1. Answerzzz

    Ultra low power transmitting for short distance

    Hi, I am using a small battery to power both a sensor and a transceiver to send a signal for ~500 meters. I am looking for the lowest power-consuming method. I don't really care about how low my transfer rate. 1 sample per 1 is good enough For my sensor, I was thinking of using a Thermistor...
  2. H

    ESP32 I2S dma buffer malloc failed after ble init

    Hello, I have ESP32 project that read data from INM441 microphone, after some processing ESP32 will send pattern to another ESP32. I have test BLE code and I2S read INNP441 separately and successfully. However, when I put them together, I get this error Rebooting... ets Jun 8 2016 00:22:57...
  3. pcmann2004

    BLE rate counter

    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...
  4. andkr

    Suggestions on choice of antenna in direction finding system using BLE

    Hello! I am currently doing a school project where we are going to design a direction finding system using antennas and an automated robot arm to adjust to angle. From what we have read the most reasonable choice of antenna is either a yagi or parabolic antenna. The robor arm is fairly small...
  5. Answerz

    PsOC 4 BLE (pins problems)

    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...
  6. H

    Designing a simple BLE peripheral

    Hello everyone, I'm new to the RF circuits design. I'm a mobile app developer with some basic electronic skills and I need to design a simple BLE peripheral controlled by mobile devices (Android and iOS). The main feature of the peripheral must be to trigger an electronic switch when tapping on...
  7. I

    T.I. BLE USB MCU Programming Trouble (CC2540)

    Hello Everybody! I am trying to program/communicate with the CC2450 BLE IC, which is a transceiver/microcontroller. My computer is having trouble recognizing the device. It does not show up in Device Manager. I've tried the T.I. tools for trying to communicate with it. I've downloaded the BLE...
  8. V

    How to increase range of a BLE chip

    Hello I have an RN4871 Bluetooth chip and integrated it with my micro. The chip is scanning for nearby BLE devices and reporting them to the host micro via UART. However, I see that the range of this chip is just 10 m. I could buy RN4870 and increase the range to 50m, but that's still not...
  9. G

    How can you design a PCB for climate control as well as to turn on lights via relay?

    I’m pretty much a noob when it comes to hardware and for awhile I have been trying to figure out how to design a PCB layout. The Problem I have is trying to figure out the values for capacitors and resistors how to connect them with the other parts (like pull up resistor, bypass capacitor etc...
  10. J

    From Arduino nano 33 iot to PCB, programming MCUs

    Hi!, I would like to convert my project, which I deployed with the arduino nano 33 iot, into a custom PCB. I have already created my layout design based on the arduino schematics provided on their website. My concern is how I am going to program the code. I have some main doubts: - The BLE...
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