HC-05 Bluetooth – setup and troubleshooting

Setup and troubleshooting HC-05 Bluetooth module with Arduino, especially the annoying reverse question mark problem.

Setup and troubleshooting HC-05 Bluetooth module with Arduino, especially the annoying reverse question mark problem.
Who says an alarm clock just has to beep, or annoy you in the mornings? Certainly not MakeUnited, who’s put together an Arduino Nano verbal reminder project over on Instructables. His device lets you program a whole bunch of alarms that each play a specific MP3 file. The REMIND-INO is styled to look like a…
Arduino Yún board launched in 2013 was the first official Arduino combining Arduino and Linux thanks to respectively an Atmel ATMega32u4 microcontroller, and Atheros AR9331 MIPS WiFi SoC running Linino, a fork of OpenWrt maintained by Arduino. The new Yún has a similar configuration to the original board, and uses the same two processors, making…
We are used to seeing clocks with 7-segment displays which, through the switching on and off of some LEDs, form the numbers. This project is different, in fact instead of the LEDs we find stepper motors that, by setting the rods in motion, allow the visualization of the numbers as if it were a classic…
Adafruit has announced it will soon be launching its new Adafruit Crickit development board designed for Circuit Playground Express. The new board has been designed as an add-on development board for the popular Circuit Playground Express to aid with the construction of robots supporting CircuitPython, MakeCode (coming soon), or Arduino. “The Crickit is powered by…
The project Open Ardbir is largely inspired by the original project formerly Braudino from Stephen Mathison and then upgraded and modified by Mike Wilson under the Mike’s Brewery appellation and is been completely reviewed by Max Nevi and Italian team (Alessio, Davide, Luciano, Luigi, Piero, Savio) Lot of enachement and new features have been introduced…
In this project, we have presented a disinfection system for disinfecting helmets. This system is based on ultra-violet sterilizer technology. This system is helpful for disinfecting helmets. More info Build it yourself Boards, sensors and kits for projects like this one. Browse the shop
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