ok, it is good diea https://gardepro.com/ (1) What is a hunting camera The so-called hunting camera, also known as the field camera, is a low-power and portable camera specially used for observing and monitoring wild animals in the field. Based on the official pictures, we have a brief introduction to its features Switch: Power switch, which is used to control the power switch of the whole machine.Type-C: Used to charge the battery inside the device Photosensor: It is essentially a photosensitive diode, which is used to sense the intensity of external light, so as to switch between day and night mode, and to quickly find image exposure parameters when it is quickly started. High-definition lens: used for video recording and photography 940 night vision light: refers to an infrared night vision light with a wavelength of 940 nanometers, which is used for filling light at night. Antenna: Here is the 4G module antenna, using an external antenna, its performance will be better than the FPC antenna Microphone: Used to pick up voices PIR sensor: It is a human activity sensor based on infrared technology, which can generally sense infrared radiation of 8~14 microns. Memory card: This refers to external memory, TF card Speaker: Used for voice playback SIM card slot: Used to insert a SIM card (2) Brief introduction of functions The above is a brief introduction to the components used in the device, and here it needs to be introduced to transform it into a function that is easier for us to understand: Data communication using mobile cellular networks (2G/3G/4G/5G) requires a mobile network signal to function properly. Through PIR sensing that there is an animal in front of the device, if an animal is detected, the device will start the camera to take pictures and videos. At night or when the light is low, you can turn on the 940 infrared light to fill the light to achieve black and white shooting at night The device is equipped with a microphone and speaker, which can realize the functions of voice pickup, voice playback, intercom and so on The device is powered by a 18650 battery, which can be charged via USB. From the disassembled device, we will find that it separates these functions on 4 PCB boards Camera sensor lens plate 940 infrared light board, light sensitivity is also on this board PIR plates Trail camera's printed circuit board A trail camera's printed circuit board (PCB) holds the camera's components, including the image sensor, lens mount, and infrared filter. The PCB is designed to be durable and withstand high temperatures. Components on a trail camera PCB Image sensor: Soldered directly to the PCB Lens mount: Attaches over the sensor and is held to the PCB by screws IR filter: Part of the optical path for most trail cameras Motor assembly: Part of the optical path for most trail cameras PCB design The size and design of the PCB depends on the type of camera and the space needed for its components The components on a camera PCB are usually arranged in rows, either vertically or horizontally The rows may be offset from one another so that they don't overlap Controlled impedance Controlled impedance is important for camera PCBs because they transfer high frequency signals