Basics
For a basic no-UI Radiodan you probably want:
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microSD cards
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some way of writing the microSD cards
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Raspberry Pi 3
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Micro USB (data + power)
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PhatDAC or a good USB sound card
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3.5mm lead
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Power supply (I just use any 2.1A USB adapter I have lying around and it works well)
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Ethernet patch cable
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USB ethernet adapter
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Pi Zero W for smaller projects
For the PhatDAC:
- Solder-free header: https://shop.pimoroni.com/products/gpio-hammer-header or:
- Soldering iron
- Solder
Other audio stuff
USB Microphone for voice or recording
I think USB is good as it's plug-and-play and doesn't use up any GPIO pins
- Cheap, small
- I bought this one with a lead
- There are some HAT-ones that are specifically for wide field
Physical UI prototyping - inputs
- Jumper wires
- Female-Female is good for connecting things directly to the Pi without needing a breadboard
- Female-Male if you use a breadboard
- Buttons: kind-of big Mini Arcade ones, small clicky ones (you need both the cap and the switch
- Electric paint or copper tape
- Capacitive touch: Bare Conductive have written a library with example code for the MPR121 that ships with Raspbian so that's the one to use I think
- RFID
- Breadboards
- MPU accelerometer for gestures
UI outputs
- LEDs/resistors
- Microservo for making things move