[Solved]HomeduinoRFSwitch on RaspberryPi with LLC

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Hey everyone,
I kinda need some help with HomeduinoRFSwitch on RaspberryPi.

I set up homeduino on my RaspberryPi following this great guide by @leader21.

First I tried the non-LLC version on the 3.3V Pin which worked quite okay. But I wanted the Receiver to be a little bit more sensitive so I bought a logic level converter.

Now the receiver isn’t receiving anymore when I hit the remote buttons even though I wired everything exactly as told in the guide (only exception are the pins. I used gpio0 and gpio2)

This is what I tested:

• voltage tester on the HV of the LLC: ~5V
• voltage tester on the LV of the LLC: ~3V
• voltage tester on the receiver: ~5V
• continuity tester between RXI and the data pin of the receiver: continuity
• continuity tester between RX0 and the data pin of the RaspberryPi: continuity
• continuity tester between data pin of the receiver and the data pin of the Raspberry: discontinuity
• continuity tester between data pin of the receiver and the data pin of the Raspberry while pushing the remote buttons: discontinuity

I’m not a great technician and I have no idea what these test reveal but shouldn’t there be continuity between the data pin of the receiver and the raspberry pin at some point?

In my config.json the plugin looks as follows:

{
      "plugin": "homeduino",
      "driver": "gpio",
      "driverOptions": {},
      "receiverPin": 0,
      "transmitterPin": 2
}

When starting pimatic the log returns:

13:00:25.319 [pimatic] info: Starting pimatic version 0.8.68
13:00:30.711 [pimatic] info: Loading plugin: "pimatic-cron" (0.8.5)
13:00:33.533 [pimatic] info: Loading plugin: "pimatic-mobile-frontend" (0.8.63)
13:00:38.362 [pimatic] info: Loading plugin: "pimatic-ping" (0.8.3)
13:00:38.599 [pimatic] info: Loading plugin: "pimatic-ds18b20" (0.8.8)
13:00:38.788 [pimatic] info: Loading plugin: "pimatic-openweather" (0.8.8)
13:00:39.674 [pimatic] info: Loading plugin: "pimatic-pushover" (0.8.4)
13:00:39.894 [pimatic] info: Loading plugin: "pimatic-sysinfo" (0.8.13)
13:00:40.590 [pimatic] info: Loading plugin: "pimatic-homeduino" (0.8.51)
13:00:45.087 [pimatic] info: Loading plugin: "pimatic-lcd" (0.8.3)

On startup the debug returns:

13:00:53.665 [pimatic-homeduino] debug: data: "ready"
13:00:53.720 [pimatic-homeduino] info: Connected to homeduino device.
13:00:53.894 [pimatic-homeduino] debug: data: "ACK"
13:00:53.912 [pimatic-homeduino] debug: Receiving on pin 0

Help is highly appreciated

best,
fletcher

hm … to be honest, I never used this setup myself with a LLC since I’ve had no reason for that.
If this fails at all, I will remove this from the howto.

do you have some 10k resistors?
you could try to build the voltage divider.

If I’m the only one with this problem don’t bother. I will try the 10k resistor variant tomorrow and will get back here.

And I’m curious if someone else has this problem or could test it real quick with a spare llc.

Best,
fletcher

Update:
After buying a Arduino Nano clone receiving is now possible. But somehow sending isn’t. Do I have to turn off debug for that?

And when I used the receiver on the 3.3V GPIO without and LLC or Homeduino the pimatic switches changed when I pushed the buttons on the remote. This isn’t working anymore either. Any ideas?

Okay. Everything is working as it supposed to. (I had the wrong “houseCode” in my config.json)

best,
fletcher

Nice to hear! Oh well… and so easy to solve