💬 MyMultisensors
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@NeverDie saying this you're challenging me lol :) more seriously, I have no real issue.
what would you simplify? can't be more simple imho. no regulator, just batt.. I still can use 2xaa/aaa. That would ease a bit. the circuit works fine as expected ;) but that would be less fun without optimizations ;)Things I have thought when I did my choice:
- as the pir analog is sensitive, I wanted no regul for this one. or I would go for a booster and then more hardware debug (I have already a one cell optimized design that I plan to try with this pir, just to know if there will be a rev2 lol..). But that would need more care&filtering with good quality components (shielded inductors, ferrites, capacitors...) to prevent false trigger.
Like this one I did https://forum.mysensors.org/topic/2951/my-mysx-multisensors-board or my ulpnode clone ;) That would be an overall more expensive solution. but with less maintenance and one cell ;) - use 1uA digital PIR...not cheap
- use a better mcu like cc1310 with its power domains and events. but not mysensors/arduino.
- coincell is just for the fun as this design. and like I said I can use 2 lithium or alkaline.
- as the pir analog is sensitive, I wanted no regul for this one. or I would go for a booster and then more hardware debug (I have already a one cell optimized design that I plan to try with this pir, just to know if there will be a rev2 lol..). But that would need more care&filtering with good quality components (shielded inductors, ferrites, capacitors...) to prevent false trigger.
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Few pics of another board i have just assembled. I have just noticed I didn't show any proof/pics :confused:
Top view
With this lense, I get 5-6m.
Bottom view, with rfm69, coincell holder and AVRSPI/FTDI connector.
I am waiting for rev 1.1 pcb. No big changes, I improved a bit silkscreen, removed the schmitt trigger to save some power and in place i use pinchange int, makes more sense. Few routes and size changed.
Though, 328p is memory limited, I have to disable debug for this one! -
nothing fancy, just wanted to share how this is working as we're all busy..
there is a small problem with my widgets but no matter :blush: I show you what this board outputs if you're curious, and I'm beginning to like this board :heart_eyes:
I will change my dashboard later, it's just for fun.
For power consumption, few reference for sleep time : old VC506 multimeter but working well + uCurrent Gold
- PIR enabled, other sensors+MCU in deep sleep with interrupt on pins : 4-5uA for Varta CR2032 coincell, 3-4uA for 2xAAA Duracell
- PIR enabled, other sensors+MCU in deep sleep with interrupt on pins + WDT enabled : 11uA for the coincell, 8uA for 2xAAA
- PIR enabled, MCU active 1Mhz, other sensors sleeping with interrupt on pins + WDT enabled : 730-740uA for both
not that bad :)
I have an other proto waiting (for fun because i do not really need it lol). it's another version not for coincell, but as thin and much smaller! with ota back. I thought for coincell, ota or chain tx pulse, was a bit too much battery killer..even if CR2450 imho...and with our preferred lib :) there are multiple chain tx for presentation, some signing stuff etc..and you can't pause this to limit internal resisitance of the coincell..The sketch is still in progress. I mean it's working of course, but still looking to improve a bit things..but i can show you the infos and commands which are available for the controller. That should help to save enough power I think:
// For controller. CHILD_ID are presented. CMDID are not presented to not charge radio tx. But are available from controller, using receive() // CHILD NODE ID/CMD ID Description #define CHILD_ID_PIR 1 // PIR sensor #define CHILD_ID_TEMP 2 // Temperature sensor #define CHILD_ID_HUM 3 // Humidity sensor #define CHILD_ID_LIGHT 4 // Ambiant light Child node ID #define CHILD_ID_BATT_SENSOR 5 // Battery voltage, % is reported by sendbattery stuff #define CHILD_ID_RSSI 6 // Radio rssi #define CHILD_ID_DOOR 7 // Door reed switch #define CHILD_ID_PIR_EN 8 // Enable PIR #define CMID_FULL 10 // Command from controller with all params below in one tx. below is more for debug.. #define CMID_PULSES 11 // Command from controller to set PIR number of pulse for windows time #define CMID_WINDOWTIME 12 // Command from controller to set PIR window time #define CMID_BLINDTIME 13 // Command from controller to set PIR blind time #define CMID_CANCELTIME 14 // Command from controller to set PIR cancel time #define CMID_EN_LIGHT 15 // Command from controller to enable Light sensor threshold #define CMID_LIGHT_MODE 16 // Command from controller to set Light sensor special mode (for instance, enable pir at certain light level only...) #define CMID_LIGHT_H 17 // Command from controller to set Light sensor high threshold #define CMID_LIGHT_L 18 // Command from controller to set Light sensor low threshold #define CMID_LIGHT_DELTA 19 // Command from controller to set difference of lux for update controller #define CMID_TRANSMIT_INTERVAL 20 // Command from controller to set time between sensor updates #define CMID_TH_DELTA 21 // Command from controller to set difference of temp/hum for update controller #define CMID_EN_LED 22 // Command from controller to set ledSee you soon :)
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@carlierd hello. hehe yep a bit complete, very memory ric-rac limited :) It's rssi of the node tuned by ATC ;) I have modified libs, but i'm late on pr...sorry
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Yo,
for those who have not seen my latest rev..apologize, I'm working hard to release all my stuff ;)
It's still working well btw. this is the revision i will release i think (i have few other nice iteration but that's enough!).
- Size is 25mmx49mm (same size as a nodemcu)
- Same specs as before, plus OTA. So optimized for very low power and coincell management. Temp/hum/pir/lux/contact door input
- Thickness depends on the battery used. That's great as now it's possible to use different kind of battery holder :) CR2032 for the thinnest (8mm without PIR) very thin!, CR2450, or through hole 2xAAA holder
- you can see a test I want to try: a special antenna i saw on the forum. I will compare it with straight wire antenna, and coiled wire antenna.
See you soon :)
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another little pic :yum:
left to right: 1) pcb without holder, 2) with cr2032 holder, 3) cr2450, 4) 2xaaa
different antenna format, i have not compared yet. But the straight one, if i remember well, reached 40-50m range with one brick wall (All are the low power version of rfm69, CW). As you can see the coiled antenna (4) does not take so much place compared to the 1.9€ special ant (3).
I can cover a nice range of use, yeah :) -
Hi @carlierd
i'll fix this! There is still my first version i posted there, on the old topic, https://forum.mysensors.org/topic/3600/my-other-pir-multisensor-on-coin-cell
PIR is repsonding well, depending of the sensitivity i set in sketch. same for batt!
Many sensors but all low power :) Except reed switch option, of course my power consumption results above are without reed switch. If i need it, i use a 1M res min (increase a few uA).see you soon
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@anticimex almost! in fact i noticed that's mostly the same schematic if you look at different source. of course it's a PIR ! Regarding the app note you showed me, resistors, capa values changed, and not same ref of comparator (lower power consumption here). so it's very low power :)
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Would it be possible to buy it pre-assembled soon?
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Hi.
yes i'm preparing files for the fabhouse.
As you can see i've done a little update on my description, i'm focusing on my "work in progress" stuff to "released" at openhardware because i would like to release my others boards etc. and have my mind free for software. That will be hard for a pcb addict like me :)
I hope we'll get a reasonable price..This will be a project for contributing to Mysensors project ;) -
Hi.
yes i'm preparing files for the fabhouse.
As you can see i've done a little update on my description, i'm focusing on my "work in progress" stuff to "released" at openhardware because i would like to release my others boards etc. and have my mind free for software. That will be hard for a pcb addict like me :)
I hope we'll get a reasonable price..This will be a project for contributing to Mysensors project ;) -
Hi,
is it possible to get the actual sketch ? -
hi.
i've updated the bom. you can use CSTCE8M00G55-R0.
it's optional, you can omit it if you want, and use internal 8mhz
