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💬 Raspberry Pi Fan Breakout

openhardware.io last edited by openhardware.io

https://www.openhardware.io/view/8268/Raspberry-Pi-Fan-Breakout
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How to make sense of Struct data received from Arduino in RPi via NRF24?
General Discussion • arduino raspberry pi rf24 • • nrf24_is_hard

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@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
💬 Temperature-Humidity-Pressure Sensor
OpenHardware.io • arduino temperature esp8266 sensor humidity raspberry pi esp32 pressure • • openhardware.io

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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.
Having trouble getting 2.0.1-beta running on Raspberry Pi2 as gateway and controller
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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?
💬 Raspberry Pi gateway interface
OpenHardware.io • gateway nrf24l01+ domoticz raspberry • • openhardware.io

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Hi @GertSanders, Do you happen to still have the Eagle project files from version 3 you created and shared on OSH Park? I'd like to add a set of pads for the mini smd version of the NRF24L01. If not, I'll just use the version 2 files from openhardware.io and try my best to recreate the changes you made between them. Kind regards, AH
Gateways
Development • esp8266 raspberry pi serial gateway nano rpi tcp gateway mqtt gateway • • OldSurferDude

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@OldSurferDude well, the ESP8266 is limited to 4 TCP clients in arduino IDE. This can't be really increased. I did som experiments and you can set it up to 15, but after the 5th client on my web server, I got a freeze. Maybe you got something wrong. #define MY_GATEWAY_MAX_CLIENTS 2 defines how many controllers (eg Home Assistant) can connect to the gateway, not how many sensors/MySensors devices. And yes, you can have multiple TCP gateways in HomeAssistant. I got an NRF24, an RFM95 long range and a RFM95 short range gateway (all based on ESP32) on the same Home Assistant. Regards, Edi
Handy Serial Gateway for testing.
Hardware • raspberry serial gatewayc • • Dheeraj

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💬 CM1k Breakout Board -- Neuromorphic Chip
OpenHardware.io • arduino i2c breakout board neuromorphic general vision artificial neural network cognimem cm1k • • openhardware.io

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@kristof-delaere The terms that you refer to are footprint/package specifications (size, shape). Here are links to the above components on digikey: CMOS SMD (oscillator) http://www.digikey.com/product-detail/en/epson/SG7050CAN-27.000000M-TJGA3/SER3999CT-ND/5175091 0207W (120 ohm resistor) http://www.digikey.com/product-detail/en/tt-electronics-welwyn/WRM0207C-120RFI/985-1466-1-ND/3648019 0207W (2.7k ohm resistor) http://www.digikey.com/product-detail/en/yageo/MCP100JR-2K7/MCP100JR-2K7-ND/2169183
Protocole radio for new device
Development • arduino raspberry radio protocole • • jaumard

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@AWI thanks for pointing me to the doc it look great ! I will give it a try

💬 Raspberry Pi Fan Breakout

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Troubleshooting • raspberry serial gateway 2.0 • • micah

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Handy Serial Gateway for testing.
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💬 Raspberry Pi Fan Breakout

Suggested Topics

How to make sense of Struct data received from Arduino in RPi via NRF24? General Discussion • arduino raspberry pi rf24 • • nrf24_is_hard

💬 Temperature-Humidity-Pressure Sensor OpenHardware.io • arduino temperature esp8266 sensor humidity raspberry pi esp32 pressure • • openhardware.io

Having trouble getting 2.0.1-beta running on Raspberry Pi2 as gateway and controller Troubleshooting • raspberry serial gateway 2.0 • • micah

💬 Raspberry Pi gateway interface OpenHardware.io • gateway nrf24l01+ domoticz raspberry • • openhardware.io

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Handy Serial Gateway for testing. Hardware • raspberry serial gatewayc • • Dheeraj

💬 CM1k Breakout Board -- Neuromorphic Chip OpenHardware.io • arduino i2c breakout board neuromorphic general vision artificial neural network cognimem cm1k • • openhardware.io

Protocole radio for new device Development • arduino raspberry radio protocole • • jaumard

15Online

11.7kUsers

11.2kTopics

113.0kPosts

How to make sense of Struct data received from Arduino in RPi via NRF24?
General Discussion • arduino raspberry pi rf24 • • nrf24_is_hard

💬 Temperature-Humidity-Pressure Sensor
OpenHardware.io • arduino temperature esp8266 sensor humidity raspberry pi esp32 pressure • • openhardware.io

Having trouble getting 2.0.1-beta running on Raspberry Pi2 as gateway and controller
Troubleshooting • raspberry serial gateway 2.0 • • micah

💬 Raspberry Pi gateway interface
OpenHardware.io • gateway nrf24l01+ domoticz raspberry • • openhardware.io

Gateways
Development • esp8266 raspberry pi serial gateway nano rpi tcp gateway mqtt gateway • • OldSurferDude

Handy Serial Gateway for testing.
Hardware • raspberry serial gatewayc • • Dheeraj

💬 CM1k Breakout Board -- Neuromorphic Chip
OpenHardware.io • arduino i2c breakout board neuromorphic general vision artificial neural network cognimem cm1k • • openhardware.io

Protocole radio for new device
Development • arduino raspberry radio protocole • • jaumard

15
Online

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Users

11.2k
Topics

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