WWZMDiB-DIY Learning Kit Introductory Electronic Components Kit Birthday Gift Desktop Decorations(Fun DIY Soldering Kit,51 microcontroller ultrasonic Distance Meter)

Description

Product parameters：
💎Kit name: HC-SR04 ultrasonic rangefinder
⚡Input voltage: DC 4.5-5.5V
🥇LED light: 5mm red base plate size: 60 * 70mm
🥈Plus module overall size: 60 * 90 * 20mm
🥉Circuit board material: board thickness 1.6mm FR-4 plate

🍀1.PCB board printed with all kinds of components silkscreen logo, please check the silkscreen logo welding.
🍀2. The resistance is not divided into directions, but there are different yin values, so please pay attention to the distinction when welding.
🍀3. The long leg with a foot is positive (+), the short leg is negative (-); when welding, please pay attention to the direction of the corresponding PCB board silkscreen.
🍀4. Connect the power cord to the terminal block, pay attention to the distinction between positive and negative, do not connect the reverse.
🍀5. Welding order from low to high, from small to large, from inside to outside.
🍀6. Soldering iron welding temperature 320 ° -380 °, welding 3-5 seconds or so, not a long time welding! To avoid welding bad board ground.
🍀7. Circuit board identification VCC is positive, GND is negative.
🍀8. Pay attention to static electricity and the size of the product power supply, so as not to burn the circuit and components.