Arduino
u8g2
Arduino | u8g2 | |
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96 | 39 | |
15,763 | 4,768 | |
0.3% | - | |
8.1 | 8.6 | |
14 days ago | 4 days ago | |
C++ | C | |
GNU Lesser General Public License v3.0 only | GNU General Public License v3.0 or later |
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Arduino
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Send and receive message remotely with ESP8266
The result is that the WiFiSecureClient doesn't work when used in the bot declaration, so I changed the variable to WiFiClient but I can't use the certificate, so I comment it out and ESP8266.h gives me a thousand errors due to lack of dependencies in its libraries. I should point out that I downloaded the entire project from the Arduino ESP8266, I don't know how to link all the libraries, so I simply took those from the ESP8266WiFi.
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Do you have any idea why this program would not work? [ESP32]
#include #include "time.h" #include "sntp.h" char* ssid = "WIFI"; char* password = "w1fi"; const char* ntpServer1 = "pool.ntp.org"; const char* ntpServer2 = "time.nist.gov"; const long gmtOffset_sec = 3600; const int daylightOffset_sec = 3600; const char* time_zone = "CET-1CEST,M3.5.0,M10.5.0/3"; // TimeZone rule for Europe/Rome including daylight adjustment rules (optional) void printLocalTime() { struct tm timeinfo; if(!getLocalTime(&timeinfo)){ Serial.println("No time available (yet)"); return; } Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S"); } // Callback function (get's called when time adjusts via NTP) void timeavailable(struct timeval *t) { Serial.println("Got time adjustment from NTP!"); printLocalTime(); } void setup() { Serial.begin(115200); // set notification call-back function sntp_set_time_sync_notification_cb( timeavailable ); /** * NTP server address could be aquired via DHCP, * * NOTE: This call should be made BEFORE esp32 aquires IP address via DHCP, * otherwise SNTP option 42 would be rejected by default. * NOTE: configTime() function call if made AFTER DHCP-client run * will OVERRIDE aquired NTP server address */ //sntp_servermode_dhcp(1); // (optional) /** * This will set configured ntp servers and constant TimeZone/daylightOffset * should be OK if your time zone does not need to adjust daylightOffset twice a year, * in such a case time adjustment won't be handled automagicaly. */ configTime(gmtOffset_sec, daylightOffset_sec, ntpServer1, ntpServer2); /** * A more convenient approach to handle TimeZones with daylightOffset * would be to specify a environmnet variable with TimeZone definition including daylight adjustmnet rules. * A list of rules for your zone could be obtained from https://github.com/esp8266/Arduino/blob/master/cores/esp8266/TZ.h */ //configTzTime(time_zone, ntpServer1, ntpServer2); //connect to WiFi Serial.printf("Connecting to %s ", ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(" CONNECTED"); } void loop() { delay(5000); printLocalTime(); // it will take some time to sync time :) }
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How do you determine what module/s do you have on your boards or vice versa?
https://github.com/esp8266/Arduino http://arduino.esp8266.com/stable/package\_esp8266com\_index.json https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers?tab=downloads
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Programming esp32
He meant the Arduino framework. There is an Arduino core for the ESP8266 so you can use Arduino’s IDE and libraries for the ESP with this core here
- rst cause:2, boot mode:(3,6) ERROR :(
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Help Needed: ESP NOW between ESP Wroom 32 DevKit and WeMos D1 Mini.
According to this link(https://github.com/esp8266/Arduino/issues/6174) WeMos can't receive broadcasts on SDK 2.2.1.
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ESP8266 on ESPNow protocol power consumption/sleep mode
There are 2 ways to minimize power consumption while maintaining an active WiFi connection, but it's not a large power reduction for either mode. Look at Automatic Modem Sleep and Automatic Light Sleep here: https://github.com/esp8266/Arduino/tree/master/libraries/esp8266/examples/LowPowerDemo
- Very unique color clock! Details on https://www.instructables.com/Pingo-Color-Clock-by-Illusionmanager/
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lolin boards in close proximity are causing WIFI interferance
That's the Arduino (Uno) library. If you've correctly installed the ESP8266 package then it should be 3.(something-ish) for the ESP8266 version of the WiFi library. Current is 3.1.1 for the core files, and the WiFi is part of the core libraries. If you have your compile options set for verbose then you should see it doesn't access that old Arduino WiFi library.
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Is there any way to get a low battery alert from a D1 mini?
Seems it's expected https://github.com/esp8266/Arduino/issues/721
u8g2
- DIY Mahjong Scorer Guide with Chito - mahjongAsst
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Anyone had success displaying anything on GME64128-11 type displays?
Try the https://github.com/olikraus/u8g2/wiki library.
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I need help with transparent display. More info in the comments
If you want to stick with the u8g2 library, be sure to check out the u8g2 wiki for some more information. There's a lot of info on the setup page and I find the u8g2 reference especially useful in practice.
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Arduino with OLED
Check out the U8G2 library if you're going to work with OLED displays. It's really the best one out there and it does it all, supporting multiple OLED displays with the one library. It also has excellent support for numerous fonts in different sizes.
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Library design that is not fixed to a specific mcu
I have been considering two different methods for achieving this. The first method is the one that Olikraus uses with the u8x8 library, which implements a callback system that handles the hardware abstraction layer. The second method that I have been contemplating is using i2cdev, which allows for sharing the i2c port with other threads.
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Sketch - Cardboard - Improved cardboard. Next step: Laser cut case
I use the u8x8 library (https://github.com/olikraus/u8g2/wiki/u8x8reference) for the display. I like this library a lot!
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I need some help, I want to "rotate" the screen by 180 degrees. I am just printing some simple data on the screen for my modified nerf gun. Any advice on how to do it?
Use u8g2, awesome library, very flexible, works with everything.
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Both SH1106 and SSD1306 displays..?
Try U8G2. It works with both these OLEDs and many more.
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STM32F411RE and SH1106 OLED Display
For displays like this, I strongly recommend the U8G2 (https://github.com/olikraus/u8g2) library. It has support for pretty much everything. However, you might need to find/write/tweak your own "hal" later, which is just a couple of simple callback functions that bridge it to the I2C or SPI ports of your MCU.
- 128x64 OLED display not working properly
What are some alternatives?
ESP8266_RTOS_SDK - Latest ESP8266 SDK based on FreeRTOS, esp-idf style.
TFT_eSPI - Arduino and PlatformIO IDE compatible TFT library optimised for the Raspberry Pi Pico (RP2040), STM32, ESP8266 and ESP32 that supports different driver chips
ESP8266-Google-Calendar-Arduino - Interaction between an ESP8266 and the Google Calendar.
u8g2-hal-esp-idf - U8g2 compatibility component for esp-idf on ESP32
ESP8266_NONOS_SDK - ESP8266 nonOS SDK
SparkFun_Micro_OLED_Arduino_Library - Arduino library for the SparkFun Micro OLED - a breakout board for a monochrome, 0.66", 64x48 OLED display.
brzo_i2c - Brzo I2C is a fast I2C Implementation written in Assembly for the esp8266
SPI_LCD - A simple C library for directly communicating with SPI-connected LCD displays
esp-honeypot - Simple ESP8266 / ESP32 Canary that simulates predefined application server and notifies you using E-mail, Telegram, etc if it was accessed.
ArduinoCore-avr - The Official Arduino AVR core
esp-idf - Espressif IoT Development Framework. Official development framework for Espressif SoCs.
UTFT-ESP - UTFT with support for ESP8266 and ESP32