Interface Converters

SparkFun Logic Level Converter Bi-Directional
1066-9941412

USB-A to micro-A OTG Cable (great for Raspberry Pi Zero)
2005-9961125

SparkFun FTDI Basic Breakout Board (3.3V)
0342-0800102

9Pin DB9 Solderless Terminal RS232 RS485 Adapter Connector - Female
2133-9923111

GPIO T-Cobbler Breakout For Raspberry Pi Model 2 B, B+ and A+ (40-pin)
1349-7813021

Adafruit 12-Bit ADC (4 Channel with Programmable Gain Amplifier ADS1015)
1142-9941141

Micro SD Card Reader Breakout
2077-0100313

USB to UART TTL Serial Cable (PL2303HX Compatible)
1746-7813033

GPIO Ribbon Cable for Raspberry Pi 3 B, B+, 2 B, B+ and A+ (40-pins 20cm)
1353-9932661

SparkFun Xbee Explorer Regulated
0356-9941151

Adafruit FT232H Breakout - General Purpose USB to GPIO+SPI+I2C
2323-0100405

SparkFun CAN-BUS Shield
2266-1200101

Micro SD Card Reader - USB 2.0
2231-9923173

MAX3232 RS232 to TTL Converter Module
2135-9923113

9Pin DB9 Solderless Terminal RS232 RS485 Adapter Connector - Male
2134-9923112

SD Card Reader Breakout
2076-1200102

ELM327 OBD2 Car Diagnostics Bluetooth Adapter (v2.1)
1875-7812075

SparkFun USB Type A Female Breakout
1483-0600232

SparkFun Tiny AVR Programmer
1360-1000105

Adafruit 12-Bit DAC Breakout Board using I2C Interface (MCP4725)
1110-9941143

SparkFun Breakout Board for USB micro-B
1095-0800106

FTDI Cable (5V)
0624-7810105

SparkFun Breakout Board for USB mini-B
0543-0800107

SparkFun MicroView - USB Programmer
2418-0300314