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MegaBitty Nano Line Sensor Board Kit

Very small  dual-sensor board kit designed to fit NanoSumo competition robots (25mm cube) or other small robot.  

This is a miniature dual-sensor board kit designed to fit Nano Sumo competition robots; where size is restricted (to 25mm cube) or other small robot. This uses the same circuit as the Micro Line Sensor Board Kit but with smaller parts and no indicator LEDs. 

Benefits & Features

  1. Dual-sensor line detector 
  2. Only 24mm (0.95") x 7mm (0.275") x 0.10" thick (Perfect for NanoSumos!) 
  3. Range of ~1-5mm 
  4. Each IR photodetector measures surface reflectivity to distinguish dark and light surfaces 
  5. Analog output per sensor reads less than 1V for distances of ~1-5mm from a white surface, and quickly ramps up to ~5V beyond 5mm. Also reads ~5V for a black surface. 
  6. Outputs compatible with digital inputs of most microcontrollers and other logic devices. (Use with the MegaBitty's interrupt inputs for quick response to surface color transitions!) 
  7. 5V operation

Two small infrared photo-reflectors are used to measure surface reflectivity. Analog output reads less than 1V for distances of ~1-5mm from a white surface, and quickly ramps up to ~5V beyond 5mm, or for a black surface. Sensor outputs can be hooked directly to the interrupt input pins of the MegaBitty and other Microcontrollers or can be used with an ADC. Only 0.95" x 0.275" x 0.10" thick. Assembly required.

Assembly Instructions

Nano Line Sensor Assembly Instructions

This is a kit, requiring assembly of extremely small surface-mount components. Advanced soldering skills and good soldering equipment required.

Designator Distributor Dist. Part No. Description
C1 DigiKey 399-3027-1-ND CAP .10UF 10V CERAMIC X5R 0402
C2 DigiKey 399-3027-1-ND CAP .10UF 10V CERAMIC X5R 0402
Q1 Mouser 512-MMBT3904 SOT-23 SOT-23 NPN GEN PUR
Q2 Mouser 512-MMBT3904 SOT-23 SOT-23 NPN GEN PUR
R1 DigiKey P10KJCT-ND RES 10K OHM 1/16W 5% 0402 SMD
R2 DigiKey P180JCT-ND RES 180 OHM 1/16W 5% 0402 SMD
R3 DigiKey P1.0KJCT-ND RES 1.0K OHM 1/16W 5% 0402 SMD
R4 DigiKey P1.0KJCT-ND RES 1.0K OHM 1/16W 5% 0402 SMD
R5 DigiKey P10KJCT-ND RES 10K OHM 1/16W 5% 0402 SMD
U1 DigiKey 425-1096-5-ND PHOTOINTERRUPTER REFLEC 6.5MM PC
U2 DigiKey 425-1096-5-ND PHOTOINTERRUPTER REFLEC 6.5MM PC

 

 

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Last updated: May 04, 2008.