Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

iot

Testing connected firmware and back ends under loss, latency and outages on your own computer

taught

Taught in

Testing under bad networks
Connected Devices and the Internet of Things

Requires

idempotent-message-handling required

Required by

Writing a device test plan covering function, environment and radio required

Local knowledge map

Local knowledge map

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Solid arrows are required prerequisites; dashed are recommended or helpful. Lower rows are more foundational. Click any box to jump to that concept.