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Another case for Temp/humidity

rborer last edited by

Few pics of my very simple DTH22 sensor long range (used to monitoring my wine cave temperature). A simple case 3D printed...
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cadet last edited by

Hi
Can share stl ?
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FotoFieber Hardware Contributor last edited by @rborer

@rborer
How long is battery life with this setup?
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gohan Mod last edited by

What board did you use underneath the mini pro? Are you powering radio directly from batteries?
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rborer last edited by @FotoFieber

@FotoFieber , I've built the same sensor, and it works since now 6 months with 2 AA
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rborer last edited by @gohan

@gohan , the board is a great contribution from here: https://oshpark.com/shared_projects/uXIff7XO
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rborer last edited by @cadet

@cadet please find here the case: https://www.tinkercad.com/users/d3dPgqW3Cif-richard-borer
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gohan Mod last edited by @rborer

@rborer
Nice board, very compact. Do you know how much does it cost?
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cadet last edited by @rborer

@rborer
Thanks
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@OldSurferDude yes, you are correct. this sensor is capable of 50A continuous, which safely I would make it working at 40A max., but for such an important load as in your case I would go for a beefier one, like the ACS75x, 77x, but at this point I would also change the node's form factor for space and insulation reasons. On my application on the RV I have a max. curr. of 13A running on a AWG14-16 cable (European rules for RVs), so I did not ask myself too many questions beside, of course, safety. About the signal, it will be a sinusoidal signal swinging around Vcc/2. Vcc can be easily measured internally on the ATmega328. On all my DC sensors I measure Vcc at every loop, just before measuring the ADCs. Honestly, when the space is not an issue like in my RV, I would rather use a ring core current transformer, and I would get rid of noise, response time, power dissipation, but over all no need to cut any cable. Long story short, it has been a nice experiment and I used it for 6 months, and then I switched back to my RF-NANO based RS485-Modbus - Mysensors bridge connected to an off-the shelf power analyzer. Just for fun I attach a pic of my 12Vdc sensors installed on my RV. Forgive me for the spaghetti wiring on the right side, but this is an area that needs improvement.
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