven for thinking that today was just another ordinary day. Fortunately we know…
Waterproof Box
A quiet post day today, some exciting gadgets I’m expecting remain in the postal system… but this little box turned up unexpectedly from Itead… it’s a waterproof box no doubt intended for their Sonoff products – and it would do a good job as their smaller units will fit into…
Enter Monitorix
I recently did a post asking for input about useful tools for the Raspberry Pi and other SBC boards and the first to some out of this is Monitorix. This is just a short blog – I’ve not had enough time to ensure I understand the usefulness of this –…
Your Favourite Pi Things
On the blog here we refer often to “the script” which sets up a whole raft of useful tools on SBCs such as the Raspberry Pi – and we’re always on the look out for new and improved tools. But let’s here from YOU! So we already know from extensive…
Another ESP32
It seems that ESP32 boards are now coming down in price and increasing in number. In today’s mailbag, this little number entitled WeMos® TTgo ESP32 WiFi + Bluetooth Board 4MB Flash UNO D1 R32. This isn’t the cheapest ESP32 out there (though it is not expensive either) – some of…