Search found 794 matches

by Daniel Wee
Sun 22 Nov 22 2020 10:35 pm
Forum: Other Stuff
Topic: Prepping Windows 10-64-bit for Tensorflow-GPU
Replies: 1
Views: 9757

Re: Prepping Windows 10-64-bit for Tensorflow-GPU

Currently CUDA 10.1 and cuDNN 7 is supported. Don't use CUDA 10.2 or cuDNN 8.
by Daniel Wee
Tue 27 Oct 27 2020 1:37 am
Forum: Other Stuff
Topic: Ubuntu 20.04 Installation bugs
Replies: 10
Views: 3604

Re: Ubuntu 20.04 Installation bugs

If the Software & Updates refuses to open, it might be a problem with running:-

Code: Select all

sudo software-properties-gtk
This might be fixed by re-installing two packages:-

Code: Select all

sudo apt install --reinstall python3-six python3-certifi
by Daniel Wee
Mon 21 Sep 21 2020 5:21 pm
Forum: Projects
Topic: Power monitor
Replies: 6
Views: 12427

Re: Power monitor

This project is close to what we want.
https://primalcortex.wordpress.com/page/2/

It seems that the V3.0 board that I have uses the modbus protocol and not just the usual serial protocol.

https://www.arduino.cc/reference/en/lib ... s-esp8266/
by Daniel Wee
Mon 21 Sep 21 2020 5:17 pm
Forum: Projects
Topic: Power monitor
Replies: 6
Views: 12427

Re: Power monitor

Programming commands can be found in attached PDF
by Daniel Wee
Mon 21 Sep 21 2020 5:07 pm
Forum: Projects
Topic: Power monitor
Replies: 6
Views: 12427

Re: Power monitor

The main IC in the PZEM-004T is a "V9881D" energy measurement IC by Vango Tech. The CT inputs go to the IBN (pin 4) and IBP (pin 5) which is actually shorted together, and possibly referencing Vss as the other leg. These are the Input-B positive and negative channels - so why are they shorted togeth...
by Daniel Wee
Mon 21 Sep 21 2020 4:14 pm
Forum: Projects
Topic: Power monitor
Replies: 6
Views: 12427

Re: Power monitor

The SCT013-000 split core current transformer handles 0-100A with a maximum output of 50mA whereas the PZCT-02 has a maximum output of 100mA. Basically, for the SCT013-000 - 100A=50mA while for the PZCT-02 - 100A=100mA. This means we will probably need to recalibrate, or use a more suitable CT. The ...
by Daniel Wee
Mon 21 Sep 21 2020 4:02 pm
Forum: Projects
Topic: Power monitor
Replies: 6
Views: 12427

PZCT-02 Current transformer

Descriptions: This is a mini split base current transformer; it's the smallest one compared to the similar products (output 100MA). Fully enclosed, good mechanical properties and environmental resistance, strong voltage isolation capability, safety and reliability. Used for energy meter in special; ...