Mysensors RFM69 Livolo 2 channels 1 way EU switch front module

IMPORTANT NOTICE: I will abandon this project because of the bad design regarding the RFM69 module and its antenna - I had not so good results because of that and due to space constraints. I'm switching again to nfr24l01(the NRF51822 RF SOC actually) to see if it performs better in this case. If it works as desired then I'll publish the new project on openhardware.io. Thanks for understanding.

Please bear in mind that I'm not responsible if the Livolo manufacturer will change the board hardware revision on which this project relies!!! This project works with this Livolo board hw revision only: VL-C700X-1 Ver: C2 or similar

Description:

This is a Mysensors replica of the Livolo EU Switch(2 channels 1 way) front plate.

Description:

This is a Mysensors replica of the Livolo EU Switch(2 channels 1 way) front plate for the VL-C700X-1 Ver: C2 Livolo hw revision.

Key Features:

• Capacitive touch sensing using TTP223 specialized IC
• AT25DF512C-SSHN-B SPI flash module for OTA
• ATSHA204A for signing
• MySensors ready(Atmega328p + RFM69CW)
• DC-DC Buck converter in combination with a linear LDO voltage regulator for efficient noise cancelling (the used LDO reduces a little bit the Buck's converter current capability - down to 150mA from 600mA but this is not important as the whole board takes about 60mA at peak)

Work progress:

1. Test/verify the pcb board correctness(from both electrical and mechanical point of views) - DONE
2. Produce the initial PCB's using some external PCB manufacturer - DONE**
3. Components assembly(soldering) - DONE
4. Create Mysensors sketch code - DONE
5. Verify the real board with running code - DONE
6. Verify OTA - DONE

Instructions:

1. Wire a bridge in place of R3 and R13 as seen in the block diagram below:
2. Mount a X2 capacitor of 0.47uF rated at a minimum of 275Vac directly on the light bulb(in parallel) as seen in the block diagram from above
3. Upload the sketch provided with this project or roll your own

HW Revisions:

• 0.1 - initial hw design

Credits:

All credits go to MySensors team for the great work and to the opensource community