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| 5 |  Build Battery Free IoT Sensor Custom PCB Project | King SunPCB @kingsunpcb6886 | 928 | — | 90 |
| 14 |  Precision Sensing in IoT: Environmental Sensor PCB Demo | King SunPCB @kingsunpcb6886 | 862 | — | 89 |
| 3 |  DIY Smart Activity Tracker | Custom PCB Project | King SunPCB @kingsunpcb6886 | 804 | — | 90 |
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| 16 |  Custom PCB Powered Bluetooth LED Spectrum Project | King SunPCB @kingsunpcb6886 | 609 | — | 88 |
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| 20 |  Custom PCB Powered DIY FM Radio Project | King SunPCB @kingsunpcb6886 | 397 | — | 88 |
| 13 |  DIY ESP32 WiFi Clock | Custom PCB Project | King SunPCB @kingsunpcb6886 | 240 | — | 89 |