Originally published at: https://contextualelectronics.com/topic/adding-a-serial-switch-mux-for-changing-control-between-the-ble-and-cell-modules/
In this video, Chris puts down an optional mux for switching signals between the bluetooth chip and the cellular modem. This is because of a perceived need for controlling the cellular modem directly from the Raspberry Pi by certain software customers. Links we discussed in this video: v8 Block Diagram SN74CBTLV3257PWR Some of the topics…