It is the Yidaki. An European heard it has a didgeridoo because while the Aborigine was playing the instrument, it was say those words. The yidaki was forgotten and most people knew it as a didgeridoo. There is lots of spellings for the didgeridoo and the is lots of other names for the Yidaki.
There is no one person who made the Didgeridoo it was invented by the ancient Aboriginal people in Australia.
A yidaki is an Australian aboriginal name for the didgeridoo, from the Yolngu word for the instrument.
The indigenous people of Australia, known as the Aboriginal and Torres Strait Islanders, play the didgeridoo.
Didgeridoo
Didgeridoo
Aboriginal people invented the didgeridoo around 20 000 years ago.
The aboriginal people of Australia.
The didgeridoo is a common Aboriginal instrument. It is a hollow stick which is normally painted with ornate ochre patterns. The didgeridoo player blows into the instrument, normally hitting it. This creates a low humming sound.
The didgeridoo is sometimes played as a solo instrument for recreational purposes, though more usually it accompanies dancing and singing in ceremonial rituals. For Aboriginal groups of northern Australia, the didgeridoo is an integral part of ceremonial life, as it accompanies singers and dancers in religious rituals. Source: http://en.wikipedia.org/wiki/Didgeridoo
According to Wikipdidia, the Dreaming Law forbids women from playing the didgeridoo at ceremonies, although Aboriginal women have played the instrument informally.
Anyone can use the didgeridoo. The instrument used to be used traditionally by the Indigenous Australians but had been introduced to people far and wide. I have a friend that plays the didgeridoo and he isn't Aboriginal. So, I hope that has answered part of your question.
The didgeridoo was invented in 1500 by the aborigines