¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. QRPLabs
  2. Topics

Product question regarding U3S/U3B custom code additions

 

I wish to connect an external DAQ chip and associated circuitry to the U3B's onboard Atmel 328 to perform some operations and measurements the 328's internal ADCs can't do (I'm assuming that the U3B will use the same microcontroller as U3S). ?Is there a way to add a piece of user's code that the unit will call periodically? ?If yes, is there a way to save some text containing the data such that it can be incorporated into the transmitted message?
 

Hi
?
I wish to connect an external DAQ chip and associated circuitry to the U3B's onboard Atmel 328 to perform some operations and measurements the 328's internal ADCs can't do (I'm assuming that the U3B will use the same microcontroller as U3S).? Is there a way to add a piece of user's code that the unit will call periodically?? If yes, is there a way to save some text containing the data such that it can be incorporated into the transmitted message?

It is not available in the U3S.?

In the U3B (balloon tracker version) the I2C bus is available. Any device which can be connected to the I2C bus, will be readable by the program and you can insert text from the data, into the transmitted message. In this way the U3B can use data from lots of other devices, not just the onboard temperature sensor.

So, if your DAQ has I2C communication then everything is fine. If not, then I suggest the best way would be a tiny microcontroller to convert the output of your DAQ to I2C data.?

73 Hans G0UPL

1 - 2 of 2