Just wanted to share my tonight creation

It shows Send and Receive RSSI and vcc (that btw is measured via voltage divider and is spot on with my multimeter)

I'd say to make something with pogo pins if you really need it once

I am not a super skilled programmer, so may I ask how would this fit with MySensors?

In fact @sundberg84 usually advices to have the antenna sticking out of the pcb underneath as the ground planes tend to what they are made for: shielding EM. Also trace antenna orientation plays a role too

Mysensors can handle both rfm69 encryption and also signing

#define MY_TRANSPORT_WAIT_READY_MS 5000

I am currently testing a couple of concepts to power an outdoor node for temperature and humidity with readily available stuff:

• 2.7v: using this supercap + this module, just hook up any 6v solar panel to Vin and the supercap on the Vout with a diode in between that will block any reverse current and most important will drop voltage by ~0.7v to make it suitable for the supercap. Then I connected a standard EasyPCB from @sundberg84 with standard voltage divider, SHT31 sensor and this booster

• 5.5V: using 5 of theese connected directly to 6v solar panel with a diode in between for the above reasons, then connected them to the Vin of the buck-boost module and node connected to the Vout. This time I had to do some changes to EasyPcb: I shorted REG jumper, shorted Vin and Vout on the regulator footprint just above the Arduino and made a different voltage divider on the prototype area with R1 1.22M and R2 300K in order to read a maximum of 5.57v

((1e6+220e3+300e3)/300e3)*1.1 = Vmax = 5.57 Volts
5.57/1023 = Volts per bit = 0.005448028

5.5V inside

Finished: the solar panel has been glued with transparent silicon for the entire perimeter

I wanted to share my finding following my RFM69 signal scanner I previously built. I used 2 types of antennas:

• Coil Spring from alixpress

• Hand made like the one mentioned by @sundberg84 in [his project](https://www.openhardware.io/view/389/EasyNewbie-PCB-RFM69-HWW-edition-for-MySensors

I let them run several hours reporting TX power since the new rfm69 driver adjusts power output to the default target RSSI of -80db

The test was done on the same spot (my desk) and the gw about 5 meters away (1 floor difference, and a couple of walls in between; gw running the coil spring antenna).
I am currently testing the SMA antennas and results are better than the hand made antenna with a TX power of 35/40% instead of 55/60%. My guess is the hand made antenna had to be squeezed inside the box getting a wrong orientation, while the SMA one is outside and it can stay perfectly vertical.

433MHZ SMA male plug 90° GSM GPRS Antenna for Wireless Data Transfer 5CM

$1.52

143 available

As soon as you do the changes in myconfig.h before the MAKE, you are fine

It is actually very simple project: I followed this guide -> http://www.sysrun.io/2017/02/22/use-a-esp8266-to-control-your-ac-via-mqtt/ and used a pn2222a to boost the IR Led like I have seen in this picture

For the control user interface I used MQTT Dash: the app is very simple, just add the appropriate dashboard element to each of the topics.

For MQTT service I used Cloud MQTT and it works perfectly.
This project started as a request from my father to be able to control his Daikin heat pump / AC and since he is not a very computer enthusiast, I had to find something really simple and stand alone without any other additional controllers. The user interface had to be very simple so the only 4 main functions were used, since he was requiring just to be able to switch it on remotely without any time schedule.
Yesterday I did some tests and the communication is really instantaneous. I was a little disappointed as I was able to send commands from the other side of the room only with led pointing a the AC unit (from below the unit it was not a problem at all). Next step would be to open the unit and try to find a 3.3/5V source to power the Wemos and put it inside.

Of course the IR library supports other brands and I think it can be converted to mysensors use by replacing the MQTT communication with the usual mysensors functions.

@sebex unless you have hass.io you should be able to SSH into the rpi

I'd say the ones with benzene

Do you really need a compact device?

@dmonty did you use the shielded radio module?

Does it work with a shorter time than 8S?

@pepson then it is going to be quite difficult for you to work on DIY electronics projects if you don't how to program.

It is a common issue I see in these small cheap meters. There is always the openhardware current meter for what you are suggesting

Aneng an8009 or similar is still a really good buy, 9999 counts is not something you get usually from cheap meters

@boozz serious water leak heppened once in 40 years

Hi
I have been searching if this cable can be used like the cn105 for Mitsubishi devices, but so far I only found libraries for daikin that use IR. Is there really no other way than IR?