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STD LoRa inductive cyble water meter sensor

LoRa inductive cyble water meter sensor

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License

CC BY-NC-SA 3.0

License: CC BY-NC-SA 3.0

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Update time: 2024-02-25 15:38:21
Creation time: 2023-01-09 18:34:40
Description

Description

This is a sensor to put onto a water meter having a rotating metallic disc called "cyble". It detect the oscillation weakening when the inductor is in the front of the metallic part. LoRa module transmit measure values.

 

Firmware is an example of working. It must be adapted to the shape of the cyble (half disc, third disc) and to the LoRa packet to transmit.

 

Design explanations could be found here :

https://www.sanglierlab.fr/2022/12/08/capteur-sans-fil-pour-compteur-deau-avec-cyble-partie-1-principe-de-fonctionnement/

https://www.sanglierlab.fr/2023/01/12/capteur-sans-fil-pour-compteur-deau-avec-cyble-partie-2-ameliorations-du-prototype/

 

Design Drawing

Design Drawing

schematic diagram
1 /
PCB
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ID Name Designator Footprint Quantity
1 100pF C1,C7,C9 C0805 3
2 100nF C2,C3,C4,C5,C11,C13 C0805 6
3 2.2nF C6,C8 C0805 2
4 10uF C10 CASE-A_3216 1
5 22uF C12 C0805 1
6 SS14 D1,D2 SMA_L4.2-W2.6-LS5.3-RD 2
7 AVR_ISP_INLINE ISP1 AVRISP_INLINE_SMD 1
8 SERIAL J1 HDR-M-2.54_1X4 1
9 1mH L1,L2 L-05HCP 2
10 LED LED1 LED0805_RED 1
11 MODE PUSH KEY-SMD_4P-L6.0-W6.0-P4.50 1
12 470 R1,R3,R6,R8 R0805 4
13 470k R2,R5,R7,R9,R12,R14 R0805 6
14 100k R4 R0805 1
15 1k R10,R13 R0805 2
16 47k R11 R0805 1
17 10k R15,R16 R0805 2
18 ATMEGA328P-AU U1 TQFP-32_L7.0-W7.0-P0.80-LS9.0-BL 1
19 LM4040AIM3X-2.5 U2 SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR 1
20 SX1278 - RA01 U3 WIRELM-SMD_M-SX1278S2 1
21 JST-XH-02-PIN X1 JST-XH-02-PACKAGE-LONG-PAD 1

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Project Attachments

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1

InductiveWaterCounter.zip

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