Now lets start wiring everything together. In the Fritzing diagram, there is a Raspberry Pi. Instead of connecting to the Raspberry Pi, connect your wires to the 26 pin male header on the PiTFT. Now that we have that out of the way, lets start making connections.

Connect "bat" on the Adafruit FONA to "bat" on the Power Boost. Solder a wire from GND on the FONA to GND on the Power Boost. Solder a wire from GND on the power boost to one terminal on a slide switch. Also connect the GND pin on the power boost to a ground pin on the PiTFT (Same Pinout as the first 26 pins on a Raspberry Pi, notice the arrow and "1" indicating pin 1, which is 3v3) Connect the 5V line on the Power Boost to a 5v pin on your PiTFT. Solder a wire from the middle terminal of your slide switch to the "EN" pin (Enable) on the Power Boost. Solder a wire from the "KEY" pin on the FONA to Pin 40 (GPIO 21) on the Raspberry Pi. (Changed on commit acd5c08) Place the PiTFT over your Raspberry Pi A+ Double check your connections

WHILE TESTING, MAKE SURE YOU DO NOT PLUG IN A 5V MICRO USB. THE PI IS ALREADY BEING POWERED BY THE LITHIUM ION BATTERY

If you slide the slide switch the LEDs on the Power Boost should illuminate and the Raspberry Pi should power up. The PiTFT backlight should also turn on. If you have a PiTFT image on your Pi's SD card the screen should also boot up. Otherwise, it will just stay solid white, which is just fine for now. Most likely, no LEDs will illuminate on the FONA. To turn on the FONA, hold in the Key button on the device for two seconds or pull GPIO 18 on the Raspberry Pi high for two seconds. If you can power the Pi, TFT, and FONA from the battery and turn it all off from a switch, you are ready for the next step.