After an intense weekend, here is a summary of chat I did.
On my lab work , I advanced on the use of serial over USB. After some unfruitful hours, to try to understand how ChibiOS works, I managed to activate the serial communication over USB. So my card is finally recognized as an USB device. It now remains to me to implement a shell via the advanced functions of ChibiOS, to communicate and control my card easily.
About the Plume project, whereas I was following the work of MarcO and Olivier on the receiving coils , I worked on the transmitting coil. Indeed , we must find a way to power it efficiently and with enough intensity to generate a strong magnetic field. Thus, my present solution is to use an H-bridge for generating a slot signal for energizing the coil. I am trying to think to add a capacitor in series to create a resonant LC system with a high Q. I now need to choose the capacitor.
It also remains to check that this arrangement is viable by testing. After quick tries, we are able to transmit and receive a usable signal on 1m. This is for the weak point, but we think we can improve this value.
So I ‘m planning to re-analyse the razer hydra to understand how the signal is generated. Unfortunately, their PCB is unclear and I can not find documentation about some components.
On the other hand , I began to think about the choice of the components that we will use (alim, charge controller , … )
Finally, with the help of Benjamin , I have started to play with the BLE card and LEDs. 🙂
Good evening .