Although simple wireless communication involving nodes built of microcontrollers and radio devices from the low end of the price spectrum is quite popular these days. one seldom hears about serious wireless networks built from such devices. Most of the commercially available nodes for ad hoc networking (somewhat inappropriately called "motes") are in fact quite serious computers with ... https://www.roneverhart.com/White-to-Blue-BJJ-Training-2-DVD-Set-with-Pedro-Sauer-Preowned/