Any one can Implement ESP32 act as Slave in Mdbus RTU protocol and respond to...
plz Help me for Implement Slvae functionality on ESP32 2 posts - 2 participants Read full topic
View ArticleFastCRC with Home Assistant
Hi I've been building my home automation and being an electronics designer I wanted to make my own zigbee2mqtt devices. For this I'm using ptvo.info firmware which offers two way UART. The problem is,...
View ArticleError "Redefinition of SoftwareSerial
Hello I have a code that used to work. But suddenly, I get a huge error related to my SoftwareSerial. Does anybody see my mistake? I can't find it. The definition is copied from the adafruit thermal...
View ArticleArduino change interrupt does not work
I am using mega with interrupt pins 2, 3 and 19.. The problem is when pin voltage (5V) change from 0 to 5V it triggered but when 5V to 0 sometimes it does not triggerred I have tried debouncing as 5...
View ArticleSending data to multiple slaves to single master via RS485
Hii, I get data from slave to master ,I confined the slave data send to master. That we know the send multiples salve data to single master Please suggest any blog or documentation Using Arduino UNO,...
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Silicon Labs and "Matter"
Nothing here WRT: Arduino and Silicon Labs team up to make the Matter protocol accessible to all | Arduino Blog ? "Matter" - right up there with "Wiring" and "Processing" WRT internet searchability...
View ArticleAdafruit thermal printer
Hello everybody, About a year ago I wrote a code for an adafruit thermal printer. As the wiring was really bad back then, I'm fixing it now. But my wiring doesn't work anymore... The printers RX and...
View ArticleNano OSX problem uploading
Orig Nano - OS 10.13.16 Trouble uploading to Board. I made sure Nano was selected and Port shows it is reading Nano. Nano is not a clone but has the FTDI 2216. Driver was uploaded from FTDI. I...
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Brain fried trying to work out Hex address of PCA9685
Hi Got a PCA9685 PWM driver on i2c bus. Digi-Key Electronics PCA9685PW,118 | Digi-Key Electronics Order today, ships today. PCA9685PW,118 – LED Driver IC 16 Output Linear PWM Dimming 25mA 28-TSSOP...
View ArticleUsing WS2811 as IO expander
Hi , some questions about WS2811 does it - always - remain in output high Z state , after power on ? when it is driven to 100% LOW , (255) , is it always low , or is there a glitch 1/256 of the time ,...
View ArticleArduino loading screen
Hello there, I downloaded Arduino 2.3.1 and did as instructed but it won't completely open. After double click Arduino IDE a white screen opens with the Arduino Logo in the center and that's it. I am...
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ADS1115 not getting initialized
Hello, I've connected Arduino Uno with ADS1115. The output shows "Failed to initialize ADS". I tried the code for esp32 with the same ADS and it works fine. I came across similar questions on the...
View ArticleLED RGB strip 12V
Hi, I have a digital RGB led strip with 4 channels: +12vdc GND GND DIN Why does it have 2 GND channels? I hope somebody can help me with this question. Thank you. Yvonne 2 posts - 2 participants Read...
View ArticleUsing a 74HC138D for Chip select selection . problem with MCP23S17 class...
Hi all, I have a design were I need many chip select on a DAB receiver . The core is an ESP32 with a adding a MCPS17 IO expander 16 IO pins. I have also need 7 chip select. (sorry I can't put the...
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3 push button for one action
Hi Guys, I try to find something for my idea but not lucky yet. I want 3 push button, for one LED. So you have to hit every push button before LED goes on. One button more for LED goes off. is it...
View ArticleArduino.h:107:16: error: expected ';' before '_UART_USB_' #define Serial...
Hi, after upgrading from IDE 2.2 to 2.3.1 unexpected error on compiling my sketch MY_ESS_22Q216 on GIGA R1, using ArduinoModbus and ArduinoRS485 libraries! I I have had redirected the communication...
View ArticleArduino IDE sometimes doesn't upload code to Arduino nano
I'm working on a project that's using a couple of sensors and a electrical motor, and testing features little by little, but when I try to upload code to the Arduino nano, sometimes it uploads with no...
View ArticleTeensy 4.1 Crashing
Hi. I have a teensy 4.1, and it's running some relatively light IMU calculations. I've been using 1 cable to program it and it's been working well for over a month. Today, my laptop did not recognise...
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MFRC522 not Working on ESP8266
Hello Everyone, Im working on my rfid project using ESP8266 however Im encountering this problem, my rfid scanner does not read. I already checked my wirings and my code seems fine and I don't get any...
View ArticleCreate a new network with esp8266
hy guys i need to create a network connect my outdoor access point with it. My outdoor access pint works great, but i need a wifi network to connect the acesspoint witih it. here is the problem: i...
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