Did anybody tested this board with an ATSHA204A on A2? The ATSHA204A works with 2.0 to 5.5 V.

@Mikael-Kermorgant I'm using fhem. It is possible, that I can set an offline state after 20sec with fhem. I will try this.

Hello,
I've successfuly uploaded these sketch to my Atmega328p. It works fine. Two things I want add:

• I have changed the speed in the file MyConfig_h -> #define BAUD_RATE 9600 (otherwise I got nothing at the serial output)
• The sensor sends an 1 on "motion". How can I send an 0 on "no Motion" after 20sec? (low on data pin?)

Thank you

@bjacobse Which Optiboot loader did you exactly use? I can try it. I have an Arduino Pro Mini.

@bjacobse I'm out of fucus. What was the problem? Can you burn the bootloader+sketch with an USBtiny on an bare Atmgea328p? Connected on MISO/MOSI/SCK/RESET/VCC/GND?
The Arduino Pro Mini is different from the Atmgea328p. On the arduino is an external clock.

@bjacobse I thought the USBtiny is only to upload the bootloader, not the mysensors software.
I did two things:

1. Burn the bootloader atmega328_1a.hex to an bare Atmega328p with an Arduino as ISP
2. Upload an simple scetch to the Atmega with an RX/TX uploader (I used an USB to TTL with an FTDI and also an Ardunino Uno without the Atmega chip, like here http://forum.mysensors.org/uploads/files/1454449901412-7.png) Both are working.

I'm still waiting for the PCB. After receiving I want to build the motion sensor.

@bjacobse Witch bootloader you have taken?

@m26872 Sure, but not with an bootloader (optiboot with intenal clock) on an bare Atmega. Later I will try this: http://forum.mysensors.org/uploads/files/1454449901412-7.png
I build some MySensors with an Arduino Micro, but not with only an Atmega.

Update: I don't know what's different, but this works. Perhaps I forget to connect Reset from FDL -> Pin 1.
Now I can upload simple sketches.

@bjacobse No, used the bootloader from here (http://forum.mysensors.org/uploads/files/1443392692398-atmega328_1a.hex). This is an bootloader for the internal clock.
Baud settings to upload the sketch or the bootloader?

Hello,
I have problems to upload the scatch to the bare Amtel. I use an USB-TTL FTL Adaper and connect, RX/TX and Reset Pin with 100n->DTR. But I got always errors on uploading.

The bootloader I have successfull burned with an raspberry pi and gpio (http://www.lxccu.com/hb-raspberry-bootloader-update

sudo bin/avrdude -Cbin/avrdude.conf -p m328p -P gpio -c gpio -U lfuse:w:0x62:m -U hfuse:w:0xde:m -U efuse:w:0x07:m -U lock:w:0x2F:m -e -Uflash:w:1443392692398-atmega328_1a.hex:i
avrdude: safemode: Fuses OK

How can I got it working?
Thank you

Thomas