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Talk about fun sensor hardware, MCUs, PCBs and how to power your sensors here.

  • AC Routing Trace Width and Clearance

    vac width trace spacing
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    Does anyone have any opinions of voltages and current through screw terminals? I'm looking around for terminals for AC power, i can get some 3.5mm pitch that handle >250VAC and then other 3.5mm will only handle >100VAC. I know there is different grades of plastic and metal, but can there seriously be that much difference or is this an instance of the manufacturer just covering their backs and i would be fine to use any terminal?
  • Smallest possible GW

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    @alexsh1 Alrighty, thank you for that information. May be worth a look at for myself :)
  • Different atsha204a

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    hi. mysensors is compatible with sot version only for the moment. other package not yet if I'm right. sot version isn't i2c ;) sot version use one pin only.
  • Dimmer modules that work on 120v/15a or 20a circuits?

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  • 42v LED dimmer

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    @the-cosmic-gate That should be a leading edge (Triac based, relatively cheap) or trailing edge (expensive) dimmer I suppose. a leading edge dimmer is discussed in this thread: https://forum.mysensors.org/topic/3953/4-channel-ac-dimer/2 Is there anyone here that combined a mysensors-sketch with a trailing edge dimmer? BR, Boozz
  • How to use DistanceSensor?

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  • New Raspberry Pi to NRF24l01+ Shield

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    @ceech thanks for the board - arrived via eBay today! Looking forward to tinkering!
  • Is there a dipole version of NRF24L01+?

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  • 0 Votes
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    Eval boards with the extended range module already installed are available now for $20: http://www.cypress.com/documentation/development-kitsboards/cyble-224110-eval-ez-ble-psoc-xtxr-evaluation-board
  • Radios -Again

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  • Electric Gate contoller

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  • DYP-ME003 on a coin cell / 2xaa battery

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    Hi. I have not so much experience with pir modules. I use an homemade pir, which works well :) and I am doing my own software for programmable features like nb of pulses for validating a trigger, blindtime etc..And it's a coincell board without any regulator, so.. But in your case, what I would do..(and it's easier with a scope !), is: LC filter, and you could add one capa before inductor too in some case, and maybe in this case, it's better to place the LC filter near the chip you want to clean (like radio or your pir module for instance). This is when you have enough room. But when you have not enough room, so it's easier to place the LC filter just after the booster, for all the board. use a good PSRR etc LDO for you PIR module. I think if you power directly the PIR module from the booster, without LDO that could be difficult..because of the mV PIR variation of analog part. Having a good ldo could help to smooth a bit too.. adding multiple, different small capa value near your pir module, for smoothing some frequencies...And you could add a 100u to absorb some voltage fluctuations too. So, you have to choose values for capa vs frequencies you want to filter. And another thing too, you need to choose the right inductor, they are not all equal..(datasheets curves and frequencies you want to filter ...) I hope this helps a bit :)
  • Fuses to protect attached relays on board?

    relay general lighting fuse
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    Or even this MOSFET and it would seem this is the datasheet after a quick google.
  • Some Questions with gardening node (sensor/accurator)

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  • Fuse clips

    fuse holder fuse clips fuse
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  • Status of pins during bootloader

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    AndurilA
    @Yveaux thats what I was thinking about. Thanks for confirming.
  • Hardware advice for newbe

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    parachutesjP
    @Jasper-van-Winden well I was wrong. I had 13m CAT 5e cable laying around and just tested it with one DHT22 and it seems to be working: [image: qot0js.jpg] [image: 2nlwnqs.jpg] To consider: The Arduino Nano is powerd with a stable DC supply and it is only one DHT22, could be different outcome when you connect 5 of them all with long wires.
  • Gas (Co2) sensors on batteries

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    alexsh1A
    @korttoma I'll be adding BMP180 shortly as I need pressure and temperature to make a conversion.
  • PWM frequencies on pin 9,10,11

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    I've found that adding this to setup() can cure flickering: //Increase Timer frequency to prevent flicker in Pins 5,6 PWM TCCR0A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM00);
  • Atmel has been bought!

    atmel microchip
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    yep, it's a long time Microchip wanted to acquire Atmel. few months ago,they won negociations. I like Microchip products, and this is a solid company (I started by learning microchip like lot of people!). They have started to release an MPLAB Xpress some times ago, which is a cloud based MPLAB, with community etc..I have not tried it, as I prefer my offline compilers but I hope their association with atmel will be promising in future for us..

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