This page (revision-8) was last changed on 2021-04-06 09:41 by Murray Altheim

This page was created on 2021-04-06 09:04 by Murray Altheim

Only authorized users are allowed to rename pages.

Only authorized users are allowed to delete pages.

Page revision history

Version Date Modified Size Author Changes ... Change note
8 2021-04-06 09:41 2 KB Murray Altheim to previous
7 2021-04-06 09:30 1 KB Murray Altheim to previous | to last
6 2021-04-06 09:28 1 KB Murray Altheim to previous | to last
5 2021-04-06 09:27 1 KB Murray Altheim to previous | to last
4 2021-04-06 09:25 1 KB Murray Altheim to previous | to last
3 2021-04-06 09:10 1 KB Murray Altheim to previous | to last
2 2021-04-06 09:06 1 KB Murray Altheim to previous | to last
1 2021-04-06 09:04 1 KB Murray Altheim to last

Page References

Incoming links Outgoing links

Version management

Difference between version and

At line 1 added 2 lines
This page describes two __Optical Flow Sensors__ produced by Pimoroni.
At line 3 changed 5 lines
Normally the PMW3901 Optical Flow Sensor is used by flying drones to
measure the distance moved over the ground. In the case of a
Mecanum-wheeled robot, the PMW3901's camera would be mounted just over
its 80mm minimum focal distance and its x,y output used for the robot's
odometry, i.e., to measure how far the robot has traveled.
Normally the __PMW3901 Optical Flow Sensor__ is used by flying drones to measure the distance moved over the ground. In the case of a Mecanum-wheeled robot, the PMW3901's camera would be mounted just over its 80mm minimum focal distance and its x,y output used for the robot's odometry, i.e., to measure how far the robot has traveled.
At line 9 changed 4 lines
While the sensor itself provides numeric values, this video shows a test
rig using a 5x5 RGB LED matrix that indicates which direction the
sensor has moved by color: red for port movement, green for starboard,
cyan for forward and yellow for aft.
While the sensor itself provides numeric values, this video shows a test rig using a 5x5 RGB LED matrix that indicates which direction the sensor has moved by color: red for port movement, green for starboard, cyan for forward and yellow for aft.
At line 27 changed one line
* [PAA5100JE-Q Optical Tracking Chip|https://service.robots.org.nz/wiki/attach/OpticalFlowSensor/PAA5100JE-Q-GDS-R1.00_25072018.pdf]
! Key Features
* Working range of 15 to 35 mm
* No lens focusing required during lens mounting process
* Power consumption of 6 mA typical @ run mode (chip only)
* 16-bits motion data registers
* Motion detect pin output Internal oscillator – no clock input needed
! Applications
* Devices that require near field motion detection, e.g Robot Cleaners
!! Links
* [PAA5100JE-Q Optical Tracking Chip Product Datasheet|https://service.robots.org.nz/wiki/attach/OpticalFlowSensor/PAA5100JE-Q-GDS-R1.00_25072018.pdf]