This book constitutes revised selected papers from the 17th International Symposium on Algorithms and Experiments for Wireless Sensor Networks, ALGOSENSORS 2021, held in Lisbon, Portugal*, in September 2021.The 10 full papers presented in this volume were carefully reviewed and selected from 28 submissions.

Distributed Transformations of Hamiltonian Shapes based on Line Moves.- Stand Up Indulgent Gathering.- Gathering a Euclidean Closed Chain of Robots in Linear- Centralised Connectivity-Preserving Transformations for Programmable Matter: A Minimal Seed Approach.- Distributed coloring and the local structure of unit-disk graphs.-  Evacuating from ell-p Unit Disks in the Wireless Model.- Beep And Sleep: Message and Energy Efficient SetCover.- Byzantine Fault Tolerant Symmetric-Persistent Circle Evacuation.- Overflow Management with Self-Eliminations.- Population protocols with unreliable communication.-

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