I have used the following small gears for my EWI playing and instrument modification. They are very useful. I like to introduce them here.
CV.OCD MIDI to CV converter https://six4pix.net/product/cvocd/
- smooth conversion from midi breath cc 2 to CV. It is better than Doepfer dark link
- I use this one between EWI/NuRad and Roland SE-0hospital
2. USB HOST MIDI ROUTER - UHMR https://compasflamenco.com/midi-c-3/usb-host-midi-router-uhmr-p-8.html
- merge multiple USB controllers into one midi output. You can connect multiple USB midi instruments via USB hub and then connect that into this small device. Magic happens.
- Thanks to this, I was able to make an augmented EWI-USB.
3. CME WIDI HOST, WIDI Master wireless bluetooth midi transmitter https://www.cme-pro.com/widi-master/
- low latency. very handy, portable, easy to use
- WIDI HOST can send midi signal from a single USB midi controller
- WIDI Master can send and receive midi signal from each other.
4. iPhone to USB Camera Adapter, 6 in 1 USB OTG Adapter for iPhone/iPad,3 USB+SD Card Reader+TF Card Reader+Charging Port,Support Newest iOS 15 https://www.amazon.com/USB-Adapter-OTG-Charging-Support/dp/B09H2GRRCS/ref=pd_lpo_3?pd_rd_i=B09H2GRRCS&th=1#:~:text=ImmersiveView-,iPhone%20to%20USB%20Camera%20Adapter%2C%206%20in%201%20USB%20OTG%20Adapter%20for%20iPhone/iPad%2C3%20USB%2BSD%20Card%20Reader%2BTF%20Card%20Reader%2BCharging%20Port%2CSupport%20Newest%20iOS%2015,-Style%3A3*USB
- For IOS musician, this tool gives extra usb inputs which can be used for connection with USB midi controller/instruments. With this, you don't need external powered USB hub.
5. 88.8Wh|65Watts Portable Laptop Charger with AC Outlet https://www.amazon.com/gp/product/B07P87JTVT/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
You can make any synth portable as this one provide AC power. You can connect the synthesizer's power supply cable here. You don't need a ripcord. I use it for Roland SE-02 and Dynsample XpressO as the ripcord cannot provide enough power for these synths.