Sudo make me a sandwich meaning7/31/2023 ![]() Snap the uFL antenna onto the uFL connector on the FONA. If you want, you could also use a 3v3 line on the Raspberry Pi. Solder Vio on the FONA to bat, also on the FONA. Solder RX on the FONA to pin 8 (TX) on the PiTFT. Connect TX on the FONA to pin 10 (RX) on the PiTFT. Connect the "RI" (Ring indicator) pin on the Adafruit FONA to pin 7 (GPIO 4) on the PiTFT. Solder the black wire on the electret microphone to the Mic - pin on the FONA. Solder the red wire on the electret microphone to the Mic + pin on the FONA. Lets get started.Solder the 8 ohm speaker to "spk +" and "spk -" on the FONA. Step 4 Finish Wiring Now that power connection are done, we can continue on to wiring up the UART to the Raspberry Pi, the speakers, and the microphone. 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. 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. Most likely, no LEDs will illuminate on the FONA. Otherwise, it will just stay solid white, which is just fine for now. If you have a PiTFT image on your Pi's SD card the screen should also boot up. If you slide the slide switch the LEDs on the Power Boost should illuminate and the Raspberry Pi should power up. THE PI IS ALREADY BEING POWERED BY THE LITHIUM ION BATTERY (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. Solder a wire from the "KEY" pin on the FONA to Pin 40 (GPIO 21) on the Raspberry Pi. Solder a wire from the middle terminal of your slide switch to the "EN" pin (Enable) on the Power Boost. 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 GND on the power boost to one terminal on a slide switch. Solder a wire from GND on the FONA to GND on the Power Boost. 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. Instead of connecting to the Raspberry Pi, connect your wires to the 26 pin male header on the PiTFT. In the Fritzing diagram, there is a Raspberry Pi. ![]() Step 3 Wire the Power Circuit Now lets start wiring everything together. If you would like more 3D printed projects from me, please vote for the tyfone in the 3D Printing contest. ![]() I myself paid a company to do the 3D printing for me because I do not have the funds to buy one myself. If you would like to customize the case to suit your needs, download the Solidworks files from my Github page. If you do not have access to a 3D printer, you can pay a company like Shapeways to do it for you. Step 2 3D Print the Enclosure The smartphone consists of two 3D printed parts that make up the enclosure: The top and the bottom. While waiting for your parts to ship, you can 3D print the enclosure. You will need the following electronic components and PCBs:Raspberry Pi A+ 256MBAdafruit FONA uFL Version3.5in PiTFT AssembledRaspberry Pi Camera 5MPPowerboost 500 BasicGSM Antenna 1W 8 ohm Metal SpeakerUSB Wifi AdapterElectret Microphone 1200mah Lithium Ion Battery4-40 x 3/8in screws M2.5 x 5mm screws M2.5 x 20mm screws M2 x 5mm screws Slide SwitchWire Step 1 Gather Materials Before we begin, lets gather the components required for the build. Lots of time and patience Add TipAsk QuestionCommentDownload ![]() Skills Required:Basic Soldering Familiarity with the Raspberry Pi You can learn more about this project at hackaday.io/project/5083 You will start by 3D printing a case, then soldering printed circuit boards together, assembly, and finally installing a mobile OS onto your phone and using Python to make it yours. More About Mach_5 » This tutorial brings you from start to finish in constructing your very own smartphone. Introduction Build Your Own Smartphone By Mach_5Tyler SpadgenskeFollow More by the author: About: Engineering student at NDSU, entrepreneur and inventor. Build Your Own Smartphone : 10 Steps (with Pictures) - Instructables Following instructablescircuitsProjectsContests Enter search termīuild Your Own Smartphone By Mach_5 in CircuitsRaspberry Pi 627,444
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