Once I decided to power the HX711 externally rather than through the solar node, it has turned out to be a nice little current monitor. Typical charging currents for indoor solar nodes that are far from windows is only around 50ua, and the HX711 seems good enough for monitoring charge currents at around that amount. :) Thanks @AWI for posting the project!

@Yveaux You board is almost perfect. You could just expose some of the pins with the next version. This would keep it very generic anf make it easy to add additional functions. Commercial devices contain temp, hum and light sensors. And a vibration sensor as thief protection. Most of that could easily fit in the molgan.

@gohan I tried. Unfortunately, it didn't seem to matter with either or both those changes :(

PIN as Ground http://arduino.stackexchange.com/questions/620/a-digital-i-o-pin-as-ground

@AWI I've made similar project but using RS485 and modbus for communication. Now I'm porting it into mysensors. In my project I've light sensor to lower fan revs during night (because of noise). I will try to post my sketch when I finish it.

@ross-shirer Thanks for bring this topic alive as I had not seen this before and it was just what i was looking for the basis of another project. I have thrown together a quick test node and it is working all fine with openHAB. The instructions for use are included within the program Summary block. 1. A local database with Card id's is kept in the node. Card id 0 is the "master master" card. With the master card you can: - Open the door lock (just present it) - Include other cards (present it twice and present the new card) - Delete cards (present it three times, present the card to be deleted and confirm with master card) - Browse the cards (present it four times), the display shows the card indexes with their status. So the MasterCard is needed to enable the other cards. Swipe the master card twice and then swipe the new card. Remember to comment the eprom clear command after first run otherwise the non MasterCard data will be lost on reboot. As i did not do that at first, so caused a few minutes delay. //cardDB.initDB(); // ONLY in the first run to clear the EEPROM store (comment later) Working fine for me with nine cards, tenth card unlocks ok but report status is incorrect. More than ten are not accepted by the program due to EPROM size limits. (time to add serial memory)

@hek thanks! It took us way more than expected to re-architect all the thing but now that is ready, happy with the result so your positive feedback is appreciated :-) Legacy myHouse issue was mainly around extensibility hence this distributed, plugin-based architecture allowing users to package functionalities and/or contents without me doing any change in the core code. And turning it in a cloud-based service (as an option) could be also really easy. But for now the hope is to build a little community around it so to make it evolve further. Just as a starting point :-)

@AWI I have access to the necessary most modules and electronic components in my city . so if you have idea for this told me and i am ready to test .

@AWI This sounds extremely cool. I will try it asap! Thanks for sharing!

@adds666 I'm not sure but I believe Domoticz prresents it's dimmer values in steps from 5 to 100 I believe. It'd about 10 steps. That's why I'm not sure if you can add more patterns. Unless you indeed change it to a percentage. Hope it helps

Hello AWI , is it possible to post the hole example sketch ?

@AWI. I was just thinking the other day I haven't seen you writing for a while. I hope you are making positive progress and nice to see you are back! :)

Now it is working extremely much better, I have 8 days in a row without any errors. I think this is how it should be.

@heizelmann I'm happy to see that you can appreciate my work as a continuation of the nice job you already did on this thread.

@AWI excellent! I have something looking a bit like this!! I will show you soon, maybe that will give your some ideas ;) btw nice integration :)

@AffordableTech will think about it... The weatherstation is a succes with everyone who sees it. I guess it bridges the gap between nerdy and the past. I will post a "techie" version in a few minutes. Basically has all the bells and whistles but less fun..

@koen01, really like this cool cube project. Couldn't you add it as a new project on openhardware.io? This enables me to show it on the mysensors.org build pages as well.

-- revisited --- I changed the bootloader to a 8mHz version. As the processor runs 8 times as fast the active period pulse width is now < 0.5 ms (earlier 3.8 ms) The sleep and active consumption have not changed. This would reduce the 'pulse' burden on the coin cell as attentively mentioned by @scalz. [image: 1457896553952-upload-49f13d13-d4ed-46aa-8576-a47e5f271d2e] Something comparable to 'internal resistance' increases as the charge reduces. This will impact the available voltage for the node. I used a conservative figure for battery capacity (50mAh) and a load current of 0.8uA which will be less if battery voltage goes down. [image: 1457897897595-upload-dae13a0d-52ee-46c3-b470-425dd5a225a0] [image: 1457898169118-upload-60cbec3f-4bb1-480a-a7a8-d5077d6b3f92] Have three nodes ready for real life test with constant battery measurement. I hope to report just within five years from now :zzz: