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Another all-in-one PCB

jeti last edited by
Hi all,

as many of you already did your own design, I also started working on that, as any other solution only covered 75% of my whishes .
Therefore i established my own :bowtie: , but as I am a beginner in Hardwaredesign I would like to ask for your opinion to do as little mistakes as possible.

What i wanted:
- arduino Pro mini (china)
- 2 LED Dimmer circuits
- 1Wire for SHt7021 and light sensor
- DS18b20 connection
- PIR connection
- small form factor (no mounting holes needed yet)
thats what i came up with (KiCad files):
0_1459080161874_Mysensor_1.pdf
0_1459080236009_Mysensors_01.kicad_pcb
0_1459080257370_Mysensors_01.sch

It would be great to get some feedback about layout and the schematics!

thanks in advance!
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@NotYetRated Hope you'll find good uses and a fun time while building your sensors.
Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway
My Project • • fsgraz

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A low cost energy meter
My Project • • OldSurferDude

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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.
Water Meter or "How to get Home Assistant to send saved data to an Arduino"
My Project • • OldSurferDude

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HVAC Controller
My Project • • Michael Link

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We are of like minds, Don't like the cloud based controls (that's another discussion). In my case I have a Bryant/Connex system, heat pump, variable speed fan and 4 zones. There's a lot going on: the 4 zones creates 16 profiles. The fan speed for a profile will depend on the indoor and outdoor temperature. The thermal fluid pump also has to be controlled. A profile will have an optimal air pressure, so there's a sensor there. The controller works just fine not being connected to the cloud. But I want to set the parameters remotely, Bryant/Connex can do this. I also wnat the status of the various actuators and sensors to show up in Home Assistant. The signals sent over the RS422 are proprietary. My plan was to reverse-engineer the signals. After doing this I'll have to experiment to get the right mix of air pressue, fan speed and thermal fluid flow for each profile. I'd like to do the same for my AO Smith heat pump water heater. I'd like to follow your progress. OSD
nRF24Doctor
My Project • power consumption diagnose transmission delays compare modules radio quality doctor range gateway location nrf24 radio • • Technovation

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The output of the display could also be sent over serial, but the whole idea is you can walk around with the doctor and improve your results as you go.

Another all-in-one PCB

Suggested Topics

Welcome
Announcements • • hek

Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway
My Project • • fsgraz

A low cost energy meter
My Project • • OldSurferDude

Water Meter or "How to get Home Assistant to send saved data to an Arduino"
My Project • • OldSurferDude

HVAC Controller
My Project • • Michael Link

nRF24Doctor
My Project • power consumption diagnose transmission delays compare modules radio quality doctor range gateway location nrf24 radio • • Technovation

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Another all-in-one PCB

Suggested Topics

Welcome Announcements • • hek

Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway My Project • • fsgraz

A low cost energy meter My Project • • OldSurferDude

Water Meter or "How to get Home Assistant to send saved data to an Arduino" My Project • • OldSurferDude

HVAC Controller My Project • • Michael Link

nRF24Doctor My Project • power consumption diagnose transmission delays compare modules radio quality doctor range gateway location nrf24 radio • • Technovation

15Online

11.4kUsers

11.1kTopics

112.7kPosts

Welcome
Announcements • • hek

Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway
My Project • • fsgraz

A low cost energy meter
My Project • • OldSurferDude

Water Meter or "How to get Home Assistant to send saved data to an Arduino"
My Project • • OldSurferDude

HVAC Controller
My Project • • Michael Link

nRF24Doctor
My Project • power consumption diagnose transmission delays compare modules radio quality doctor range gateway location nrf24 radio • • Technovation

15
Online

11.4k
Users

11.1k
Topics

112.7k
Posts