There is a similar UART port on the Cyton mainboard for communication between the PIC32 (main microcontroller) and the mainboard RFduino, which handles the wireless (Gazelle / Bluetooth / custom proto

using a custom RFduino firmware from RFDigital ('Gazelle' protocol). This radio channel is already operating at maximum bandwidth of 250 radio packets per second. It cannot go any faster due to radio

using a custom RFduino firmware from RFDigital ('Gazelle' protocol). This radio channel is already operating at maximum bandwidth of 250 radio packets per second. It cannot go any faster due to radio

Then you are NOT using Wifi Shield, but the original Bluetooth-Gazelle radio protocols. So that makes the spikes you are seeing even more unexplainable. Many of the clone makers are shipping nested bo

Then you are NOT using Wifi Shield, but the original Bluetooth-Gazelle radio protocols. So that makes the spikes you are seeing even more unexplainable. Many of the clone makers are shipping nested bo

No, this is not true. Bluetooth is used, but it is NOT BLE. It is a custom protocol called GZLL, Gazelle. Not compatible with BLE. This is why the dongle must be used.

Cyton uses a custom Bluetooth protocol called 'Gazelle', that is much faster than Bluetooth Low Energy. So Cyton and the dongle cannot be converted to plain BLE, it just does not have enough bandwidth

and the dongle is limited by the Bluetooth / Gazelle maximum packet rate of 250 packets per second, each 33 bytes long. Even if you could connect more channels to the Cyton, there is no radio bandwid

There is not enough radio bandwidth "to expand to even more channels". The Bluetooth 'Gazelle' protocol being used can only handle 250 packets per second, each packet 33 bytes. Does that mak

I want to point out to @teknomage, that any issues he is seeing with the very experimental / not-supported, alpha stage BLE code, cannot be easily resolved at this time. As the author A J Keller has m

BTW, someone have the GAZELLE library customized for OpenBCI Radios available? Just downloaded the RFDuino (very old and discontinued) but I think the GAZELLE lib that comes with the original RFDuino

You cannot implement Nordic Gazelle protocol, using the Android BLE stack. Gazelle is proprietary to Nordic. Gazelle is used in the Cyton RFduino dongle, and the RFduino radio processor on the Cyton m

In the case of Cyton, the RFduino's do not actually speak official BLE, they speak a special proprietary low energy Bluetooth called GZLL, Gazelle; from Nordic Semiconductor. This was done to achieve

The RFduino (dongle and mainboard) use a special Nordic protocol called Gazelle, or GZLL. They do NOT speak normal Bluetooth. GZLL is only available for the RFduino chip, as it is a proprietary protoc

The RFduino (dongle and mainboard) use a special Nordic protocol called Gazelle, or GZLL. They do NOT speak normal Bluetooth. GZLL is only available for the RFduino chip, as it is a proprietary protoc

As I understand it, normal Bluetooth operation 'skips' around constantly to the various radio channels that are available. Conversely, the customized 'Gazelle' protocol that RFDigital created for Open

The Cyton RFduino radios speak an unusual Bluetooth protocol named Gazelle. It's not compatible with Bluetooth Low Energy or Bluetooth Classic.

re: Cyton over Bluetooth. Unfortunately, no Cyton and it's dongle use a special Bluetooth protocol from Nordic, called Gazelle (GZLL), that optimizes the radio bandwidth necessary for high data rates

Correct, BLE code is not in Cyton, it uses a different radio protocol. However if you use Search box at right for "AlphaWave", you'll find a V1 firmware variant by Hassan that sends limited

@joe50 The firmware that decides whether its BLE or Gazelle is the RFDuino radio firmware, not the Microcontroller.