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💬 MICRO MULTI SENSOR

openhardware.io 22 Jul 2020, 19:25 last edited by openhardware.io 8 Aug 2020, 20:59

https://www.openhardware.io/view/796/MICRO-MULTI-SENSOR
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nrf52832 22 si7021 14 bme280 8 cr2032 5 htu21d 5 nrf52811 4 sht20 3 nrf52810 3 tmp117 1 lmt01 1 lis2dw12 1 lis2dh12 1
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NeverDie Hero Member 23 Jul 2020, 05:01 last edited by NeverDie 23 Jul 2020, 05:02

Looks great! Very nice integration with the box you found. Keep up the good work.
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Can you tell something about the range of this node? And do you see a chance to post the schematic?
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Hi @chey, no, with the pro minis and MySensors lib I couldn't get less. Didn't measure with yet another multimeter though... My battery sensors are working now for about a year and the battery levels are between 65% and 70%. The sensor furthest from the gateway is at 65% and the 3 others at 70%. Not bad I think. https://forum.mysensors.org/topic/11499/checking-mechanical-locked-doors-by-a-battery-based-windows-door-sensor-node
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@nca78 I don't use ATAES132A. I put it in just in case I wanted to invest some more time using it. I now just use SimpleEncryption, it's secure enough for my purpose atm. (since the area I live in uses KAKU a lot, an insecure 433MHz lightswitch, I don't think anyone would be bothered to hack my temperature sensors. I found 163 433Mhz devices when I left domoticz logging for a couple of days.)
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You can put 100uf on each even 200uf would not be able to handle only one tx, so.. but you need them at least for coin cells. you would need more capa to handle tx..but the more capa the more time they take for recharging, and the recharging if big, increase internal res of the coin cell and that's not so good too; to prevent this that would need a current resistor limiter..etc a whole balance! On mine for instance, I have 100uF for coincell, 100uF for PIR and 86uf on radio. Fresh varta coincell 3.02V, after multiple presentation tx 2.85V if I remember, not so bad. but that's an homemade pcb. Another notes, it's better to use ceramic capacitor (because of leakage, if you want to optimize), and better smd, but that's not your case I think.
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hello @berkseo can you share sketch for this sensor ? i am very intrested about this thank you PS: great job !
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@Nca78 said in Particle Powered Air Quality Sensor Logging to Google Docs: @Sebex said in Particle Powered Air Quality Sensor Logging to Google Docs: Perhaps I don't necessarily need to use the same pins Both the sensors you quote are using I2C. So they both use the same 2 pins (SDA, SCL) to communicate. You can put many I2C sensors on those same pins, they each have an address to know which sensor is receiving/sending data to the master (here, your arduino). Look for a tutorial on I2C first. Thanks I get it now
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@NeverDie Sorry for delay... This is example (improved version with 3d printed fixer)

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