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red_v

The SparkFun RED-V RedBoard is a low-cost, development board featuring the Freedom E310 SoC which brings with it the RISC-V instruction set architecture (ISA).

redstick

Spawned from the BadgerStick for storefront production

resistance_combinator_calculator

rf_links

These wireless transmitters and receivers easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link.

rf_transceiver_breakout-rfm22b

SparkFun RF Transceiver Breakout - RFM22B-S2 (434 MHz)

rfid_evaluation_shield

Example code and board files for RFID Evaluation Shield

rfid_reader_breakout

Breakout for ID Innovations RFID reader modules.

rfid_usb_reader

SparkFun RFID USB Reader, created by and available from SparkFun Electronics

rfm22_shield-434mhz

SparkFun RFM22 Shield - 434MHz

rfm69hcw_breakout

A breakout board for HopeRF's RFM69HCW wireless data transceiver

rht03

RHT03 Humidity and temperature sensor

rj11_breakout

Breakout board for common telephone connector and cable. Handy for I2C connections.

rj45_breakout

SparkFun RJ45 Breakout Board, available from SparkFun Electronics

rn-52

Breakout board for the RN-52 Audio Bluetooth module from Roving Networks .

rogue_router

Solar Access Point Fileserver for Sparkfun Thing

rootooth

Bluetooth Roomba connector, available from SparkFun Electronics

roshamglo

Giveaway rock, paper, scissors laser tag badge.

rotary_encoder_breakout-illuminated

This is a clever little breakout board for both the RGB and R/G illuminated rotary encoders.

rotary_switch_breakout

Breadboard-friendly breakout for 1x10 rotary switch, available from SparkFun Electronics

rotary_switch_potentiometer

Small PCB for rotary switch and a few resistors, to make a custom-taper stepped potentiometer

rover5_motor_driver_board

4 Motor Controller Arduino Library for Rover 5 platform.

rp2040_mikrobus_dev_board

rpi_pantilt_camera_kit

Example code for the the SparkFun Raspberry Pi Zero Pan Tilt Camera Kit.

rs-485_breakout

SparkFun Transceiver RS-485 Breakout

rs232_shifter

SMD No DB9 Connector, available from SparkFun Electronics

rs232_shifter_smd

SMD with DB9 Connector, available from SparkFun Electronics

rtc-module

DS1307 Real Time Clock Module

run-spot-run

Breakout board and example code to control the SPOT Connect Geolocator

samd21_dev_breakout

An Arduino shield-compatible breakout board for the ATSAMD21G18. Battery-power enabled, with an onboard LiPo charger.

samd21_mini_breakout

A miniature SAM21G Breakout, in the form factor/pin-out of a Pro Mini.