SIM_DET pin in use or not ?

RE: SIM_DET pin in use or not ?

Albrecht Markus Schellenberger — Mon, 07 Feb 2022 07:50:28 GMT

[quote user="J Jarmuzek"]Can you tell me what version it is ? Mine is the 1.4.0 and the SIM_DET is connected :[/quote]

Good point, Jean! This was changed in the latest version of the Thingy:91, v1.6.0.

Regards,

Markus

RE: SIM_DET pin in use or not ?

J Jarmuzek — Fri, 04 Feb 2022 09:58:45 GMT

Hi,

Can you tell me what version it is ? Mine is the 1.4.0 and the SIM_DET is connected :

Regards,

Jean

RE: SIM_DET pin in use or not ?

Albrecht Markus Schellenberger — Thu, 03 Feb 2022 11:37:29 GMT

[quote user="J Jarmuzek"]The problem is that on the thingy91 this pin is connected to the sim holder which have a switch mounted. It can be disconnected by removing an R0 but I don't undstand why the design would be made this way if the SIM_DET is not in use in every versions of the nRF9160.[/quote]

Thanks for your feedback, Jean!

I’m not a hardware expert, but to me it looks like that SIM_DET is not connected neither on the Thingy:91, see picture below.

Regards,

Markus

RE: SIM_DET pin in use or not ?

J Jarmuzek — Thu, 03 Feb 2022 11:07:13 GMT

Hi, thanks for your answer

The problem is that on the thingy91 this pin is connected to the sim holder which have a switch mounted. It can be disconnected by removing an R0 but I don't undstand why the design would be made this way if the SIM_DET is not in use in every versions of the nRF9160.

Regards,

Jean

RE: SIM_DET pin in use or not ?

Albrecht Markus Schellenberger — Thu, 03 Feb 2022 09:27:34 GMT

Hello,

according to the Pin assignments of the nRF9160 Product Specification, SIM_DET is not used and needs to be left floating.

Regards,

Markus