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💬 Hover SmartHome sensor and controller system

openhardware.io 26 Sept 2016, 03:15 last edited by openhardware.io 26 Sept 2016, 05:12

https://www.openhardware.io/view/258/Hover-SmartHome-sensor-and-controller-system
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arduino 119 nrf24l01 69 esp8266 47 raspberry 22 stepper motor 3 smarthome 2 cortana 1 wiolink 1

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@alowhum thank you
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Hi @tbowmo, do you mind to explain a bit about the design? I'm interested with your design. I will use these steps for removing voltage regulator, http://goo.gl/CsZaNg So the design will be battery > external step up regulator (http://goo.gl/PFt99R - to stabilize 3.3v) > vcc pin ? with these then I can use my first post design? Thanks
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Ah.... Ok
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31 Jul 2022, 04:41

@nrf24_is_hard When I sent data between an Aduino and the RPi I discovered that I have to make the the receiving and the sending structs the same size AND the variables be on 4 byte boundaries. Change your char name[15] to char name[16] Another challenge is that the number of bytes of type int are different. If I remember correctly, Arduino Uno is 2 bytes and RPi is 4 bytes. To make matters worse, some compilers make the least significant byte the first byte of a word and others make it the last byte of a word. eg, sending the value 1 would be received as 16777216 (0x00000001 vs 0x01000000) There are a lot more gotcha's OSD
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UPDATE I think it's a problem with the arduino board itself. So since my previous posts I've tried multiple radios and I've got a 4 working nodes now: Mega + NRF24 UNO R3 + NRF24 DCcEle (clone) + NRF24 Nano DCCduino (clone) + NRF24 Plus the Raspberry Pi 2 as gateway with NRF24L01+ PA/LNA is working. So... it seems like it's a problem with that Uno board.... weird. I've tried multiple radios (specifically ones that worked on the other boards) and none of them work. Like I said before, the board and the Rp2 seem to be communication but not properly. Has anyone ran into a similar problem before?
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@jvdk I agree with the point made by @evb , why would you want to wire connect the ultrasonic node rather than the usual radio connection ? You are adding levels of complexity and power demands for what reason ? My ultrasonic water tank node (pro-mini+rfm69) is now 2 years on the same 2xAA batteries sending in levels every hour (RTC), the only problem encountered - condensation forming a drip on the face of the ultrasonic head during very low temperatures.

💬 Hover SmartHome sensor and controller system

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💬 Hover SmartHome sensor and controller system

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Having trouble getting 2.0.1-beta running on Raspberry Pi2 as gateway and controller Troubleshooting • raspberry serial gateway 2.0 • 24 Oct 2016, 13:55 • micah 24 Oct 2016, 17:11

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💬 NRF24 to RFM69 adapter
OpenHardware.io • mysensors nrf24l01 rfm69 nrf24 radio • 15 Jul 2018, 13:18 • openhardware.io 17 Jul 2018, 05:51

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