![]() But at that point, you might as well buy one from a decent source where they guarantee the baud is configurable (and has instructions on how to do so). With this sketch you should get to send the AT commands, I think you also have to take out the carriage return and linde feed options in the Serial Terminal. ![]() The modules I've bought tend to have a baud anywhere between 12, so if you pick up a few of them, you might get one that is at the lower baud you want. However, from the BLE specifications, much more should be possible. This already works but it takes a long time (0.5 seconds) to transfer a few bytes. It may not be possible without de-soldering the chip(s) from the modules and programming them using the development kits and/or programmers.įor cheap options, you might want to look at bluetooth modules which are designed for faster digital data such as audio - but then they will not register as serial data dongles from the USB side, so you may have to jump through hoops on the PC side to make a software adaptor that hi-jacks the audio and makes it available as serial data. The device supports only 1843200 bps for baud rate. In the following, for simplicity, I have reduced the program to transmit integers via BLE. Everything was working just fine, until I recently did some changes. The data sent match only if Oscilloscope baud rate is 9600. I am using Bluetooth serial terminal Windows 8 program to send and receive data from the Bluetooth device. There, a very useful program called 'CooltTerm' receives the data and saves it into a. The ATmega328P uses a hardware divisor from its clock-rate to generate the base-clock for the serial interface. Then open a Serial Port Tool, like CoolTerm or others.The following are some settings. I need to change a baud rate of my Bluetooth module, I have tried it via Windows Bluetooth settings of the particular Bluetooth device, but that doesn't work. ![]() I suggest you look at datasheets for all the chips on the module, and see which are programmable, and how they can be programmed. After a certain time (standard is 4h) the results are sent to a PC. I know there are modules where you can configure the baud rate, but they are far more expensive - I believe the cheap modules were designed for a specific purpose which never got used in the product they were designed for. Saying that, I've been buying cheapo modules from eBay - probably 5 or 6 different types. For example, UARTFIFOLEN defines the length of hardware FIFO buffers UARTBITRATEMAX gives the maximum baud rate supported by the UART controllers, etc. There is certainly no way to do it through windows or the serial interface. They all make use of a USB chip which is programmable, but it gets very technical. I have at least 10 of them because I use them so much, and have often wanted a faster speed. I've been playing around with such modules for years.
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