Re: Teperature / humidity sensor recommendation
Posted:
Thu Nov 02, 2017 2:33 pmby bkenobi
I also see 2 variants. One uses I2c (4 pins) and the other SPI (6 pins). I've never used either but it appears I2c is easier to interface. Is there a reason to use SPI?
Re: Teperature / humidity sensor recommendation
Posted:
Thu Nov 02, 2017 2:48 pmby martinayotte
There is no real reason to choose SPI other than transfer speed which is useless for small sensors.
Speed transfer for LCD it is worth.
Re: Teperature / humidity sensor recommendation
Posted:
Thu Nov 02, 2017 7:04 pmby rudy
bkenobi wrote:Do you have a source that you'd recommend? I've been looking on eBay as I typically do but am having trouble sorting through the mislabeled BMP280 sensors and the ones where they are fake items (selling the sensor, but a fake flower for $0.01). I've read they should be around $2 but so far I'm only seeing $5-10. I was going to buy a few so the per unit price makes a bit of a difference.
https://www.aliexpress.com/item/3In1-BM ... 09083.htmlAs stated below. The BME280 is the sensor with humidity and temperature. I bought some SHT30 to try out.
https://www.aliexpress.com/item/SHT30-S ... 46226.html
Re: Teperature / humidity sensor recommendation
Posted:
Thu Nov 02, 2017 8:33 pmby bkenobi
Careful, that sensor for $0.75 is the BME280 (pressure only). Aliexpress does have the 4-pin BME280 for a better price than ebay but for some reason charges shipping on orders over 1 (free for a single though). I ordered 6 6-pin sensors this morning that are supposed to support both I2C and SPI.