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Esp8266 wifi gateway with RSSI for RFM69 and Wifi

mfalkvidd Mod 24 Jul 2017, 18:08 last edited by mfalkvidd 25 Jul 2017, 16:11

As part of helping troubleshooting in this thread, I built a RFM69 gateway and a node.

I decided to place the RFM69 node in a basement storage room. The room has been flooded a few times historically, so being able to monitor humidity in the room seems like a good idea.

The room has thick brick walls, which the RFM69-433MHz radio is much more capable to handle than the nrf24. Still, I wanted to keep an eye on the signal strength. Because of this, I added code to the gateway to report RSSI from the node.

I also added support for reporting the gateway's own perceived signal strength from my 2.4GHz wifi router.

The result looks like this:

Code is available on my Github,
https://github.com/mfalkvidd/Arduino-MySensors-ESP8266-RFM69-Gateway
https://github.com/mfalkvidd/Arduino-MySensors-RFM69StorageRoom
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Announcements • 23 Mar 2014, 08:24 • hek 2 Apr 2014, 14:39

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@NotYetRated Hope you'll find good uses and a fun time while building your sensors.
A low cost energy meter
My Project • 25 Jan 2024, 01:03 • OldSurferDude 12 Aug 2024, 06:03

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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 • 18 Oct 2024, 02:19 • OldSurferDude 18 Oct 2024, 02:19

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Door chime
My Project • 9 Mar 2025, 10:06 • Paul Scarbro 28 days ago

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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.
Interface-board-for-remote-control
My Project • 4 days ago • OldSurferDude 4 days ago

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Long time test done with soil sensor!
My Project • 7 Jan 2025, 09:13 • Nicklas Starkel 13 Jan 2025, 09:10

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13 Jan 2025, 09:10

Wow @Nicklas-Starkel congrats, that sounds great! And thanks for the feedback. Would you mind sharing your setup? Regards, Edi

Esp8266 wifi gateway with RSSI for RFM69 and Wifi

Suggested Topics

Welcome
Announcements • 23 Mar 2014, 08:24 • hek 2 Apr 2014, 14:39

A low cost energy meter
My Project • 25 Jan 2024, 01:03 • OldSurferDude 12 Aug 2024, 06:03

Water Meter or "How to get Home Assistant to send saved data to an Arduino"
My Project • 18 Oct 2024, 02:19 • OldSurferDude 18 Oct 2024, 02:19

Door chime
My Project • 9 Mar 2025, 10:06 • Paul Scarbro 28 days ago

Interface-board-for-remote-control
My Project • 4 days ago • OldSurferDude 4 days ago

Long time test done with soil sensor!
My Project • 7 Jan 2025, 09:13 • Nicklas Starkel 13 Jan 2025, 09:10

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Esp8266 wifi gateway with RSSI for RFM69 and Wifi

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Welcome Announcements • 23 Mar 2014, 08:24 • hek 2 Apr 2014, 14:39

A low cost energy meter My Project • 25 Jan 2024, 01:03 • OldSurferDude 12 Aug 2024, 06:03

Water Meter or "How to get Home Assistant to send saved data to an Arduino" My Project • 18 Oct 2024, 02:19 • OldSurferDude 18 Oct 2024, 02:19

Door chime My Project • 9 Mar 2025, 10:06 • Paul Scarbro 28 days ago

Interface-board-for-remote-control My Project • 4 days ago • OldSurferDude 4 days ago

Long time test done with soil sensor! My Project • 7 Jan 2025, 09:13 • Nicklas Starkel 13 Jan 2025, 09:10

0Online

11.5kUsers

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112.8kPosts

Welcome
Announcements • 23 Mar 2014, 08:24 • hek 2 Apr 2014, 14:39

A low cost energy meter
My Project • 25 Jan 2024, 01:03 • OldSurferDude 12 Aug 2024, 06:03

Water Meter or "How to get Home Assistant to send saved data to an Arduino"
My Project • 18 Oct 2024, 02:19 • OldSurferDude 18 Oct 2024, 02:19

Door chime
My Project • 9 Mar 2025, 10:06 • Paul Scarbro 28 days ago

Interface-board-for-remote-control
My Project • 4 days ago • OldSurferDude 4 days ago

Long time test done with soil sensor!
My Project • 7 Jan 2025, 09:13 • Nicklas Starkel 13 Jan 2025, 09:10

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