Search found 13 matches

by vahithosan
Tue Jun 23, 2020 6:32 am
Forum: Other Boards
Topic: MCUDev Black STM32F407VET6 + STM32F407ZET6 dev boards
Replies: 162
Views: 70114

Re: MCUDev Black STM32F407VET6 + STM32F407ZET6 dev boards

hello, i have put BLACK_F407VE-20170620-v1.9.1-29-g1686346.dfu on my card with dfusedemo with bt0-3.3v it's ok after bt0-gnd , i plug usb and unknown device d2 d3 toogle and after nothing i have not st-link , it's possible with usb ? how to switch to repl mode by usb ? for RPEL mode use usb J4 or r...
by vahithosan
Mon Feb 03, 2020 12:12 pm
Forum: Drivers for External Components
Topic: LCD display [Advise needed]
Replies: 23
Views: 10889

Re: LCD display [Advise needed]

Anyone using st7920? I am looking for 128x64 lcd with big screen and cheap. If you are using, which library you are using.
by vahithosan
Tue Sep 17, 2019 10:57 am
Forum: ESP8266 boards
Topic: ESP8266 + MCP23017 + Rotary Encoder
Replies: 3
Views: 714

Re: ESP8266 + MCP23017 + Rotary Encoder

I have no more pins on esp8266. I used it for SPI. so I want to run the rotary encoder via mcp23017. I will try EncodeLib modify like this and I will share the results from machine import Pin from machine import Timer class encoder: # Init variables encoder_clk_prev = False i = 0 def __init__(self, ...
by vahithosan
Mon Sep 16, 2019 7:50 pm
Forum: ESP8266 boards
Topic: ESP8266 + MCP23017 + Rotary Encoder
Replies: 3
Views: 714

ESP8266 + MCP23017 + Rotary Encoder

Hi, I want using rotary encoder over mcp23017 i/o expander. But esp8266 freeze. I use those libraries: Rotary encoder: https://github.com/BramRausch/encoderLib MCP23017: https://github.com/ShrimpingIt/micropython-mcp230xx import mcp import encoderLib io = mcp.MCP23017() io.setup(8,mcp.IN) io.setup(9...
by vahithosan
Mon Sep 18, 2017 1:57 pm
Forum: Drivers for External Components
Topic: Bosch BME280 driver
Replies: 42
Views: 24986

Re: Bosch BME280 driver

Hi. I am using the BME280 sensor with ESP-12. i measure indoor. (unused room) and the place of the esp board does not change Im running script one per hour an goes deepsleep. I use 2 lipo battery and HT7333 ldo. My questions is why the pressure values are unstable. DATE TEMP HUM PRESSURE 2017-09-18 ...
by vahithosan
Sun Sep 10, 2017 2:14 pm
Forum: ESP8266 boards
Topic: [SOLVED] DS3231 uRTC set / read problems
Replies: 37
Views: 13733

Re: [SOLVED] DS3231 uRTC set / read problems

Hello deshipu, vahithosan, @vahitosan : Is your modified version of the lib do the trick ? I mean, in your 1st post you wanted to use an external DS3231 in order to wake up an ESP8266 from deepsleep. Did you succeed ? This is exactly what i want to do. @deshipu : can you confirm you didn't merge th...
by vahithosan
Tue Aug 22, 2017 3:20 pm
Forum: ESP8266 boards
Topic: Power usage, sleep modes
Replies: 2
Views: 1023

Re: Power usage, sleep modes

I am interested in this issue (especially Modem sleep) because ADC is unstable wifi on.

http://www.radupascal.com/2016/09/20/re ... on-esp8266
by vahithosan
Sun Aug 20, 2017 1:18 pm
Forum: ESP8266 boards
Topic: microSD card reading
Replies: 20
Views: 13024

Re: microSD card reading

Hi. What is the CSD format. >>> import os, machine, sdcard >>> sd = sdcard.SDCard(machine.SPI(1), machine.Pin(15)) File "<stdin>", line 1, in <module> File "sdcard.py", line 54, in __init__ File "sdcard.py", line 100, in init_card OSError: SD card CSD format not supported My sd card is fat32 formatt...
by vahithosan
Sat Aug 12, 2017 5:24 pm
Forum: ESP8266 boards
Topic: timezone support in MicroPython ?
Replies: 14
Views: 6953

Re: timezone support in MicroPython ?

Hi, I need to store exact time and date for my city. So, I inserted in boot.py the following code: from ntptime import settime settime() so, I can read time by: import utime utime.localtime() Isn't there a timezone support and legal/solar time support ? How I to do ? I think . You will use rtc. imp...
by vahithosan
Thu Aug 10, 2017 9:55 pm
Forum: ESP8266 boards
Topic: [SOLVED] DS3231 uRTC set / read problems
Replies: 37
Views: 13733

Re: [SOLVED] DS3231 uRTC set / read problems

I'm not sure if that helps, but you can always use the _register and _flag methods on the urtc object to talk to the chip directly, and thus set whatever settings you need. Thanks. I just started working on micropython. Your library file was very instructive I made changes to the urtc file. Because...