Search found 322 matches

by loboris
Tue Dec 15, 2020 4:34 pm
Forum: Other Boards
Topic: [STM32F405RG] or [STM32F7XX] based Board with Ethernet and RS485
Replies: 5
Views: 473

Re: [STM32F405RG] or [STM32F7XX] based Board with Ethernet and RS485

Interesting that these are based on ESP32. I would question whether this is sufficiently resilient for industrial applications. In my experience (backed up by @kevinkk525) it suffers from occasional spontaneous reboots, even taking extreme precautions with the power source. By contrast STM-based Py...
by loboris
Wed Jun 03, 2020 8:11 am
Forum: Other Boards
Topic: New STM32H743VIT6 dev boards
Replies: 35
Views: 8333

Re: New STM32H743VIT6 dev boards

I have found this board delivered for $26AUD https://www.aliexpress.com/item/4001048553596.html?spm=a2g0s.9042311.0.0.3da24c4d5Oqsga at that price I just have to get 1. Considering the amount of flash and RAM on this board and the fact it has both a header for a small SPI TFT and a FPC connector fo...
by loboris
Mon Mar 09, 2020 9:11 am
Forum: Drivers for External Components
Topic: FTDI EVE touch display driver?
Replies: 3
Views: 2800

Re: FTDI EVE touch display driver?

There is a fully working eve module in my ESP32 MicroPython port, unfortunately I've never had a time to fully document it, but it supports all eve features and works very well (I'm using it for years...). It depends on some other modules, but it could be a start point if you want to port it to your...
by loboris
Mon Mar 04, 2019 7:26 am
Forum: Drivers for External Components
Topic: TI ADS1219 ADC driver
Replies: 8
Views: 2787

Re: TI ADS1219 ADC driver

A noob question here. If it is a 24bit ADC and your Vref is 3.3v then the sensitivity it has to read is 3.3v/(2**24) = 0.00000019669532775878905 volts What sort of hardware would be needed to decouple and isolate the ADC so that such fine voltages are not just inducted from the air?? I have used th...
by loboris
Sun Feb 10, 2019 10:00 am
Forum: General Discussion and Questions
Topic: Free RAM on MicroPython boards
Replies: 37
Views: 40230

Re: Free RAM on MicroPython boards

As for the 8MB RAM it's not clear to me how this is going to be utilised for MicroPython. Upper 4MB cannot be used for MicroPython heap. It can be used for storing data or for RAM file system , I'm working on a driver for it. It will enable very fast writing speeds (practicaly the same as read spee...
by loboris
Wed Jan 30, 2019 8:41 am
Forum: General Discussion and Questions
Topic: Help writing SPI library (FT813 lcd driver)
Replies: 9
Views: 2963

Re: Help writing SPI library (FT813 lcd driver)

@vitormhenrique

You can check this EVE library used on my ESP32 MicroPython port, It is fully working and it should be no problem to convert it for PyBoard (change the low level SPI functions).
The MicroPython module is here.
by loboris
Sat Jan 26, 2019 9:01 pm
Forum: Other Boards
Topic: New implementation of MicroPython for K210
Replies: 5
Views: 2152

Re: New implementation of MicroPython for K210

@Roberthh

I've fixed the issues with ampy and rshell.
ampy works fine, directory listing with rshell is little slow. other things works, I'll check it more before committing the changes...

BTW, this Forum could be a better place to discuss issues related to this MicroPython port.