This is a small (17.9 mm x 10.3 mm) breakout board for PixArt's PAA3905 optical flow sensor. It provides X-Y velocity at 126 Hz via Optical Flow and 35 x 35 pixel video camera at 18 Hz. There is a well-commented Arduino sketch showing how to use the device for navigation and frame grabbing. The frame grab rate is significantly improved over its predecessor, making for a practical low-resolution still imaging and video camera capability. Power usage is a modest 3.5 mA and the sensor can move in and out of shutdown mode quickly allowing flexible power management. The light level adjustment is automatic (although can still be done manually), streamlining sensor management. The sensor is smaller than its predecessors, with fewer pins making design and assembly easier. Light level sensitivity extends down to 5 lux. The frame grab occurs at a crisp ~15 Hz (56 milliseconds to complete), allowing low-resolution video imaging using the infrared-sensitive sensor element. Open source design!

I will present how I interacted with Elecrow and what I have from this provider, and I will start with CrowPanel ESP32 1.28-inch Round Display.

The project represents an electronic switch actuated by the value of the light intensity that excites a photoresistor.

Detect USB Killer flash drivers and prevent damage to hardware.

Avoid getting very high temperatures on Raspberry PI 5 which can break your computer board, transforming it into a funny but expensive coaster

I used this board to connect an Intel Compute Stick with mail hdmi connector to a portable 7-inch display with female hdmi input. You can use it as you wish. The clearance between the soldered connectors is 7 mm.

Create a custom ESPHome dashboard for your smart home setup with the help of CrowPanel 7" HMI Display

A project for automation, hobby and also learning.

This 4 digits 7 segments display module is controlled using 74HC595 Shift Register. The module uses a single standard common anode display

DIY High Performance & Fully Protected 300W Stereo Class D Amplifier using TAS5630B for your Active Speaker or High Power Bluetooth BomBox.

This a version of a well known and desired project by any maker.

300W TPA3255 Car Audio amplifier amplifier, The design includes 12V battery to +40V Interleaved DC-DC Boost Converter with Fuse and Battery Reverse protection.

Foldable Lamp Box - Night Light - reacts to sound and has adjustable brightness, USB port for charging, runs 24h on Battery - ATtiny85 processor - 25x WS2812 leds