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Description
Elecrow Paa3905 Optical Flow Camera
Is compact and ideal for low-light-level operation
Provides stable motion tracking, perfect for drones and rolling robots
Features an 8-bit, 35 x 35 pixel imager sensitive to visible and infrared light
Comes with a custom-fit polycarbonate lens for the PAA3905 IC
Offers standard and enhanced detection, automatically adjusting to light conditions
The Elecrow Paa3905 Optical Flow Camera is a compact breakout board for PixArt's PAA3905 optical flow sensor. This sensor is specifically designed for low-light level operation and is ideal for far-field tracking applications. It provides motion tracking with a stable hovering function, making it suitable for drones.
The sensor provides lateral velocity information, which is useful for UAV hovering and navigation. It also has an application in the navigation of rolling robots, within the limitation of its maximum 7.2 rad/s flow speed. The sensor employs an 8-bit, 35 x 35 pixel imager, sensitive to both visible and infrared light. It automatically identifies features in the pixel map and tracks them from frame to frame at up to 126 Hz frame rate to identify the average feature motion.
The sensor comes with a properly fitted L242-ZSZ1 polycarbonate lens made specifically for the PAA3905 IC. However, the task of gluing this lens to the PAA3905 liquid crystal polymer package is left to the user. It is recommended to glue the lens where significant mechanical impact during use is expected.
The sensor uses standard SPI for communications and has an interrupt for data ready. Power input is limited to 1.8 - 3.6 V and GND. There is also an LED sync pin exposed on the board for controlling an LED via a FET for custom illumination.
The sensor offers two sensitivities: standard detection and enhanced detection for rough terrain at >15 cm height. It can automatically switch between bright, low-light, and super-low-light conditions. The sensor can operate in navigate mode producing delta X and Y values which are proportional to lateral velocity.
The sensor can also operate in raw data mode producing 35 x 35 pixel images from the sensor at a frame rate of ~18 Hz. This makes the PAA3905 a cost-effective, low-resolution, infrared-sensitive video camera.
Please note that the sensor needs to be held stationary for the duration of grabbing raw data until the data array is completely read out. This is to avoid blurring or changing of the pixel values during the readout process.
If you are not satisfied for whatever reason with a Product you bought on the Site, it is possible to return it for refund within 30 days from the date you received it unless otherwise indicated in the Product listing. You must first advise the Vendor associated with your order in your account to obtain a return authorization (‘’RA’’) number before returning a Product. (‘’RA’’) numbers are valid for 30 days, within which time the returned Products should be received by the Vendor. No returns will be accepted without having previously obtained an (‘’RA’’) number. The Product must then be returned in its original packaging (in perfect condition for resale) with its receipt and your (‘’RA’’) number. Reimbursement will be denied for any Products which do not conform to the above mentioned conditions.
Build-it-yourself Robot Parts are not refundable once assembled. Robots & Kits requiring assembly or soldering are also not refundable once assembled, soldered or modified in any way. All sales of robotic software and apps are final and cannot be refunded or exchanged. Returns are not accepted on special orders and clearance items except when they are found defective, in which case the Product may be repaired or replaced at the Vendor’s discretion. 20% Restocking fees may apply if you are returning a large quantity of the same Product that was ordered specifically for you from the manufacturer.
Please note that all items will be reimbursed within 7 to 14 days of receiving the Product (shipping fees excluded). You must also cover the cost of returning the Product. Shipping fees will only be refunded if the return is a result of a shipping error on our part. Cleaning fees of USD 100 may also be charged if a domestic robot is returned and has not been properly cleaned.
