Thermometer Thermometer Electronic Welding to Make DIY Parts The infrared temperature sensor MLX90614 can be used to measure the temperature of an object without touching the object, but the measuring distance of the sensor is ≤2CM.
When charging, you need to turn the toggle switch to off. The red light will stay constant during charging and turn off when charging is completed.
Product parameters:
Main control chip: STC8H1K28
Charging voltage: DC5V;
Input voltage: DC3.7V~5V;
Shell size: 85mm*30mm*20mm
Weight: 45g
Components list:
| Component name | Component number | Parameter | Package | NO. |
| Active buzzer | B1 | Diameter 12mm | BUZ-TH_BD12.0 | 1 |
| 1206 capacitor | C1 | 47UF | C1206 | 1 |
| 0805 capacitor | C2, C3, C4 | 103 | C0805 | 3 |
| Light-emitting diode | GREEN | 0805-Green | LED0805_GREEN | 1 |
| Touch the button | KEY | 6×6-handle 11cm | TH_4P-L6.2-W6.2 | 1 |
| SMD transistor | Q1 | SS8550 | SOT-23 | 1 |
| 0805 resistor | R1, R2, R3, R4, R5, R6 | 1k | R0805 | 6 |
| Light-emitting diode | RED | 0805-Red | LED0805_RED | 1 |
| MP3 toggle switch | SW | MK-12C02 | SW-SMD_MK-12C02-G025 | 1 |
| Microcontroller | U1 | STC8H1K28 | LQFP-32 | 1 |
| Lithium battery charging chip | U2 | TP4056 | SOP-8 | 1 |
| USB interface | USB | MICRO-USB-BF-5P | MICRO-USB-B_5P | 1 |
| Infrared temperature sensor | MLX90614-BAA | 1 | ||
| TFT color screen | 80×160-8P | HDR-M-2.54_1X8 | 1 | |
| Lithium battery 250mA | 1 | |||
| PCB board | 1 |
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