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Parallax 28317 TSL1401 Linescan Sensor Daughterboard
The Parallax 28317 TSL1401 Linescan Sensor Daughterboard is a high-precision linear image sensor module designed for capturing one-dimensional pixel arrays with 128 photodiodes arranged in a single row, enabling real-time line scanning applications. Professional developers, roboticists, and embedded systems engineers utilize this daughterboard for machine vision projects, barcode reading systems, and optical inspection applications where fast sequential image data acquisition is critical. This sensor solves the challenge of capturing linear motion data and edge detection in resource-constrained environments by providing direct parallel output to microcontroller platforms like Parallax Propeller and Arduino-compatible boards.
Product Overview
The TSL1401 linescan sensor operates on the principle of photodiode array sensing, where each of the 128 individual photodiodes generates a current proportional to incident light intensity. The daughterboard integrates the TSL1401 sensor IC with supporting analog conditioning circuitry, clock signal generation, and output buffering to deliver clean analog video data. The sensor employs a rolling shutter mechanism with integrated timing control, allowing sequential readout of pixel values at high speeds up to 2 microseconds per pixel, making it ideal for applications requiring real-time visual feedback at frame rates exceeding 500 Hz.
This daughterboard design eliminates the complexity of discrete component integration by providing a ready-to-use module with standardized pinout compatible with Parallax development platforms. The sensor features an 8-bit analog output that can be directly interfaced with analog-to-digital converters or high-speed ADC channels on modern microcontrollers. The compact form factor and minimal power consumption (approximately 5mA at 5V operation) make it suitable for mobile robotics, autonomous vehicles, and portable inspection equipment where power efficiency and space constraints are primary design considerations.
Key Specifications
| Specification | Details |
| Product Type | Linear Image Sensor Daughterboard Module |
| Brand | Parallax Inc. |
| Sensor IC | TSL1401 128-Element Linear Photodiode Array |
| Pixel Count | 128 photodiodes in single row configuration |
| Pixel Size | 63.5 micrometers |
| Output Type | Analog video output 8-bit resolution |
| Clock Speed | 2 microseconds per pixel minimum |
| Operating Voltage | 5V DC single supply |
| Power Consumption | Approximately 5mA at 5V |
| Field of View | Approximately 36.5 degrees with standard optics |
| Output Format | Analog composite video signal |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
Key Features
- 128-Element Linear Photodiode Array with 63.5-micrometer pixel spacing for high spatial resolution line scanning applications
- Integrated Timing and Control Circuitry eliminating need for external clock generation, reducing component count and design complexity
- Fast Pixel Readout at 2 microseconds per pixel enabling real-time processing at over 500 frames per second for dynamic motion tracking
- Single 5V Supply Operation with minimal current draw of 5mA, ideal for battery-powered robotics and portable inspection systems
- Direct Analog Output compatible with standard ADC channels on Parallax Propeller and Arduino microcontroller platforms
- Compact Daughterboard Form Factor with standardized pinout for seamless integration into existing development ecosystems
Applications and Use Cases
- Autonomous Robot Line Following and Edge Detection using the linear sensor array to track dark lines on light surfaces with millisecond response times
- Barcode and QR Code Reading Systems where the 128-pixel resolution captures encoded patterns for inventory management and retail applications
- Optical Inspection and Quality Control on manufacturing assembly lines detecting defects, surface irregularities, and dimensional variations in real-time
- Document Scanning and OCR Applications capturing linear image data for portable document readers and accessibility devices
- Motion Tracking and Velocity Measurement in robotics applications using pixel displacement analysis across consecutive frames
- Color Sorting and Material Identification systems analyzing spectral intensity variations across the linear pixel array
How to Use
To implement the Parallax 28317 TSL1401 Linescan Sensor Daughterboard, first establish electrical connections by connecting the 5V power supply to the VDD pin, ground to VSS, and the analog output signal to your microcontroller's ADC input channel. Configure your microcontroller's SPI or parallel interface to generate the required clock signal (CLK) and integration control signals (SI) that synchronize pixel readout timing. The sensor requires an integration period typically between 10 to 100 microseconds before initiating pixel readout, during which photodiodes accumulate light charge proportional to incident illumination.
Implement a software routine that generates the SI (start integration) pulse to initiate the readout cycle, then clock out 128 consecutive pixels by toggling the CLK signal while sampling the analog output at each clock edge. Most users implement this with interrupt-driven ADC sampling or DMA transfers to capture the complete 128-pixel line in under 300 microseconds. Apply appropriate optical focusing using a standard camera lens or pinhole aperture mounted in front of the sensor to achieve desired field of view and depth of field characteristics for your specific application. Calibrate the ADC readings by capturing dark reference images (sensor covered) and bright reference images to establish baseline thresholds for edge detection and feature recognition algorithms.
Frequently Asked Questions
What is the maximum clock frequency for pixel readout?
The TSL1401 sensor supports a minimum of 2 microseconds per pixel, which corresponds to a maximum clock frequency of approximately 500 kHz. This allows complete readout of all 128 pixels in approximately 256 microseconds. Higher clock speeds may result in reduced signal quality and increased noise, so most applications operate between 250 kHz to 400 kHz for optimal signal-to-noise ratio.
Can I interface this sensor directly to Arduino without additional ADC?
Yes, the Parallax 28317 outputs an analog composite video signal that connects directly to Arduino's analog input pins (A0-A5). However, for optimal performance and faster sampling rates, external high-speed ADC modules like the ADS1115 or MCP3208 are recommended to achieve the full 500+ frames per second capability. The Arduino's built-in ADC operates at approximately 10 kHz, which limits frame rate to around 78 Hz per complete line scan.
What optical components do I need for focusing?
The sensor requires a simple camera lens assembly with focal length typically between 6mm to 25mm depending on your desired field of view and working distance. Standard M12 camera lens mounts are compatible with most Parallax sensor modules. For applications requiring fixed focus at specific distances, a simple plastic lens with aperture stop provides adequate performance. Ensure the lens focuses the linear scene onto the 128-pixel array without vignetting or distortion.
How do I implement edge detection with this sensor?
Edge detection is performed by analyzing the gradient of pixel intensity values across the 128-element array. Implement a derivative filter by calculating the difference between adjacent pixel values: edge_strength = abs(pixel[n+1] - pixel[n]). Peaks in this derivative signal indicate sharp transitions between light and dark regions. Apply hysteresis thresholding to distinguish genuine edges from noise, and use centroid calculation on the edge strength profile to determine precise edge location with sub-pixel accuracy.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Parallax 28317 TSL1401 Linescan Sensor Daughterboard Online in India
Purchase the Parallax 28317 TSL1401 Linescan Sensor Daughterboard online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Parallax 28317 TSL1401 Linescan Sensor Daughterboard with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.
Parallax 28317 TSL1401 Linescan Sensor Daughterboard
The Parallax 28317 TSL1401 Linescan Sensor Daughterboard is a high-precision linear image sensor module designed for capturing one-dimensional pixel arrays with 128 photodiodes arranged in a single row, enabling real-time line scanning applications. Professional developers, roboticists, and embedded systems engineers utilize this daughterboard for machine vision projects, barcode reading systems, and optical inspection applications where fast sequential image data acquisition is critical. This sensor solves the challenge of capturing linear motion data and edge detection in resource-constrained environments by providing direct parallel output to microcontroller platforms like Parallax Propeller and Arduino-compatible boards.
Product Overview
The TSL1401 linescan sensor operates on the principle of photodiode array sensing, where each of the 128 individual photodiodes generates a current proportional to incident light intensity. The daughterboard integrates the TSL1401 sensor IC with supporting analog conditioning circuitry, clock signal generation, and output buffering to deliver clean analog video data. The sensor employs a rolling shutter mechanism with integrated timing control, allowing sequential readout of pixel values at high speeds up to 2 microseconds per pixel, making it ideal for applications requiring real-time visual feedback at frame rates exceeding 500 Hz.
This daughterboard design eliminates the complexity of discrete component integration by providing a ready-to-use module with standardized pinout compatible with Parallax development platforms. The sensor features an 8-bit analog output that can be directly interfaced with analog-to-digital converters or high-speed ADC channels on modern microcontrollers. The compact form factor and minimal power consumption (approximately 5mA at 5V operation) make it suitable for mobile robotics, autonomous vehicles, and portable inspection equipment where power efficiency and space constraints are primary design considerations.
Key Specifications
| Specification | Details |
| Product Type | Linear Image Sensor Daughterboard Module |
| Brand | Parallax Inc. |
| Sensor IC | TSL1401 128-Element Linear Photodiode Array |
| Pixel Count | 128 photodiodes in single row configuration |
| Pixel Size | 63.5 micrometers |
| Output Type | Analog video output 8-bit resolution |
| Clock Speed | 2 microseconds per pixel minimum |
| Operating Voltage | 5V DC single supply |
| Power Consumption | Approximately 5mA at 5V |
| Field of View | Approximately 36.5 degrees with standard optics |
| Output Format | Analog composite video signal |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
Key Features
- 128-Element Linear Photodiode Array with 63.5-micrometer pixel spacing for high spatial resolution line scanning applications
- Integrated Timing and Control Circuitry eliminating need for external clock generation, reducing component count and design complexity
- Fast Pixel Readout at 2 microseconds per pixel enabling real-time processing at over 500 frames per second for dynamic motion tracking
- Single 5V Supply Operation with minimal current draw of 5mA, ideal for battery-powered robotics and portable inspection systems
- Direct Analog Output compatible with standard ADC channels on Parallax Propeller and Arduino microcontroller platforms
- Compact Daughterboard Form Factor with standardized pinout for seamless integration into existing development ecosystems
Applications and Use Cases
- Autonomous Robot Line Following and Edge Detection using the linear sensor array to track dark lines on light surfaces with millisecond response times
- Barcode and QR Code Reading Systems where the 128-pixel resolution captures encoded patterns for inventory management and retail applications
- Optical Inspection and Quality Control on manufacturing assembly lines detecting defects, surface irregularities, and dimensional variations in real-time
- Document Scanning and OCR Applications capturing linear image data for portable document readers and accessibility devices
- Motion Tracking and Velocity Measurement in robotics applications using pixel displacement analysis across consecutive frames
- Color Sorting and Material Identification systems analyzing spectral intensity variations across the linear pixel array
How to Use
To implement the Parallax 28317 TSL1401 Linescan Sensor Daughterboard, first establish electrical connections by connecting the 5V power supply to the VDD pin, ground to VSS, and the analog output signal to your microcontroller's ADC input channel. Configure your microcontroller's SPI or parallel interface to generate the required clock signal (CLK) and integration control signals (SI) that synchronize pixel readout timing. The sensor requires an integration period typically between 10 to 100 microseconds before initiating pixel readout, during which photodiodes accumulate light charge proportional to incident illumination.
Implement a software routine that generates the SI (start integration) pulse to initiate the readout cycle, then clock out 128 consecutive pixels by toggling the CLK signal while sampling the analog output at each clock edge. Most users implement this with interrupt-driven ADC sampling or DMA transfers to capture the complete 128-pixel line in under 300 microseconds. Apply appropriate optical focusing using a standard camera lens or pinhole aperture mounted in front of the sensor to achieve desired field of view and depth of field characteristics for your specific application. Calibrate the ADC readings by capturing dark reference images (sensor covered) and bright reference images to establish baseline thresholds for edge detection and feature recognition algorithms.
Frequently Asked Questions
What is the maximum clock frequency for pixel readout?
The TSL1401 sensor supports a minimum of 2 microseconds per pixel, which corresponds to a maximum clock frequency of approximately 500 kHz. This allows complete readout of all 128 pixels in approximately 256 microseconds. Higher clock speeds may result in reduced signal quality and increased noise, so most applications operate between 250 kHz to 400 kHz for optimal signal-to-noise ratio.
Can I interface this sensor directly to Arduino without additional ADC?
Yes, the Parallax 28317 outputs an analog composite video signal that connects directly to Arduino's analog input pins (A0-A5). However, for optimal performance and faster sampling rates, external high-speed ADC modules like the ADS1115 or MCP3208 are recommended to achieve the full 500+ frames per second capability. The Arduino's built-in ADC operates at approximately 10 kHz, which limits frame rate to around 78 Hz per complete line scan.
What optical components do I need for focusing?
The sensor requires a simple camera lens assembly with focal length typically between 6mm to 25mm depending on your desired field of view and working distance. Standard M12 camera lens mounts are compatible with most Parallax sensor modules. For applications requiring fixed focus at specific distances, a simple plastic lens with aperture stop provides adequate performance. Ensure the lens focuses the linear scene onto the 128-pixel array without vignetting or distortion.
How do I implement edge detection with this sensor?
Edge detection is performed by analyzing the gradient of pixel intensity values across the 128-element array. Implement a derivative filter by calculating the difference between adjacent pixel values: edge_strength = abs(pixel[n+1] - pixel[n]). Peaks in this derivative signal indicate sharp transitions between light and dark regions. Apply hysteresis thresholding to distinguish genuine edges from noise, and use centroid calculation on the edge strength profile to determine precise edge location with sub-pixel accuracy.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Parallax 28317 TSL1401 Linescan Sensor Daughterboard Online in India
Purchase the Parallax 28317 TSL1401 Linescan Sensor Daughterboard online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Parallax 28317 TSL1401 Linescan Sensor Daughterboard with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.