Stats
Time: 2 hoursCost: $95Difficulty: Medium
Tools
Soldering ironPliersWire cutter
Materials
All materials can be ordered from SparkFun Electronics.
Arduino Pro Mini 328 – 3.3V/8 MHz (DEV-11114)PIR motion sensor (SEN-08630)Hookup wire (PRT-08022)Two 1K resistors (COM-08980)Humidity and temperature sensor – RHT03 (SEN-10167)5V Step-Up Breakout – NCP1402 (PRT-10968)LiPo Charger Basic – Micro-USB (PRT-10217)Ambient Light Sensor Breakout – TEMT6000 (BOB-08688)MEMS Microphone Breakout – INMP401 (BOB-09868)Micro OLED Breakout (LCD-13003)Polymer Lithium-Ion Battery – 1,000 mAh (PRT-00339)Pi Tin for the Raspberry Pi – White (PRT-11979)
Instructions
This article originally appeared in the August 2015 issue of Popular Science, under the title “If Your Walls Could Talk…”