This Product Has Been Discontinued, This Page Is For Reference Only.

89.95 USD
$89.95 ea.

The BOB-4 OSD Module lets you put serial text on a video signal or generate a local video signal with text.

Description [Hide]

BOB-4SG is the 4th-generation low-cost video information overlay module. BOB-4SG lets your microcontroller or PC display text and vector graphics on standard TV monitors. With huge user-definable character sets*, BOB-4SG also supports bitmap graphics and multiple languages. BOB-4SG generates background video on-board, or automatically genlocks to your video source and superimposes characters over the image. Printable characters and commands control BOB-4SG through a fast RS-232 style data link, much like a serial printer. BOB-4SG links directly to most microcontrollers. NTSC and PAL video standards are supported in a single hardware version. Field firmware upgrades are supported via PC connection.

Previous versions of the BOB family have relied on 3rd party OSD chips for part of their functionality. These chips were once common in the days of analog video systems (VCR) but have now become obsolete. BOB 4 is a complete custom design that does not rely on 3rd party technologies. This will ensure that the BOB 4 will be a stable platform for quite some time.


  • Simple hookup; requires just 5VDC, serial data, video I/O
  • Immediately prints plain ASCII text in default configuration
  • High display density; up to 480x240 (NTSC) or 480x288 (PAL)
  • Arbitrary custom font sizes and proportional font support
  • Bitmap graphics and vector graphics capability
  • Off-board memory expansion for huge fonts & bitmap graphics
  • Industry-standard ANSI command protocol (ECMA-048)
  • Automatic vertical scrolling
  • Text crawl (single-line smooth horizontal scroll)
  • Mirror-image reverse text display capability
  • VBI (vertical blanking interval) data insertion
  • Async (RS-232 style) and SPI control ports
  • Automatic video mode control (local/genlock)
  • Customer-configurable video standard (NTSC or PAL)
  • Stand-alone operation for video source ID, target reticle, etc.
  • Software-controlled digital logic outputs (5)
  • Analog voltage inputs (two 10-bit ADC channels; BOB-4H only)
  • Consumes only 1/2W at 5VDC
  • Lead-free and nominally RoHS-compliant
  • Designed for maximum production lifetime; no OSD chips!
  • Industrial operating temperature range is standard; -40 to +85C
  • Accurate 75-ohm video terminations and unity gain
  • Handles S-Video (Y/C video) with simple external circuit
  • Firmware can be upgraded in the field via PC connection
  • Independent debug serial port assists in application development

The BOB-4 Conscriptor PC program is provided without charge to assist customers with BOB-4 configuration. See Product Page Resources section. The BOB-4 Conscriptor runs on Windows PCs and offers these conveniences:

  • Font editing, importing, file management
  • Bitmap graphics importing and editing
  • Boot script editing and file management
  • BOB-4SG configuration memory management
  • BOB-4SG firmware upgrade utility
  • One-click BOB-4SG module configuration

Documentation [Hide]

You Might Also Like [Hide]


BOB-4-HGI OSD Module (NTSC & PAL) - 10 units min

The BOB-4-HG is the (header connector version) module for NTSC or PAL video.

$89.95 USD


LK202-25-WB Serial LCD Module

This 20 character by 2 line LCD, comes with an easy to use serial communication interface and has the capability to connect up to a 5 by 5 matrix style keypad.

$44.96 USD


Serial Embedded LCD Backpack

The serial enabled LCD backpack allows you to control a parallel based LCD over a single-wire serial interface.

$16.95 USD


OpenBeam M3 Nuts - 100 Pack

100 pack of M3 nuts for use with OpenBeam.

$3.00 USD


Wonderflex Heat-activated Composite Plastic Sheet

This is a heat-activated, formable polyester plastic sheet that is very popular in making prop armour and other rigid costume pieces.

$61.00 USD


MEAS Vibration Sensor

The MEAS Vibration sensor is flexible and durable.

$2.49 USD


SB400 76 x 48mm, Half-sized Solder Breadboard

This half-sized solder protoboard features power rails arranged on the edges, as you'd find on a standard prototyping board.

$4.99 USD


220 ohm Resistor

5% accuracy 1/4 watt resistors to get you started with your BEAM experiments.

$0.20 USD


240 ohm Resistor

5% accuracy 1/4 watt resistors to get you started with your BEAM experiments.

$0.20 USD


SparkFun Pocket AVR Programmer

This is a simple to use USB AVR programmer. It is low cost, easy to use, works great with AVRDude, and is tested under Windows, Linux, and MacOS X.

$14.95 USD





Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!