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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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Welcome
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@NotYetRated Hope you'll find good uses and a fun time while building your sensors.
Soil moisture sensor for house plants
My Project • soil moisture soil soil sensor plant • • Łukasz T.

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I think the comments you make are good. I do have a question about the removing the regulator. I assume you mean the 5V to 3.3V regulator. I connect to the 5V and I see lot of variation in moisture readings due to the variation in the output of the power supply (solar panel/stepdown). I have a calibration routine for that. The voltage can go as high as 4.2V, which I believe may be bad if I connect the power supply to 3.3V. Of course, this is not a concern if using two 1.5V batteries. With batteries, the moisture reading would be more consistent over a day. Lot of advantages there. I just don't like changing batteries and I really hate it when they leak. I have every reason to believe that my power supply will last 10 years and I am fortunate to live in a place with consistent sunshine . Someone replicating my project will have to take this into consideration. My design easily accommodates a different power supply. And my power supply could be used in other projects. Resistive vs Capacitive sensor. I'm glad you report good results. This gives people options. Water moisture: I've had good experience with "spraying" the Arduino with clear electronic coating and sealing the enclosure with liquid tape. -OSD
Radar motion sensor
My Project • • suresh sharma

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Door chime
My Project • • Paul Scarbro

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@Paul-Scarbro There are multitude of solution, but since we are in MySensors Land, let's do a MySensors solution. You'll quickly see that doing that adds a lot of overhead. We'll use an Arduino Nano or RF Nano if you're going to go whole hog. It can be run from 3.3V or 5V DC, not AC. The reed switch would be connected to an input of the Nano and one of the outputs would drive a relay. The relay would drive the chime. Your C++ program would be something like: #define inputButton 2; // connect reed switch here #define outputRelay 4; // connect relay to this pin see MySensors Relay example #define RELAY_ON 1 // GPIO value to write to turn on attached relay #define RELAY_OFF 0 // GPIO value to write to turn off attached relay void setup() { pinmode(inputButton,INPUT); pinmode(outputRelay,OUTPUT); // put your setup code here, to run once: } void loop() { // put your main code here, to run repeatedly: if (digitalRead(inputButton) == 0) { digitalWrite(outputRelay,RELAY_ON); wait(2000); // wait 2 seconds digitalWrite(outputRelay,RELAY_OFF); // now wait for door to close while(digitalRead(inputButton) == 0) ; //does nothing until reed switch opens } } There are some subtleties that I may have glossed over, but this is the gist. By looking at the MySensors Relay example, you'll see how to integrate this into a MySensors environment. That's where you'd want to get the RF Nano. I've made the assumption you're familiar with the Arduino IDE and you've looked into the MySensors environment.
Soil Moisture Sensor Powered by solar charged battery
My Project • battery home assistant low power eeprom solar calibration • • OldSurferDude

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@OldSurferDude I use this. https://www.homedepot.com/p/Orbit-Solenoid-for-Battery-Operated-Timer-57861/203151515 Instead of having to hold the valve open, i can just pulse it. I use a simple motor controller to pulse it and when i need to close it, pulse it in "reverse". That way I could use a battery and if it only opens once or twice a day it's only a half a second or so of draw off the battery.
Need help with Code. Simple Nod with 4 button's and 2 Led output. Cant get he Led to work as I whant. They respond but both lights
My Project • mysensors • • Knightan

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@Knightan I believe that your problem may be related to this block of code. See my thoughts as comments.... if (message.type == V_STATUS) { //This is true for all messages received // Change relay state state_1 = message.getBool(); //This sets state for state_1 to the received value. digitalWrite(LED_PIN_Channel_1, state_1?RELAY_1_ON:RELAY_1_OFF); // Store state in eeprom saveState(CHILD_ID_5, state_1); // Write some debug info Serial.print("Incoming change for sensor: STATE 1"); Serial.print(message.sensor); Serial.print(", New status: "); Serial.println(message.getBool()); } if (message.type == V_STATUS) { // Change relay state state_2 = message.getBool(); //This sets state for state_2 to the received value. digitalWrite(LED_PIN_Channel_2, state_2?RELAY_2_ON:RELAY_2_OFF); // Store state in eeprom saveState(CHILD_ID_6, state_2); // Write some debug info Serial.print("Incoming change for sensor: STATE 2"); Serial.print(message.sensor); Serial.print(", New status: "); Serial.println(message.getBool()); } It seems to me that state_1 = message.getBool(); AND state_2 = message.getBool(). So they both get set to the incoming value. I think you need to not set both to the same value and instead differentiate them to unique values. I could be wrong as I have not had chance to do anything related to mysensors for a long time now - I also don't use Domoticz. Have a look at the code on this page, it might help you a lot.... https://www.mysensors.org/build/relay

Another all-in-one PCB

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Another all-in-one PCB

Suggested Topics

Welcome Announcements • • hek

Soil moisture sensor for house plants My Project • soil moisture soil soil sensor plant • • Łukasz T.

Radar motion sensor My Project • • suresh sharma

Door chime My Project • • Paul Scarbro

Soil Moisture Sensor Powered by solar charged battery My Project • battery home assistant low power eeprom solar calibration • • OldSurferDude

Need help with Code. Simple Nod with 4 button's and 2 Led output. Cant get he Led to work as I whant. They respond but both lights My Project • mysensors • • Knightan

18Online

11.7kUsers

11.2kTopics

113.0kPosts

Welcome
Announcements • • hek

Soil moisture sensor for house plants
My Project • soil moisture soil soil sensor plant • • Łukasz T.

Radar motion sensor
My Project • • suresh sharma

Door chime
My Project • • Paul Scarbro

Soil Moisture Sensor Powered by solar charged battery
My Project • battery home assistant low power eeprom solar calibration • • OldSurferDude

Need help with Code. Simple Nod with 4 button's and 2 Led output. Cant get he Led to work as I whant. They respond but both lights
My Project • mysensors • • Knightan

18
Online

11.7k
Users

11.2k
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113.0k
Posts