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by cazevedo
Tue Aug 01, 2017 1:32 pm
Forum: Manuals & Documentation
Topic: Use of electrodes
Replies: 14
Views: 13223

Re: Use of electrodes

Hi Hélio, The signal is indeed inverted if you swap the positive electrode with the negative electrode. However this doesn't have any impact on the information that the signal provides and on what can be extracted from it, that is why I refer that the placement order is indifferent. If you have an a...
by cazevedo
Thu May 04, 2017 8:33 am
Forum: Programming APIs
Topic: [BLE APIs]
Replies: 1
Views: 215

Re: [BLE APIs]

Hi,

Right now only the Android and iOS APIs support BLE communication. The remaining only communicate via Bluetooth Classic.

Best regards,
Carlos Azevedo
by cazevedo
Wed Apr 26, 2017 8:59 am
Forum: I/O
Topic: Ionic bluetooth with Bitalino
Replies: 3
Views: 470

Re: Ionic bluetooth with Bitalino

Hi Jared, On the Data Packets section of the MCU datasheet : http://bitalino.com/datasheets/REVOLUTION_MCU_Block_Datasheet.pdf you can find the data packet structure sent by device while in live or simulated mode. This should be enough for you to parse the received frames, but if you experience furt...
by cazevedo
Tue Nov 22, 2016 8:39 am
Forum: Programming APIs
Topic: Python API for BiTalino BLE
Replies: 8
Views: 1794

Re: Python API for BiTalino BLE

Hi Pedro,

How many channels are you acquiring simultaneously? Or if it is more convenient for you, what is the start command byte that you are sending?
Does that happen every time? Have you tried on a different computer or with a different BLE dongle?

Best regards,
Carlos Azevedo
by cazevedo
Thu Nov 03, 2016 6:06 pm
Forum: Sensors
Topic: EDA senses ECG when ECG and EDA sensors are used together
Replies: 1
Views: 803

Re: EDA senses ECG when ECG and EDA sensors are used together

Hi there, The problem seems to be correlated with the reference point that you are using. I would recommend that you use the same reference point for both sensors, otherwise the resistors will be in parallel. I also recommend that you use a buffer as shown in the diagram bellow. IMG_20161103_175056....
by cazevedo
Thu Nov 03, 2016 12:04 pm
Forum: Programming APIs
Topic: Python API for BiTalino BLE
Replies: 8
Views: 1794

Re: Python API for BiTalino BLE

Hi there, The frames sent by the BITalino are sent through notifications via the "Frames" characteristic (UUID="40fdba6b-672e-47c4-808a-e529adff3633"). This characteristic has the notification property so if you perform a descriptor search in the "Frames" characteristic...
by cazevedo
Wed Oct 19, 2016 10:57 am
Forum: I/O
Topic: Interface with MCU using FTDI UART
Replies: 29
Views: 5663

Re: Interface with MCU using FTDI UART

Hi there, In fact the the API didn't account the use of the flow control and so the tests were performed only using the Tx, Rx and GND connected. So what is happening is that the RTS pin of the FTDI stays high when the flow control is disabled in the C++ API. So in this case the computer is able to ...
by cazevedo
Thu Oct 13, 2016 11:28 am
Forum: I/O
Topic: Interface with MCU using FTDI UART
Replies: 29
Views: 5663

Re: Interface with MCU using FTDI UART

Hi there, If you don't want to use the flow control you can simply connect the GND, RX and TX pins. If you want to use the flow control also connect the FTDI RTS pin to the BITalino CTS pin and the FTDI CTS pin to the BITalino GND pin. This because the BITalino only makes use of the CTS pin, since t...
by cazevedo
Wed Aug 31, 2016 9:24 am
Forum: Troubleshooting
Topic: The Communication Port does not exist or it is Already Being Used
Replies: 6
Views: 3621

Re: The Communication Port does not exist or it is Already Being Used

Hi jtvilm, The PLUX API and consequently the OpenSignals BLE communication implementation requires the use of a specific BLE dongle. So in order to use the BITalino BLE with OpenSignals you need to use this BLE dongle: https://store.plux.info/accessories/207-bitalino-proven-ble-dongle-810121502.html...
by cazevedo
Fri Apr 08, 2016 1:57 pm
Forum: Microcontroller
Topic: Burning Firmware on Arduino
Replies: 8
Views: 2839

Re: Burning Firmware on Arduino

Hi Rahul, 1. The BiTalino clock speed is 8MHz so you will need to change that on the source code. 2. I never worked with the WiFi SoC ESP8266, but in order to start/stop an acquisition and choose the the acquiring frequency you need to send specific commands to the microcontroller via UART. 3. I nev...

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