The 7-Segment daughterboard modules each provide four digits of LED display, including some alphabetic and punctuation capability. The master module, 7-Segment DB(Master) (#28312), plugs directly into a Parallax motherboard, such as the MoBoStamp-pe (#28300). With the master module installed, up to seven additional slave modules, 7-Segment DB(Slave) (#28313), can be added, daisy-chain-style, for a total of 32 contiguously-displayed digits. With the downloadable AVR driver firmware, any PBASIC program written for the MoBoStamp-pe gains high-level control over the functions of the 7-Segment DB, without having to worry about display refresh, segment encoding, and the like. Writing to the display is as easy as sending it a string. In addition, you also have several special effects at your disposal, including dimming, vertical and horizontal scrolling, fixed-width numerical fields with leading zero suppression, and selectable display windows. When combined with Parallax's (upcoming) aluminum extrusions - designed especially for the MoBoStamp-pe and its daughterboards - it will be easy to produce a finished-looking controller and display device you can be proud of.
Features:
- Displays up to four digits (alphanumeric characters)
- Daisy-chainable for up to one master and seven slaves (32 digits total)
- Includes shift registers for refresh with 25% duty cycle
- Includes a dimming input for PWM control of overall intensity
- Compatible with future daisy-chainable I/O devices
- Downloadable AVR firmware handles refresh, character display, and special effects automatically
- Downloadable PC program for creating your own character sets
- Compatible with both 3.3V and 5V Vdd installations
Example Applications
- Annunciators.
- Visual Sensor Feedback.
- Desktop weather stations.
- Debugging output.
Key Specifications:
- Power requirements: 3.3 to 5 VDC
- Communication: 1-Wire Serial (asynchronous serial)
- Dimensions: 1.37 x 1.37 x 1.18 in (35 x 35 x 30 mm)
- Operating temp range: -32 to +158 °F (-0 to +70 °C)
Downloads & Resources:
BASIC Stamp MOBO Family Overview
7Seg-DB_doc (.pdf)
AVR_7Seg1_doc (.pdf) (.pdf)
7SegFont Software (.exe)
7Seg1HEX (.zip)
Right Marquee
Odometer (.zip)
Application (.zip)
Application Video (.zip)