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💬 SMDnRF24_adapter

openhardware.io last edited by openhardware.io

https://www.openhardware.io/view/297/SMDnRF24_adapter
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emc2 Hardware Contributor last edited by

Forgot about this guy... Updated the project a little, the PCB now have footprints for both normal and PA+LNA modules.
The old boards are still available on the github repository if needed.

Even with the extra length added to the PCB with the dual footprint, it is overall still smaller than a regular non SMD NRF24L01 module.
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@dzungpham0703 I buy them on Aliexpress: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20180706102504&SearchText=HTTM If you apply hot air it is easy to take off the white "double sided tape" and the plastic.
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The choice of MOSFET can be tricky. Seems that irlz44n was discontinued so you may need to find one adapted to the voltage and current you want to handle. In all the cases you need to get a logic MOSFET too, meaning that they are fully open usually around 1 to 3V. Also I'm sort of confused as it seems to me that L7812CV is a Voltage regulator, not a MOSFET. So if you are actually using that in the MOSFET spot it will definitively not work. Especially if you are handling high current or voltage I would recommend using one from a reputable source for your MOSFET, I recently switched from mouser / digikey / aliexpress to mostly use http://www.arrow.com as you get free regular shipping, event if you order a couple of components (no affiliation to them whatsoever).
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@acb Hi @acb and others, regarding "Do you know if there is a version of this board that is pad-compatible with the C-versions of these HopeRF RFM69s before I go searching? (Since I believe the C-versions are also pad-compatible with the RFM95s…)" - did you find any alternative? I'm in the same boat looking for an adapter from NRF24 to the footprint of RFM69*C = RFM95/96. Thanks, Joost
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I've a sensor running with naked 328p, 3.3V, 8 MHz internal Osz and DHT22. Maybe I'm lucky?!
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@alexsh1 Hi Alex, I tested the Sanity check on the the Arduino sensor node, and status came back OK. However I could get this to work on the Raspberry Pi, seems like this function is not yet supported. At least I couldn't find any info on it using the "./configuration -h". I don't have a AMS1117 available so I can test that. I connected my Arduino Nano and NRF24L01+ to the Raspberry Pi via USB, that would really well. So I might just use this solution instead as I see little benefit of connecting the NRF24L01 directly to the GPIO pins on the Raspberry Pi. Next step is to start building some battery powered sensors that I can use, and get MyController setup properly.
Question about NRF24L01+ and signal issues
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@xefil said: Thanks @hek and @kalle Sorry, but I'm not good to understand the debug of the scanners. In the RF24/examples/scanner/ the range is between 0000->->->7777 Those are the high order nibble of the channel byte. The low order nibble is just below it. The 125 channel numbers are printed "sideways" in hex. I would expect a list of channels between 1 and 13. You're thinking of wi-fi. This isn't wi-fi. In the second scanner (wiFi scanner found on arduino forum) It's more accurate. It seems noisy between channel 3 and 9. So, the questions are: What does default channel 76 mean? 2476Mhz? yes Would mean above channel 13, on channel 14. In this case these channels are free, based on the results. I've seen I can use: #define RF24_CHANNEL 76 //RF channel for the sensor net, 0-127 How to interpret the scanners result? Most of all the "RF24/examples/scanner/" which has an output I cannot identify in a channel. The bigger the number below the channel, the more active it is. I would like to understand the result and so choose the right channel, not only trying without knowing what I'm doing Thanks a lot for the support! Simon

💬 SMDnRF24_adapter

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💬 SMDnRF24_adapter

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