Lately our mood turned into a quick live setup in the middle of the BBQ area with self-built devices: 4 split-stereo channels transmitted by 4 raspberry pi radio transmitters, received on 8 portable radios, mobile phones, tablets, ... It is all working easily on usb-batteries with(out) a solar panel. A piece for green low voltage power and live musicians: let's go to Tempelhof and just play it! But how how how?

SDR = software defined radio

https://howtoraspberrypi.com/create-radio-transmitter-raspberry-pi/

https://www.raspberrypi.org/magpi/raspberry-pi-fm-transmitter/

https://www.rtl-sdr.com/transmitting-fm-am-ssb-sstv-and-fsq-with-just-a-raspberry-pi/

https://www.rtl-sdr.com/building-a-ham-tranceiver-with-an-rtl-sdr-raspberry-pi-and-rpitx/

https://www.rtl-sdr.com/pitx-qrp-tx-shiled-for-wspr-on-20m-now-for-sale/

https://www.tapr.org/kits_20M-wspr-pi.html

https://gerolfziegenhain.wordpress.com/2013/04/13/raspi-as-wspr-transmitter/

https://github.com/JamesP6000/WsprryPi

https://docs.google.com/document/d/1bLKEDmJvKQegqUwDXEy3V7wQTqupIfyg2LkN0dOuPY4/edit

https://qrp-labs.com/

https://www.rtl-sdr.com/raspberry-pirate-radio-fm-transmitter/

https://www.rtl-sdr.com/transmitting-datv-with-a-raspberry-pi/

http://rfsparkling.com/qrpi/

http://www.pabr.org/radio/leandvb/leandvb.en.html

https://www.rtl-sdr.com/a-pocket-datv-transmitter-and-receiver-with-raspberry-pi-limesdr-mini-and-rtl-sdr/

https://www.rtl-sdr.com/transmitting-dvbt-hdtv-raspberry-pi-rtl2832u/

Vitrine Interactives

Raspberry Pi 2 or 3 with some sensors

BME680 = temperature, pressure, humidity, air quality sensor

PM2.5 Air Quality Sensor

enviro pHAT

mpr121 capacitive/touch sensor (12)

software: python, puredata

lcd displej and a bluetooth reproduktor

Walking Synthesis

Teensy + Prop shield (6DOF + 2 watt amp)

all weather speaker 2-4 watt

the megaphones (sd-card, record/loop, voice, aux)