electronet-au/Smart-DoorWindow-sensor12Open source Smart door/window sensor. ESP32-C3 based with a custom power latch to obtain a deep sleep mode current of (30-60nA).
OBJEX DoorSensor v1.2 is an open-source printed circuit board by electronet-au, from the electronet-au/Smart-DoorWindow-sensor repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 20 × 50.2 mm with 82 parts on 57 nets, routed with 429 tracks and 111 vias.
It is built around the ESP32-C3-MINI-1-N4, BME680 and S-5701BC11B-L3T2U5, with the MDSM-4R-12-18, SN74LVC1G86DBVR-TP and RT9080-33GJ5 among its other parts. Its parts include 23 resistors, 14 capacitors, 9 ICs, 6 transistors and 4 diodes. It belongs with the ESP32 and RISC-V boards of this library.
DOC TO BE COMPLETED!
The documentation is not completed is will be edited in the coming days. Thanks!
Todo:
Todo next version (v1.3):
The focus of this project is to prove how it is possible to drastically reduce the power consumption(in deep sleep/standby) of battery-powered smart devices by developing a customized power latch. Better design of smart devices would ensure a longer product life cycle.
The current was measured with Nordic's power profiler kit , knowing that the current measured is less than the measurement range of this power profiler. I did several tests to verify the accuracy of the data. In any case the accuracy of the data, the consumption would be less than 200nA and this is a very good result considering that a similar device at a power consumption of 6-8uA.
The consumption in deep sleep(POWER LATCH) is the same whether the magnet near the sensor or not.
...in the coming days add more screenshots...
deepsleep: 300nA
...in the coming days add more screenshots...
| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 10K | Resistor_SMD:R_0402_1005Metric | R1, R2, R4, R8, R9, R10, R12, R15, R16, R17, R18, R19 |
| 4 | 10uF | Capacitor_SMD:C_0402_1005Metric | C1, C4, C9, C12 |
| 4 | 1K | Resistor_SMD:R_0402_1005Metric | R3, R20, R21, R23 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric | C10, C14, C15 |
| 2 | 100K | Resistor_SMD:R_0402_1005Metric | R13, R22 |
| 2 | 12pF | Capacitor_SMD:C_0402_1005Metric | C2, C3 |
| 2 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q4, Q5 |
| 2 | G*** | kibuzzard-64258E23 | kibuzzard-64258E23, kibuzzard-64258E23 |
| 2 | G*** | kibuzzard-64258E17 | kibuzzard-64258E17, kibuzzard-64258E17 |
| 2 | LOGO | KicadLibrary:logov2-mini | G***, G*** |
| 2 | R | Resistor_SMD:R_0603_1608Metric | R6, R7 |
| 2 | SN74LVC1G86DBVR | lib:SOT353 | U4, U5 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP4 |
| 1 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C5 |
| 1 | 100M | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 10nF | Capacitor_SMD:C_0402_1005Metric | C11 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 150K | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 1N4148WS | Diode_SMD:D_SOD-323 | D5 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 1uF/4.7uF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 2N7002KQBZ | lib:2N7002KQBZ | Q3 |
| 1 | 436331045822 | lib:436331045822 | S2 |
| 1 | 5204 | BatteryTerminal:5204 | U1 |
| 1 | 5226 | BatteryTerminal:5226 | U10 |
| 1 | BATT | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1 |
| 1 | BC857B_RF | lib:SOT95P237X112-3N | Q1 |
| 1 | BLUE | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | BME680 | Package_LGA:Bosch_LGA-8_3x3mm_P0.8mm_ClockwisePinNumbering | U6 |
| 1 | Crystal | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | Y1 |
| 1 | DMG3415UFY4Q-7 | lib:DMG3415UFY47 | Q6 |
| 1 | DTR | TestPoint:TestPoint_Pad_D1.5mm | TP7 |
| 1 | ESP32-C3-MINI-1-N4 | lib:XCVR_ESP32-C3-MINI-1-N4 | U7 |
| 1 | G*** | kibuzzard-63AF0800 | kibuzzard-63AF0800 |
| 1 | G*** | kibuzzard-64258E65 | kibuzzard-64258E65 |
| 1 | G*** | kibuzzard-64258FE0 | kibuzzard-64258FE0 |
| 1 | G*** | kibuzzard-642BF081 | kibuzzard-642BF081 |
| 1 | G*** | kibuzzard-642BF0F2 | kibuzzard-642BF0F2 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.5mm | TP8 |
| 1 | GND | TestPoint:TestPoint_Pad_1.5x1.5mm | TP2 |
| 1 | GREEN | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LOGO | libMaster:Xlogo | G*** |
| 1 | MCP1802T-1802I/OT | Package_TO_SOT_SMD:SOT-23-5 | U8 |
| 1 | MDSM-4R-12-18 | lib:MDSM4R1218 | S1 |
| 1 | NTNUS3171PZT5G | lib:ONSC-SOT-1123-3-524AA_V | Q2 |
| 1 | RED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | RT9080-33GJ5 | lib:TSOT-23 | U2 |
| 1 | RTS | TestPoint:TestPoint_Pad_D1.5mm | TP6 |
| 1 | RX | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | S-5701BC11B-L3T2U5 | Ablic:S'5701BC11B'L3T2U5 | U3 |
| 1 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP3 |
| 1 | TX | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | VBUS | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
It measures 20 × 50.2 mm and has 2 copper layers, 0.8 mm thick.
82 parts, built around the ESP32-C3-MINI-1-N4, BME680, S-5701BC11B-L3T2U5 and MDSM-4R-12-18. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the electronet-au/Smart-DoorWindow-sensor repository on GitHub, at the commit this page was made from: the board is OBJEX-DoorSensor_v1.2/OBJEX-DoorSensor_v1.2.kicad_pcb and its schematic OBJEX-DoorSensor_v1.2/BME680.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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