Can Blues Notecard be used standalone, without any external microcontroller?
Wondering if I can directly connect a particle sensor to Notecard’s i2c bus, get PM2.5 readings at fixed interval and send to cloud.
If you don’t mind me tagging on another related question.
Can you use mojo without an external microcontroller? Using Notecarrier-F.
1 Like
Hi @ashgarg1 and @scavoj - welcome both of you to the Blues community!
Can Blues Notecard be used standalone, without any external microcontroller?
Wondering if I can directly connect a particle sensor to Notecard’s i2c bus, get PM2.5 readings at fixed interval and send to cloud.
You can use a Notecard without a host to perform some specific tasks. For instance, if you attach a BME280 or ENS210 sensor via I2C, the card.temp API and card.location.track API both will automatically append relevant sensor data to outbound Notes.
Also, if you search for “hostless” on the Blues docs, you’ll find some sample apps (accelerators) that function without a host.
Please note that the STM32 on the Notecard is NOT directly user-addressable though.
Can you use mojo without an external microcontroller? Using Notecarrier-F.
Yes, in fact the Mojo quickstart walks you through this without using a host.
2 Likes
Thanks @RobLauer. I was wondering similar how BME280 can work hostless, is it possible to extend Notecard’s firmware so that it can read data from an I2C particle sensor like PMSA003I?
@scavoj Thank you for pointing to Mojo Quickstart.
Also, just curious if Airnote uses an external microcontroller or is it “hostless”?
Hi @ashgarg1,
is it possible to extend Notecard’s firmware so that it can read data from an I2C particle sensor like PMSA003I?
Unfortunately no, it’s limited to the BME280 and ENS210 today.
Also, just curious if Airnote uses an external microcontroller or is it “hostless”?
Technically hostless, but with a custom version of Notecard firmware.
1 Like