A team in Colombia is to test a ventilator made with a Raspberry Pi computer and easy-to-source parts.
The design and computer code were posted online in March by a man in California, who had no prior experience at creating medical equipment.
Marco Mascorro, a robotics engineer, said he built the ventilator because knew the machines were in high demand to treat Covid-19.
His post prompted a flood of feedback from healthcare workers.
He has used the advice to make improvements.
“I am a true believer that technology can solve a lot of the problems we have right now specifically in this pandemic,” he told the BBC.
The Colombian team said the design was important for their South American country because parts for traditional models could be hard to obtain.