Sim7020: Difference between revisions
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I plan to experiment with this kind of network connectivity for perhaps a bat activity monitor or air quality monitoring. | I plan to experiment with this kind of network connectivity for perhaps a bat activity monitor or air quality monitoring. | ||
Update: this escalated quickly ... the NB-IOT stuff already seems dead: | Update: this escalated quickly ... the NB-IOT stuff at t-mobile already seems dead: | ||
The t-mobile website has an outdated certificate, otherwise seems down (error 503). | The t-mobile website has an outdated certificate, otherwise seems down (error 503). | ||
Revision as of 17:35, 23 January 2021
Project Sim7020 | |
---|---|
SIM7020 NB-IOT modem | |
Status | In progress |
Contact | bertrik |
Last Update | 2021-01-23 |
What
This page is about the SIM7020 NB-IOT module.
I plan to experiment with this kind of network connectivity for perhaps a bat activity monitor or air quality monitoring.
Update: this escalated quickly ... the NB-IOT stuff at t-mobile already seems dead: The t-mobile website has an outdated certificate, otherwise seems down (error 503).
Hardware
I wired it up like this:
SIM7020 | USB serial | Remark |
---|---|---|
G | nc | looped to SIM7020-K |
R | TXD | |
T | RXD | |
K | nc | looped to SIM7020-G |
V | 3V3 | |
G | GND | |
S | DTR |
References
I followed roughly this guide:
- Ordered a SIM7020 and a starter kit, see https://www.hackster.io/voske65/arduino-nb-iot-with-sim7020-and-t-mobile-027f8f
- Account page: https://portal.iot.t-mobile.nl/auth/login