This circuit lets you talk to an XBEE serial port with 5V power and just two signal lines: RX and TX....
Think of it like a shift register for Pulse Width Modulation (PWM)....
Xbee_massage

Wireless Massage

XBEE radio modules, force-sensitive resistors, and vibration motors allow you to give massages over r...
4 Daisy chained CD4021 shift registers gives us 32 inputs....
Use Blender 3D to design a 3D shape and then print it with an Afinia 3D printer. ...
Two LED matrices give 70 LEDs to light up a necklace with messages....
This L293D Stepper motor controller lets you precisely control a stepper motor with just two signal l...
The heartduino is a heart-shaped arduino clone complete with onboard sensors and a 70 pixel LED matri...
Mixing pixels from two face images together....
Control the Heart Matrix LED display wirelessly, using XBEE radio modules....
A library to interface Arduino code with the 3 Axis L3G4200D gyroscope....
This PCB controls a camera and an SD card so you can make automatic time lapse videos. ...
Connecting the MCP79410 real-time clock chip and our Heart Matrix you can show the time with love....
We show how to build a computer lab using Raspberry Pis for under $1000...
Quick tutorial on how we setup a Raspberry PI from scratch....
Connect shift registers together to get more output and input pins from your microcontroller....
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