This project involves multiple sections, including human body sensing, light source sensing, key input and other functions. 1. Preparation of electronic materials In addition to the components mentioned in the BOM list, you also need to go to Lichuang Mall to purchase the following modules (if you don’t have them, you can search them on a certain website): 1. Ultrasonic atomizer (installed at position H4 on the schematic diagram) ; 2. Pyroelectric module (of course, the author here just uses the module directly for laziness. Friends with solid basic knowledge can also purchase pyroelectric chips and sensors in the Lichuang Mall to directly design a circuit) (installed at H2 in the schematic diagram) ; ​[9S[]AM.png] 4. Two 18650 lithium batteries 2500mA![{L67E5}3H8YQ@XS5$[60X[H.png] 5. Connecting wires (due to the need to lead out some devices during the design and installation of this product use, so everyone needs to prepare wires for connection and use) ![9K[Y)5[A49`{5KP4IIV_O(T.png] 2. Preparation of necessary materials for the scene 1. Purchased foam as the base plate of the entire scene![9K [Y)5[A49(TD(YE$VKC(9.png] 2. Model making DIY handmade carbonized bamboo sticks (I bought two bundles at the time)

3. Resin (crystal glue) . It is recommended to purchase (according to It depends on the scene you want to build, some colors can be adjusted, so you have to save money): blue, green, brown, white 6. DIY handmade sand table building model materials, wire tree production (it is recommended to buy more, it is very cheap , a roll of wire costs a few cents, and it takes about 10-15cm to make a landscape tree, and a general scene requires about 7-8 trees) Students with poor hands-on ability are advised to buy more and practice, or directly purchase finished landscape trees. But the price is relatively high 7. Glue: white latex (I bought a barrel of this for 9.9 because I use it more), 502 (bought about 5 bottles) 8. Grass powder, tree powder (according to what you want Depends on the scene) ![34$QQRM}GO]00W4U${7G9KT.png] ![]LPYXKY@{DI]@O2OJDDZK)2.png] 9. Purchase optical fiber 0.5mm light guide strip and transparent light transmission strip![ ]ID25ZA~6KAWE9CH@MSLW%4.png] 10. In addition, you need to prepare: hammer (claw hammer), hand knife, screwdriver (+ and -), brush (for white latex and paint), ruler, marker, screws M3.5 or M4, sandpaper, hot melt glue stick and glue gun, waste cardboard 30x30cm, needle nose pliers (for twisting wire tree), diagonal pliers (or electronic pliers are also acceptable), cotton (or DIY cotton fiber feather silk cotton) ), a hair dryer, an electric mosquito swatter priced at RMB 9.9 and a colander priced at RMB 3.8 with free shipping, fine soil and sand, some 0805 white LED lights and thin copper wire or enameled wire (about 0.254mm), and some transparent plastic straws (20cm long)

4. The entire scene production process (very long) 1. First use a foam cutter to cut the foam into the scene shape you want 2. Use a marker to plan the area on the foam template (for example: the location of the house, the location of the creek, the wooden bridge The location, location of waterfalls, pools, etc. are free to use according to your friends' ideas) 3. If you make a mistake during the cutting process, it doesn't matter. You can cut the remaining waste wood and glue it with white latex to fill it. , remember not to drop 502 glue directly on the foam 4. If you want to make the uneven feeling on the ground on the marked scene, you need to mix the white latex with 3 parts of water to 7 parts of white latex, and Paste flexible paper (or white toilet paper) on the cut foam and brush it with the mixed white latex. The paper can be kneaded and brushed directly on it. What you want is the wrinkled feeling 5....... The whole process needs to be made very carefully and carefully to create the beauty. Circuit installation 1. Solder the basic circuit and burn the program. Connect the buttons with wires and solder the 9 RGB lights in the middle. After that, cut the optical fiber to a length of 30cm. Use a small section of each RGB lamp to stick 9 optical fibers on the surface of the lamp with 502 glue. The effect is as follows . 2. Dig out a PCB-sized groove under the originally made foam base plate, and place the LED holes and optical fiber holes to be installed. Drill the hole and insert a transparent plastic straw into the hole for protection. The first thing to note is that the optical fiber is very fragile, so be careful when breaking it. 3. Use the purchased bamboo sticks to make a small wooden house, and stick the ultrasonic atomizer piece to the chimney mouth with hot melt glue. , stick a cotton swab under the ultrasonic atomizer piece, and use a waste mineral water bottle to pick up a small cup and stick it underneath. 4. Remove the previously prepared scene and arrange it to see the effect (it is not fixed), and then decide to go As you can see in the direction of the lines, we used flexible paper to make the bottom board on the originally cut foam board, painted it with brown paint, painted it with white latex, sprinkled some grass powder, and added Blue base material 5. We will weld the prepared 0805 white LED light with copper wire (or enameled wire, note: do not touch each other to prevent short circuit), use a small wooden stick to make a small street light, and weld it Stick the LED light on the street lamp, stick it on the base and connect the circuit 6. Paint the iron tree with paint, and use white latex to dip it in tree powder and install it in the scene 7. Pour the prepared resin in the pond (Pigments can be added to the resin to adjust the color) Glue the fiber to the bottom of the waterfall. Note: You must first lay the circuit in the stream and then add the resin, otherwise you will not be able to operate it. The position of the button is as shown in the picture: lower left of Picture 2 There is a plastic piece on the top of the four small black dots picture because the resin is fluid before it dries, so in order to prevent it from slipping away, a plastic piece is used to block it. 8. The final product picture is as follows: (different scene modes, different lighting effects , the status of each part is different) (the video file is left at the end)