M5Stack ENV IV

Unverified

These settings follow the sensor datasheets and the built-in drivers but haven’t been checked on an ENV IV with the current firmware yet.

Sensors	SHT40 (temperature, humidity) and BMP280 (temperature, pressure)
Connection	GROVE I2C (SHT40 at 0x44, BMP280 at 0x76)

Template

First apply your board's template from its board page, so the I2C pins are set. Then paste this into the Board Template box on the node's Templates page, Preview and Apply. It sets only this add-on's settings and works on any chip. See Add-on templates.

{"settings":{"SHT_I2c_Bus":1,"BMP280_I2c_Bus":1,"BMP280_I2c":"0x76"}}

Copy

Notes

• Plug it into the GROVE port. The Atom S3 Lite and NanoC6 board templates set GROVE as I2C bus 1. On another board, set I2C bus 1’s SDA and SCL pins on the Hardware page first.
• Applying the template needs firmware newer than v5.0.0b2 (ESPresense#2555). Older firmware asks for a "chip"; set the three values on the Hardware page instead.
• The SHT40 publishes temperature and humidity; the BMP280 publishes bmp280_temperature and bmp280_pressure. The SHT40’s temperature is the more accurate of the two.
• Earlier firmware needed a separate M5Stack driver for this unit (ESPresense#2242). The current BMP280 and SHT drivers handle it directly.