Mod wheel midi controllers

i have a roland digital 88 key piano as my main keyboard and i dont want another , but it doesnt have a mod wheel , i need a very broke ass cheap alternitive , im looking at the nanokontrol maybe 1 or 2 will they work with renoise if i have my piano plugged in usb at the same time ? and can i map the mod wheels to the sliders ?
and dors anyone know of a cheap mod wheel controller alternitive that i can pick up second hand
reason im asking here is because i cant trt before i buy really thank you guys peace