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                                    Fig. 4.5 A microcontroller, the Raspberry Pi PicoSource: D. Bou%u00ebvin for Nemeton, CC BY 4.0Fig. 4.6 The Lichen Pollution Sensor deviceSource: D. Bou%u00ebvin for Nemeton, CC BY 4.01654.1 Lichen Pollution Sensor
                                
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