bluetooth

Hi everyone, I'm working with a Silicon Labs BGM121 microcontroller using Simplicity Studio, and developing in C. Server: My BGM121-based device (referred to as "marker") that streams raw sensor data over BLE. Client: Either the Silicon Labs Si Connect app on a phone or a Raspberry Pi 5...

I have a RII bluetooth keyboard that I really like, but it has two shortcomings I'm interested in modifying if possible. I've included pictures of what's inside a RII model that's close to the one I'd like to modify (mine is essentially the same design minus the touchpad). 1) The keyboard...

Hi everyone, I’m facing issues with my nRF52 BLE design due to a solder mask thickness change and grounding approach. I’d appreciate expert guidance on retuning the Pi filter, recalculating impedance, and resolving grounding concerns. Issues Faced: Solder Mask Thickness Change: Ref NRF52 DK...

Hi there, I recently got an old GoldStar GSM-6330 and wanted to add an internal Bluetooth-receiver to it, without sacrificing any of the existing functionality. I decided for some cheap Bluetooth receiver board. You can see on this image, how I wired everything. (I stole the +-12V from the...

"A surface wave antenna operating in the 2.4 GHz band and efficient for launching surface electromagnetic waves at metal/dielectric interfaces is presented. The antenna operation is based on the strong field enhancement at the antenna tip, which results in efficient excitation of surface waves...

I am using a neckband. And it irritates me when it reached 20% battery life by saying low battery. How can I remove that indication by changing my firmware of the neckband.

Hi everyone I'm doing a little project at home and came across an issue. So I'm trying to convert my old Bose QuietComfort 15 to wireless headphones. The stock version uses a AAA alkaline battery and only has an AUX connector for the audio. I'm integrating a rechargeable battery and bluethooth...

Hi, We are using Raspberry Pi4 with Zero Pi Codec. We are getting audio from a stereo mic and want to transmit this audio to Bluetooth headphones. The program works fine until we want to connect it to Bluetooth. It connects for 5 seconds but it disconnects. We are using the code in Python and...

I am creating a student response system for my classroom. I have create a Bluetooth mesh to keep the power low. The device will only be used a for a few minutes per lesson each day. I was wondering if it would be possible to charge the battery using solar power, as there would be such a small...

I'm trying to run the Classic Bluetooth "acceptor" example: https://github.com/espressif/esp-idf/tree/master/examples/bluetooth/bluedroid/classic_bt/bt_spp_acceptor With the same sdkconfig configuration settings as the example I turn on the bluetooth in the phone. I select the ESP32 device...

Hi, I have stacked.. Im trying to connect my Bluetooth module ZS-040 (HC-06) to raspberry pi 3 model b+ for receiving data from mobile phone. I have tried everything but can’t connect. I need python code. I m using serial Bluetooth terminal app on my android phone. I have this code. My code runs...

Hello, I have the broken bluetooth module that you can see in the picture below. Noted in RED 1 and 2, are the two places where an SMD inductor should be. I salvaged one SMD inductor going there, which you can see in the picture below: However, I destroyed it while trying to connect leads...

I'm developing a small device to send keyboard keys (char/letters) to iPhone and Android devices I am receiving ASCII data on a serial port of uC, I want to send it to iPhone/Android through a Bluetooth module. I'm looking for some very cheap solution from aliexpress.

Hi! I have a circuit consisting of audio input from a microphone, which then gets amplified. This is then sent to a ADAU1467 dsp. Now I would like to add a bluetooth module BM83 to the circuit but I'm new to all of this and don't really know how to connect the module to my circuit. The thing...

Hey guys... I have some "basic" skill in electronics, but I do like to tinker. I have a mid-'80s TERMINATOR by Synsonics guitar. For those who never heard of it, it was a 3/4 size guitar with a built in amp and 3.5" speaker. All-in-One guitar and amp for kids to learn on. I got one that needs...

I am trying to figure out the best way to connect multiple BLE chips to a phone/tablet. the BLE chip would send a open/close rate, EG how many times a switch opens/closes in a given time. Does anyone have a way of doing this? would the heavy lifting be done on the BLE chip side of things or on...

Hello all, Caution, I am a newbie to MCUs. I am looking for a low cost MCU board with Bluetooth for communication with mobile app. I have purchased NodeMCU which comes with onboard WiFi. However, I would like to talk to MCU via Bluetooth directly. If I use NodeMCU or ArduinoNano, I would have...

I am running a project using a thermistor. I started by using the evaluation board as shown: The program runs fine. After that, I removed the module from the evaluation board and powered the module using an external power source (3V). I moved the resistor and thermistor from the evaluation...

Is there any way to connect 3.5mm TRRS to F-6188 v4.0.

Hello, I made a breakout board for the STM32WB55 and want to use the bluetooth capability of it. Since I never did any layout with RF specs, I wanted to ask some experienced people wether or not the board I designed would 1.) boot up, and 2.) would be able to use the bluetooth feature. The top...