Circuit Diagram

Wired Connections

The diagram above depicts the connections for the PowerBoost 1000C, audio amp, PiTFT, rotary switch, LED and Pi. Use this as a reference for wiring the components. Note, the length of wires and position of components are not exactly how the circuit will be - it’s just a diagram to show connections.

The 3.5" PiTFT connects to the Raspberry Pi's GPIO header. The rotary switch, LED and PowerBoost connect to the GPIO breakout on the 3.5" PiTFT.

LED Wiring

The LED is wired to Pin 1 and 9 on the PiTFT.

Pin 1

3.3V

Positive

Pin 9

GND

Negative

Rotary Switch

The rotary switch is connected to various pins on the PiTFT. The table below lists out the pin number and GPIO. The colors correspond with the wires in the diagram - these however, can be whatever color you want.

Pin 14

GND

White

Pin 7

GPIO 4

Green

Pin 11

GPIO 17

Blue

Pin 13

GPIO 27

Purple

Pin 15

GPIO 22

Yellow

Pin 16

GPIO 23

Brown

Raspberry Pi GPIO

Below is a color-coded graphic of the Raspberry Pi GPIO. It has the pin number, GPIO number and pin type listed. It great for referencing the wired connections.

This guide was first published on Feb 04, 2016. It was last updated on Feb 04, 2016. This page (Circuit Diagram) was last updated on Oct 21, 2019.