Features:

• sensor adopts TCRT5000, high sensitivity
• sensitivity adjustable digital potentiometer to adjust (blue)
• modules can induction block from 0 to 3 cm
• working voltage 3.3 V to 5V
• a output form output analog voltage (0 to 5 v)
• digital switch output (0 and 1)
• has a fixed bolt hole, convenient installation
• small board PCB size: 3.2 cm * 1.4 cm
• power indicator light (red) and digital switch output indicator light (green)
• comparator USES the LM393 chips, work stability
• detection reflection distance: 1mm to 25mm
• comparator output, signal waveform, driving ability is strong, for more than 15ma

Three small plate interface specifications wire (4)

1. VCC external 3.3 V to 5 V
2. GND external GND
3. DO small plate digital output interface (0 and 1)
4. small AO plate analog output interface (0 to 5 v)

Four instructions

1. module can be used to intelligent tracing car obstacle avoidance, material testing, color detection
2. modules in shining or keep out the distance is greater than the set threshold the DO output high level, when the module block distance is less than the setting threshold, module D0 output low level;
3. small plate digital output D0 can be attached directly to the microcontroller, through single chip microcomputer to detect the high and low level, thus to detect whether the modules are triggered;
4. small plate digital output DO can directly drive our relay module, which can be composed of a photoelectric switch;
5. small plate analog output can AO and AD modules are linked together, through the AD conversion, can module are obtained and the obstructions of distance.