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 | PJRC Teensy USB Board, Version 3.2 $24.75 The Teensy USB Development Board is a complete USB-based microcontoller development system. |
 | Bracket Pair for Sharp Distance Sensors – Parallel $4.20 Bracket Pair for Sharp GP2Y0A02, GP2Y0A21, and GP2Y0A41 Distance Sensors – Parallel |
 | Bracket Pair for Sharp Distance Sensors – Multi-option $4.85 Bracket Pair for Sharp GP2Y0A02, GP2Y0A21, and GP2Y0A41 Distance Sensors – Multi-Option |
 | Synapse RF220UF1 $30.00 Better than XBee at a comparable cost! This module features the powerful ATmega128RFA1, transmitting on 2.4GHz with OTA (Over-The-Air) speeds up to 2Mbps, maximum 4.8km (3 miles) range and switchable internal /external antenna. |
 | Grove – 4 pin Female Jumper to Grove 4 pin Conversion Cable (5 PCs per Pack) $4.95 4 Pin jumper wire for easy Grove-to-Arduino connections. |