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.