11 Dec 2021

Humidifier Water Tank with Ultraviolet Lamps

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This is the design of a multifunctional air purifier tank, please refer to 6-In-1 Modularized Air Purifier for details.
On the front of the water tank are the purifier module holder, electrode needles, 12864 LCD screen, 8 touch buttons, water tank cover, ultrasonic atomizing sheets (three sheets work at the same time to increase the amount of fog), and the atomizing sheet cover.
Remove the water tank cover, and then you can directly fill with water or insert a cola water bottle (500mL\2L); remove the atomizer cover, you can easily replace the atomizer (2p terminal socket, the atomizer is consumable, about 2,000 hours lifespan ).
Inside the base, there are strong magnets (3p, used for magnetic positioning), the motherboard, the speaker, the microphone, the touch PCB, the transfer PCB, the Hall sensor, etc.
One of the biggest problems with the mist humidifier tank is that when not used for a long time, the water in the tank will deteriorate and cause bacteria to exceed the standard.
We installed two 254nm cold cathode UV lamps in the front and rear of the tank, each with 3W of power. On a set schedule or intermittently, the UV lamps work briefly to ensure that the water quality does not deteriorate for a long time.
9 Dec 2021

The only right way to learn electronics is to practice: soldering, debugging, and summarizing.

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As engineers who have worked in the electronics industry for many years, here we share some tips for beginners to get started with electronic circuits:
1. The knowledge in the textbooks is never enough. It takes a quite long time for works to be compiled and sold, so relatively new technologies and solutions cannot be covered. Besides, some experiences are difficult to express clearly through words.
2. Do more hands-on exercises and experiments. Soldering, debugging, and summarizing are the most effective ways to learn circuit knowledge.
3. Understand the underlying physical principles of circuit knowledge. You can’t just memorize a theory, and you have to know at least one real-world instance of that theory.
4. You have to learn to buy some electronic components and tools. There are thousands of electronic components and tools that cannot be fully mentioned in a book, and they are also changing and updating. Only by being close to the market can you know what the world needs and what everyone else is doing.
9 Dec 2021

Circuitlots ◆ Infrared Automatic Power-off System

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Those engaged in electronics are always worried about burning something up. Luckily, we solved this problem. A pyroelectric infrared sensor and infrared pairs are installed to monitor the user’s working status. If the user leaves but forgets to shut off the soldering system, it will be automatically powered off by the MCU within a certain period. This is a very important feature we have developed because it greatly improves safety and reduces the risk of any fire hazards.
In addition, functions such as leakage protection, short-circuit protection and electrostatic protection are also very important. On the one hand, a good and professional experimental environment can effectively prevent beginners from being hurt; on the other hand, it can ensure accurate results of experiments, promote the success of experiments and production, and boost the confidence of beginners in learning. A simple example: When a chip is damaged by static electricity due to improper electrostatic protection, beginners often have to spend a lot of energy to check which component on the circuit board is faulty, or suspect that there are some bugs in their own program?

world’s safest soldering workbench

◆ Infrared automatic power-off system. (against fire)
◆ Leakage protection circuit. (against leakage and electric shock)
◆ Fireproof Bakelite platform. (against fire)
◆ Effectively grounded metal parts. (avoid static electricity)
◆ MCU-controlled current detection and replaceable fuse. (short circuit protection)
◆ Pb-free solder wire and air purifier. (against harmful smoke and dust)

2 Dec 2021

HX995 Digital Servo Motors Can Be Widely Used In Smart Toys

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HX995 servo is a digital servo that is compatible with the shape and size of the traditional 995 analog servos. The servo supports single-wire serial communication and IIC communication, and the baudrate is up to 1Mbps.
Compared with traditional servos, the advantages of HX995 are:
  • Serial bus cascading possible
  • More servo modes
  • Faster locking speed and higher torque
 
Servo modes of HX995:
  1. Position servo mode
The servo will move to the specified position and hold up at the set speed.
  1. Curve servo mode
By using cubic spline curve to accelerate and decelerate, it can move to the specified position more smoothly.
  1. Flexible servo mode
In the process of controlling the movement of the servo motor, the angle of flexible rotation can be adjusted in real time.
  1. Continuous mode
The motor rotates continuously at a specified speed, and can be forward and reverse.
  1. Braking mode
The motor works in the braking state, and the rotation damping is quite large.
  1. Stop without braking mode
The motor does not brake, and the rotation damping is small so that external forces can move and reposition it.
The HX995 servo uses copper gears, high-quality bearings and aluminum rudder discs to ensure high torque and a long lifespan.