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My current roller roller Shutter switch are two pushed buttons up and down. No stop button. When release the push button up or down, the shutter will stop. WIll it be compatible with this board or will i have to change the buttons ?

Found these bootloaders and using the 1MHz for some low power experiments. I did get this error message when burning the bootloader (using USBASP programmer) : "avrdude: WARNING: invalid value for unused bits in fuse "efuse", should be set to 1 according to datasheet This behaviour is deprecated and will result in an error in future version You probably want to use 0xfd instead of 0x05 (double check with your datasheet first)." The bootloader woas succesfully burned so the message was informational. I did look into this and made the following changes in boards.txt : I changed all the lines containing "......bootloader.extended_fuses=" There are multiples sections in the file that have these lines. old value -> new value 0x04 0xFC 0x05 0xFD 0x06 0xFE 0x07 0xFF I used this site link text for calculating the new values for the extended fuse. Now the error message is gone. Maybe this is of any help when using these bootloaders.

@sundberg84 [image: p.jpeg?size_mode=5] I was able to do a photo, so the dallas temp, and le33 "mask" is on the opposite side, I think this is the problem. (in your example pictures they are on the good side) No worries, I use currently the newbie pcbs for light switching,

Hello. I use an optical pair, all the processing is done by the processor.

irq=18 worked for me for anyone who comes along wondering

Sorry. Disregard.

Interesting, please note that you need to be a licensed ham radio operator, in order to use the APRS network.

FYI, just tossed out a Rev 2 because I'd left out the mounting hole clearances for the plane and resist.

Advantage of this sensor is fast and easy installing by the non qualified personal. The sensor is designed for large agriculture facility with many greenhouses where is needed to be controlled temperature and humidity, the atmospheric pressure is for control the motor of air inlet and outlet. With help of the sensor installed outside the greenhouse provide information about positive/negative pressure inside the greenhouse. Finlay the software read accurate temp/humid value of the Si7021, and only atmospheric pressure of BMP180, the temperature sensor inside the BMP180 is used only by the sensor itself to provide accurate atmospheric pressure measurements. The sensor can be used also for home automation, and drone applications where is needed correction of the UAV barometric sensor compared to the ground barometric sensor, also humidity measurement can help the pilot to calculate more accurate flying time.

Hi Neverdie, I am following you progress with the e-byte nrf52832 modules closely. Very nice work! Following a problem I still have I wanted to ask you how you specify the TX-RX? I am working with the board libary with platform.io and arduino code. Which internally is using arduino-nrf5 from sandeepmistry. Did you just change the variant.h? https://github.com/sandeepmistry/arduino-nRF5/blob/master/variants/Generic/variant.h Appreciate your help! Thanks!

Hello everyone, Had a moment to put in a post, to let you know I could answer questions. I'll probably put a few more designs up here if I get any interest. The Github for the design will always be the most recent, but I will release revisions here if/when they need to happen. This board came about because I had need of a fast sampling strain gauge load cell circuit for a project. I designed this to be a prototype board to work between different MCU boards and with varying load cells. This circuit has been tested using 3 different Arduino form factor boards, the Uno, the Sparkfun ATSAMD21G breakout, and the Adafruit Metro M4 Express. [image: 1547329404971-img_20190112_161433.jpg] I don't have the regulator populated in the image, I was using a wire jumper until deciding on which board this particular one would permanently reside, the Sparkfun board, for example, require a 5V v-in, whereas the Adafruit and Arduino can handle 12V. The 2.54mm pitch terminal blocks are spaced back from the edge of the board in case a smaller board is desired (to match the Sparkfun or Coridium board profiles), and to allow the use of a 90 degree pin header instead of the screw terminals without going off the end of the board.

Right you are. Live and learn (even at 81), and I even learned a new word -'vias.' Thanks.

Update: PCB with NRF24 standart version tested in hardware.

Hello. Any news from this project? Do you made the changes for the timer TLP?

And... after a while and some googling & Kicad learning, I have designed my first pcb. Below the final result [image: 1546180425000-3d-front-resized.jpg] [image: 1546180448336-3d-rear-resized.jpg] At the moment it is not tested but after that if someone is interested I can share it in openhardware. Below the schematic [image: 1546181445585-gp-pcb-schematic-001-resized.jpg] Any suggestion / improvement / comment is well appreciated.