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LM35 temp sensor, sensitive to radiation or?

Efflon 28 Mar 2017, 21:47 last edited by

I got a bunch of LM35 sensors (3-pin) from Aliexpress and have some trouble with them reporting to high temperature readings. When connected to my breadboard with 15cm cables I had "normal" readings 20-21C. Now when I'm assembling a wemos D1 mini with a OLED in a tiny box I get 26C even with the sensor 2cm outside and with a heat shield (alu-foil and electrical tape). Anyone knows if this sensor is sensitive to e.g. wifi signals or just IR from the esp8266?
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I'm having the same / a simular issue of temperature related readings, but at a different temperature level (for me it must be > 14 degree). I massure the dew point as well (temperature = orange, dew point = yellow). It looks to be more related to water in the air than only to temperature. @zboblamont have you been finally been able to find a solution?
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I've found that: char *protocolMyMessage2Serial(const MyMessage &message) { (void)snprintf_P(_fmtBuffer, (uint8_t)MY_GATEWAY_MAX_SEND_LENGTH, PSTR("%" PRIu8 ";%" PRIu8 ";%" PRIu8 ";%" PRIu8 ";%" PRIu8 ";%s\n"), message.getSender(), message.getSensor(), message.getCommand(), message.isEcho(), message.getType(), message.getString(_convBuffer)); return _fmtBuffer; } We put in the print "message.getEcho()", but this isn't echoed message. I think we should put "message.getRequestEcho()" here.
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LM35 temp sensor, sensitive to radiation or?

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LM35 temp sensor, sensitive to radiation or?

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