NEED URGENT HELP WITH ARDUINO IDE

I am doing a project on smart trolley but I am having problem where the rfid card cannot be detected I have check everything and it work just fine with […]

The voltage of the RXD and TXD depends on the VCC pin, right?

Morning guys; I bought an HW-624 to connect to the console of my SBC and ESP. However, the “documentation” is anything but clear … it’s actually quite confusing. Here are […]

How to Reverse the Output of a Reed Switch Circuit to HIGH?

I’m using a circuit that gives a LOW output on D when a magnet passes by the reed switch. Is there a way to make it output HIGH instead? (HIGH […]

Can I Use a Single Pin as Both Rx and Tx on an ATtiny85 for Software Serial?

Related question: I’ll likely use an ATtiny85 for this project, meaning limited IO pins (WIP schematic pictured). I’ll mostly be listening for signals with a software serial Rx pin, but […]

Anyone having experience in extending I2C bus length using P82B715?

Anyone having experience in extending I2C bus length using P82B715?

multidrop bus for vending machines

I want to start a project on multidrop bus interface using rs232 . Those who have expertise please ping me

TFT display

any suggestions for learning parallel TFT interface from scratch?

Establishing Communication Between ESP32 and R307 Fingerprint Sensor: Initialization Issues

How do I set up and establish communication between the ESP32 and the R307 fingerprint sensor, ensuring that the sensor can be recognized and initialized by the ESP32? My aim […]

Optimizing 8-bit Parallel RGB Interface on Nucleo-F411RE: Timer Interrupts or DMA?

I’m working on a project to control a display using an 8-bit parallel RGB interface with the Nucleo-F411RE, requiring a 1 MHz PCLK. Since the STM32F411RE lacks LTDC peripherals, I […]