Project 33b:
Ada 3315 Triple Expansion Board

     v1.1 Schematic                                          v1.1 Board Layout                                                  v1.1 PCB Top                                 Video of Operation

v1.1 Bill of Materials

Description:

This is a triple expansion board for the Adafruit 3315 2.4" TFT-TS Display (V2).

The 2.4" TFT display is on top of the PCB and a Feather microcontroller like the Feather M4 Express or Feather ESP32 is placed opposite of it on the bottom.

Two Featherwing slots surround the microcontroller slot: perhaps Ultimate GPS and Joy Featherwing or any of the other many Featherwings could be used.

Features:

TFT-TouchScreen is placed on the top of the board using long stacking headers through the PCB to the Feather microcontroller on the other side.

A microcontroller and two expansion boards (Featherwings) are attached to the bottom of the PCB.

Slide dipswitches are placed between the left and right Feather-sized 12-pin and 16-pin connectors; enable only the lines from the central Feather microcontroller/Featherwing TFT-TS connector to the Left or Right expansion connectors.

Each of the expansion connectors as well as the microcontroller connector contain 2 rows of pins in case you wish to jumper your own routes.

Production:

The PCBs that are back from fabrication have been populated and as you can see they are operational.

Below we see the components of Project 9 (Bakk Trakker) installed on the expansion board and working well. Click each for larger images.