I connected a DS18B20 to my node. The node runs https://github.com/matthijskooijman/arduino-lmic and works fine. If I load a basic test sketch for the DS18B20 on the same node hardware (so ignoring the RFM95W) it works fine too and I get good temperature readings. When I merge the two sketches the …

@TijnOnlijn Hi I used a Arduino UNO with a Dragino shield (V1.3) and a DS18B20 (with 4k7 resistor) and I had NO problem running the example ttn-abp and the 18B20 code added to it.

I worked on this together with @TijnOnlijn and we managed to solve the issue. We initially used pin 10 on the Arduino for the DS18B20 and it appeared this was also used by the arduino_lmic but we didn’t connect it to the RFM95W. After switching to pin 9 it worked like a charm.

Am trying with 4 DS18B20 and am able to collect data of 3 and send, but the problem is, the first data is wrong which should be 26.75 I get only 6.75. Code is as below. sensors.requestTemperatures(); Serial.print("Temperature of 1st IC is: "); tempC = sensors.getTempCByIndex(0); temp = tempC *…

You should shift (>> and <<) by 8 in all cases. Not 2, 4, 6 and 8. The number of bits to shift depends on the ‘word’ length which is a byte == 8 bits, not on position in the array.

You should not use pin 10 (default Slave Select) as in INPUT (even if you define another slave select pin). You can use it as an universal OUTPUT, but then you have to assign it as output before initializing the SPI bus, according to comments in SPI.cpp void SPIClass::begin() { // Set direction …

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Conflict between RFM95W/LMIC and DS18B20 temperature

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