I am testing a Bittle for some educators at the moment and they are also going to buy a Nibble to test as well. We want to program then using the python library running on a PC and sending the command via Bluetooth to the robots. Where can I buy 2 x Bluetooth dongles from?? and Also buy a Nibble at the same time. I can't find anywhere that is selling the Bluetooth Dongles and the only place that seems to be selling Nibble is the Indeigogo campaign. Also is there ETA on the new Biboard release date?? I am also wondering if you sell the servos separately as well as they are very nice servos and would go very nice with some of my own robot projects?

I am new to Bittle and have just received a unit and so far have just operated it with the IR remote. I did do some reading on your challenges page that sound super interesting. I did notice that 1 of the biggest restraints is the MCU processing power and available RAM. I have also noticed that an ESP32 main board is under development and this will fix this problem but will add a new problem that ESP32 has very low pin count. I also notice that your currently using a PCA9685 IC to create the PWM signals for servo control. The PCA9685 is driven via I2C which is a very slow protocol, I am not sure whether your using the MPU6050 in I2C mode or SPI mode (all the quad-copter drones use SPI mode for faster feed back loops). Have you looked at the K210 MCU? It is a dual core 64bit RISC-V chip clocked at 400MHz (most people have been over clocking to 600MHZ) with a number of hardware accelerators and lots of RAM and large pin count. Having a fast MCU with lots of pins means you won't need the PCA9685 as the PWM can be generated by the timers on the MCU meaning very fast updates compared to an external I2C chip. The K210 also has it's own parallel camera, LCD and mic peripheral as it is desinged to run AI on the edge. Sipeed make a moudule for the K210 that has all the need supporting circuits like crystal oscillators and capacitors and also an ESP8266 for Wifi connectivity. see the module here https://www.aliexpress.com/item/1005001956894670.html?spm=a2g0o.productlist.0.0.13111a07Mvn3fX&algo_pvid=a7700f87-27bf-48f1-9ef6-5ef2263ed9f8&algo_exp_id=a7700f87-27bf-48f1-9ef6-5ef2263ed9f8-14 I have used Sipeeds Dev boards for controlling some of my robot that I have built that needed computer vision on the edge.

I work with educating kids about robotics. One of the organizations that I work with has just ordered a bittle. I have been watching the opencat develop since very ear;y days when it popped up on Haster.io All the educators that I work with are teaching with either scratch based for younger kids or python based for older kids. I notice the low level functionality of the robot is Ardunio based. I did also notice the is a graphical interface developed as well. I also notice that RPi can be connected to the NyBoard as well. I need to do some research and learn how to drive the robot for when it arrives. I would like to know more about the RPi interface. Can the RPi act like a master and just send serial commands to the Nyboard for it to carry out?? How do most user use the RPi interface, do they program it in python?? I haven't been able to find good links to info about an RPi API for Brittle or a link to info about teh graphical interface can anyone provide more info and links to the need info?? Thanks in advance