Single chip microcomputer STM32L151CCU6
1206RGB (single)
0201 package SLP0603 ESD electrostatic diode 5V one-way ESD
Board Crystal 3.2*2.5mm 3225 24M (24.000MHZ) 12PF 10PPM 20PPM 30PPM
Probe domestic double-head probe 038-BB-5.7L The shape of the two ends of the needle is outside the pointed needle
NE555 is one of the 555 series timing ICs. The pin function and application of the 555 series IC are compatible, but the different models have different stability, power saving and oscillation frequency. It's not the same; the 555 is a very versatile and fairly versatile timing IC that requires only a few resistors and capacitors to generate the pulse signals of the various frequencies required by the digital circuitry.
The features of NE555 are:
1. A simple resistor and capacitor can be used to complete a specific oscillation delay. The delay range is extremely wide and can range from a few microseconds to a few hours.
2. It has a large operating power range, and can be matched with logic gates such as TTL and CMOS, that is, its output level and input trigger level can be combined with the high and low states of these logic series.
3. The output current of the output terminal is large, which can directly push a variety of automatically controlled loads.
4. It has high timing accuracy, good temperature stability and low price.

Single board machine automatic reset circuit based on NE555
Single board machine automatic reset circuit diagram


Internal Ceramic Antenna

  • The Description of PCB/FPC/Ceramic Antenna

Cellular /WiFi multi-band embedded flexible PCB antenna

PCB antenna is widely used in Bluetooth module, WiFi module, ZigBee module and other single-band module circuit boards.
Advantages: the cost is very low, a debugging without debugging again.
Disadvantages: suitable for single band, such as Bluetooth, WiFi. Different batches of PCB antenna performance will have certain deviation.

It is equivalent to pulling out the antenna line on the PCB board and using other external metals to do the antenna. It is usually used in medium and low end mobile phones with complex frequency band and smart hardware products.

Advantages: suitable for almost all small electronic products, can do more than ten frequency band of complex antennas, good performance, low cost.
Disadvantages: need to be debugged separately for each product.

The Picture of PCB/FPC/Ceramic Antenna

Wifi Pcb Antenna




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Yetnorson Antenna Co., Ltd. , https://www.xhlantenna.com

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