Decent Accuracy Temp&Humidity Sensors?
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Been about 6-8 months since I have been active here, busy with other house work and such.
Looking to update/make new sensors, was looking at the Senseboard and its integrated Si7021, I like the accuracy range it provides. Are people using these on their boards? I don't have much use right now for battery powered, are there any other options for low cost, good precision temperature and humidity? I don't like the cost of the DS22's at like 6+ bucks a pop. Are the Si a better choice? Just looking for cost effective, high accuracy.
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@NotYetRated On eBay, the si7021 and dht22 are about the same cost ~ $3.25 - $3.50 USD. The si7021 are better for low or battery power @ 1.9 - 3.6V while the dht22 range is 3.3 - 5.5V. The si7021 is also much smaller package @ 3x3mm.
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Also take a look at HTU21D....
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I was wondering in an other post if anyone had some experience (accuracy, easy to use etc) with BME280 (tep/hum and baro) http://www.ebay.com/itm/401000227934
Mine is still on the way but hopefully will see in a few weeks.
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I'm using BME280 (from aliexpress), very good and accurate sensor. But sensor price is not comfortable for me.
Easy to use (I'm using adafruit bme280 libraries with MySensors).
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Good to know it's accurate.
I agree the price is still a little steep and I would not put this one everywhere. But for a weather station project it's nice to have everything in one sensor.
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@ahhk https://www.bosch-sensortec.com/de/homepage/products_3/environmental_sensors_1/bme280/bme280_1
Average current consumption (1Hz data refresh rate)
1.8 μA @ 1 Hz (H, T)
2.8 μA @ 1 Hz (P, T)
3.6 μA @ 1 Hz (H, P, T)
H - humidity, P - pressure, T - temperature0.1 μA in sleep mode
Supply voltage 1.71 - 3.6 V
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very NICE
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@robosensor said:
@ahhk https://www.bosch-sensortec.com/de/homepage/products_3/environmental_sensors_1/bme280/bme280_1
Average current consumption (1Hz data refresh rate)
1.8 μA @ 1 Hz (H, T)
2.8 μA @ 1 Hz (P, T)
3.6 μA @ 1 Hz (H, P, T)
H - humidity, P - pressure, T - temperature0.1 μA in sleep mode
Supply voltage 1.71 - 3.6 V
I also failed into this trap in fact, bme280 consumption in NORMAL mode is 450-600ua
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