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nRF52840 radiofrequency mesh network setup.

Roe 5 Nov 2018, 11:28 last edited by

Hi, everyone. I am new here and sure am glad i got to know about this site just 5 minutes ago (via random net search). I need help. I need to set up a 9 router mesh network with multi-hopping capabilities using the Nordic nRf52840 SoC. I joined the Nordic forum in the hope that i will get help. Suffice to say i have failed dismally to set up the network. I can do the examples they have on the site but when i ask for step by step instructions, someone always points out to me that they can't provide that for me. I know very little about C/C++ programming, so i cannot get past the examples. My project involves collecting and analyzing latency, hopping and packet delivery ratio data to determine the performance and reliability of the network. You tube is not detailed enough. Please, i need help as soon as possible. Thank you in advance.

P.S. This project was started by someone else and i have been assigned to it and i cannot say no as that will lead to a fail. Please help me.
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@andriej Hi, I had problem using the main branch mysensors/Raspberry, that because of the bit-field struct (header_s) in Sensor.h They will get packed in different order on the arduino compared to the RPi (at least with my compiler, gcc). In order to fix this I created the 1.4dev branch. It uses full bytes instead of the bit-fields, but you need (of cause) to compile both the sensors (arduino) and the gateway (RPi) using the 1.4dev branch. We need to fix this in the main branch later on (and use the same files as in mysensors/Arduino/libraries/MySensors)
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It has been taking over by CodeGarage to assure continuation
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Old topic, I know. Did anything ever come of this? I'm also thinking it would be easy & cheap to get the espnow working as a transport layer. I found this: https://www.mysensors.org/apidocs-beta/classESPNOW.html But it goes above my head and abilities when it comes to code.
Why is the output of ACS712 current measurement module unchanged?
General Discussion • mysensors • 19 Jul 2021, 09:09 • Tessie T 29 Mar 2025, 16:30

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@ZenBlizzard in case you are measuring the output with a multimeter, you will get an averaged level, since AC current waveform should be sinusoidal and overlapped with the Vcc/2->2.56V in your case. To measure the current you need a decently high sampling and some math. #define SENSITIVITY 66 // mV/A const float readings = 5; const float alpha = 2.0 / (2 * readings + 1); for (ifor = 0; ifor < 250; ifor++) { // Voltage voltageSampleRead = analogRead(V) * vccRead / 1023 - vccRead / 2; /* read the sample value including offset value*/ voltageSampleSum = voltageSampleSum + sq(voltageSampleRead); /* accumulate total analog values for each sample readings*/ voltageSampleOffsetSum = voltageSampleOffsetSum + voltageSampleRead; // Current currentSampleRead = analogRead(I) * vccRead / 1023 - vccRead / 2; /* read the sample value including offset value*/ currentSampleSum = currentSampleSum + currentSampleRead * currentSampleRead; /* accumulate total analog values for each sample readings*/ currentSampleOffsetSum = currentSampleOffsetSum + currentSampleRead; wait(1); } voltageMean = voltageSampleSum / ifor; /* calculate average value of all sample readings taken*/ voltageOffset = voltageSampleOffsetSum / ifor; reading = (sqrt(voltageMean) - voltageOffset) * 230.0 / 1.0; // read voltage / reported voltage. voltage = round_to_dp(alpha * reading + (1 - alpha) * voltage,1); Serial.println(voltage); if (voltage < 25) voltage = 0; currentMean = currentSampleSum / ifor; /* calculate average value of all sample readings taken*/ currentOffset = currentSampleOffsetSum / ifor; reading = (sqrt(currentMean) - currentOffset) / SENSITIVITY * 1000 - currentZeroOffset; // subtract no load current. if (reading < 0) reading = 0; current = round_to_dp( alpha * reading + (1 - alpha) * current,2);
Which device I have to use to connect with accelerometer before connecting to my pc?
General Discussion • 24 Jan 2023, 17:16 • Yada Kijsathan 16 Mar 2025, 20:17

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16 Mar 2025, 20:17

When connecting an accelerometer to your PC, consider its communication protocol (I2C or SPI) and the appropriate interface device, like a microcontroller (e.g., Arduino). You may also need additional hardware for voltage adjustment or signal conditioning, depending on the sensor’s specifications.
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It looks like duplicate email notifications may be linked to system settings or preferences. Have you noticed if the issue happens after specific actions or changes? Investigating your notification settings might shed some light

nRF52840 radiofrequency mesh network setup.

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General Discussion • 24 Jan 2023, 17:16 • Yada Kijsathan 16 Mar 2025, 20:17

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General Discussion • 6 Feb 2023, 16:15 • Jodaille 27 Mar 2025, 06:07

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nRF52840 radiofrequency mesh network setup.

Suggested Topics

Update RF24 library to latest version Bug Reports • 23 Mar 2014, 23:37 • andriej 24 Mar 2014, 22:52

What is actual status of MySensors? General Discussion • 18 days ago • perfectom 10 days ago

ESP-NOW General Discussion • 220v i recently noticed that expres between esp8266 and es[p which allows direct conection if has released esp-now • 22 Apr 2018, 05:58 • NeverDie 17 Feb 2025, 22:24

Why is the output of ACS712 current measurement module unchanged? General Discussion • mysensors • 19 Jul 2021, 09:09 • Tessie T 29 Mar 2025, 16:30

Which device I have to use to connect with accelerometer before connecting to my pc? General Discussion • 24 Jan 2023, 17:16 • Yada Kijsathan 16 Mar 2025, 20:17

Email notifications received twice General Discussion • 6 Feb 2023, 16:15 • Jodaille 27 Mar 2025, 06:07

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Update RF24 library to latest version
Bug Reports • 23 Mar 2014, 23:37 • andriej 24 Mar 2014, 22:52

What is actual status of MySensors?
General Discussion • 18 days ago • perfectom 10 days ago

ESP-NOW
General Discussion • 220v i recently noticed that expres between esp8266 and es[p which allows direct conection if has released esp-now • 22 Apr 2018, 05:58 • NeverDie 17 Feb 2025, 22:24

Why is the output of ACS712 current measurement module unchanged?
General Discussion • mysensors • 19 Jul 2021, 09:09 • Tessie T 29 Mar 2025, 16:30

Which device I have to use to connect with accelerometer before connecting to my pc?
General Discussion • 24 Jan 2023, 17:16 • Yada Kijsathan 16 Mar 2025, 20:17

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General Discussion • 6 Feb 2023, 16:15 • Jodaille 27 Mar 2025, 06:07

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