Overview
This is a photoelectric water liquid level sensor that operates using optical principles.
The advantages of this photoelectric water liquid level sensor are good sensitivity and no need for mechanical parts - meaning less calibration!
The corrosion resistant probe is easily mounted and can handle high temperature and high pressure.
The arduino liquid sensor is equipped with an interface adapter for compatibility with the DFRobot "Gravity" interface.To ease the difficulty of using this arduino liquid sensor, a Gravity Interface is adapted to allow plug&play.
The Arduino IO expansion shield is the best match for this sensor connecting to Arduino, as this liquid sensor is able to work at 3.3V which makes it compatible with Raspberry Pi, intel edison, joule and curie.
Note: Avoid placing the sensor near bright lights or in direct sunlight as these can cause interference.
Tech specs
- Operating voltage: 5 VDC
- Output current: 12 mA
- Working temperature: - 25 ~ 105 ℃
- Low level output: < 0.1 V
- High level output: > 4.6 V
- Liquid level detection accuracy: ±0.5 mm
- Material: PC
- Measuring range: No limit
- Life: 50,000 hours
Get Inspired
Print a claw on your 3D printer and use a myoelectric sensor to control it.
"But can it run Doom?" is more than just a joke in the tech world. It is also a decent litmus test for the computing power of hardware. That test isn't very relevant for modern computers, but it is still worth asking when discussing microcontrollers. Microcontrollers vary in dramatically in processing power and memory, with models to suit every application. But if you have an Arduino Nano ESP32 board, you can run Doom as Naveen Kumar has proven. The Nano ESP32 is a small IoT development board for the ESP32-S3 microcontroller, featuring Wi-Fi® and Bluetooth® connectivity. It also has a relatively high clock speed and quite a lot of memory: 240MHz and 512kB SRAM, respectively. That still isn't enough to meet the requirements of the original Doom release, which needed a lot more RAM. But Kumar demonstrates the use of an MCU-friendly port that runs well on this more limited hardware. Want to give it a try yourself? You'll need the Nano ESP32, an Adafruit 2.8" TFT LCD shield, an M5Stack joystick, a Seeed Studio Grove dual button module, a breadboard, and some jumper wires to create a simple handheld console. You'll have to compile and flash the Retro-Go firmware, which was designed specifically for running games like Doom on ESP32-based devices. You can then load the specialized WAD (Where's All the Data) files. Kumar reports an average frame rate at a 320×240 resolution, which is very playable.