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STD nRF52840_Water_Flood_Sensor
License: Public Domain
Mode: Editors' pick
- 19
Update time：
2022-03-11 15:53:27
Creation time：
2019-10-10 09:15:47
Description
Water flood (leak) sensor
Based on Nordic Semiconductor [nRF52840](https://www.nordicsemi.com/Products/Low-power-short-range-wireless/nRF52840) module [E73-2G4M08S1C](http://www.ebyte.com/en/product-view-news.aspx?id=445) from Ebyte.
Board size and shape adopted to case of water flood sensor [EW70_433 (EV1527)](https://www.alibaba.com/product-detail/433MHZ-EV1527-code-wireless-water-leakage_62208273670.html?spm=a2756.review-list-buyer.0.0.KpUk8P) from Shenzhen Kaipule Technology Co., Ltd.
Power source provided by one CR2450 coin battery.
In depend on firmware there is can support for Bluetooth 5, Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT and 2.4 GHz proprietary stacks.
Board has two independent probes for water sensing, button for mode selection and LED for indication. There are also SWD interface pins for firmware upload and debugging.
Sensor image
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | E73_2G4M08S1C | U1 | E73_2G4M08S1C.1 | 1 |
| 2 | IRLML2402TRPBF | Q1,Q2 | SOT-23(SOT-23-3) | 2 |
| 3 | 62 | R1 | 0603 | 1 |
| 4 | Header-Male-2.54_1x4 | P4 | DIP-1X4P-2.54MM-M | 1 |
| 5 | 3.3M | R3,R2 | 0603 | 2 |
| 6 | 32.768KHz | X1 | OSC-SMD_L3.2-W1.5 | 1 |
| 7 | Probe_1 | P1 | HDR-1X1/2.54 | 1 |
| 8 | Probe_2 | P2 | HDR-1X1/2.54 | 1 |
| 9 | Probe_3 | P3 | HDR-1X1/2.54 | 1 |
| 10 | CR2450 | B1 | BS-2450-2SMT | 1 |
| 11 | 12pF | C1,C2 | 0603 | 2 |
| 12 | 47uF | C3 | 1206 | 1 |
| 13 | KLS7_TS3611 | SW1 | SWITCH_KLS7-TS3611 | 1 |
| 14 | 1uF | C5,C6 | C0603 | 2 |
| 15 | 100nF | C4 | C0603 | 1 |
| 16 | 100K | R4,R5 | R0603 | 2 |
| 17 | 19-21SURC/S530-A2/TR8 | LED1 | LED0603-RD | 1 |
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