- Stock: In Stock
- Model: ST230038790
- SKU: ST230038790
Feature:
Product Name: Photosensitive Robot
Product model: SFT-Q03YH
Supply voltage: DC3-5V
Battery type: CR2032 button battery
Sensing device: photoresistor
Power source: 0827 vibration motor
Tail Lights: Red LED 5MM
PCB size: 40*43*1.6mm
PCB material: FR-4
Note: This kit requires self-assembly
Package includes:
1 x DIY kit
| Component name | Component position | Quantity |
| 1/4W Resistor 430R | R2,R3 | 2 |
| 1/4W Resistor 100R | R5,R11 | 2 |
| 1/4W resistor 3.3K | R6 | 1 |
| 1/4W Resistor L5K | R7 | 1 |
| 1/4W Resistor 10K | R8,R9,R10 | 3 |
| Photoresistor 5516 | R1,R4 | 2 |
| Transistor S8550 | Q1,Q2 | 2 |
| Transistor S9014 | Q3 | 1 |
| 5MM white hair red LED | LED | 1 |
| Electrolytic capacitor 100UF/16V | C1 | 1 |
| Plug-in chip LM358 | U1 | 1 |
| 0827 Vibration Motor | M1,M2 | 2 |
| CR2032 battery holder (battery not includes) | J1 | 1 |
| Toggle switch SS-12D07G3 | K | 1 |
| Blue and white potentiometer 10K | R8 | 1 |
| 3M double-sided tape | 1 | |
| Heat shrink tube 10CM | 1 | |
| Red and black cable | 1 | |
| PVC bottom plate | 1 | |
| PCB board | 1 |
Circuit principle:
Turn on the switch K, when the light hits the photoresistor R1 or R4, the value of the photoresistor decreases, the base voltage of the transistor Q1 or Q2 decreases, the transistor is turned on, and the motor of M1 or M2 vibrates and moves toward the light direction. The circuit behind R5 is the breathing lamp circuit. The core device is LM358, which together with peripheral devices forms a relatively accurate bistable circuit. R6 and R7 constitute the reference voltage of the dual operational amplifier. R10 is the feedback resistor of the operational amplifier. R8, R9, R10 , C1 decides to control the frequency of the breathing light, this circuit is adjusted by the R8 potentiometer.
