[Ground-station] Prototype BOM questions

Wally Ritchie wally.ritchie at gmail.com
Tue Mar 26 14:15:23 EDT 2019


The ESP32 is a solid part. I have hundreds of them deployed in IoT devices.
It's the go part to add anykind of WiFi or BT. I have battery powered WiFi
devices that last for months on a single battery (taking measurements every
minute and reporting to the cloud every hour). The only disappointment at
the moment is the BT modes take a lot more power than possible - this is
likely to change as the proper power management is implemented.

The toolchain is literally fantastic. The most solid one I've ever used.

Note this module is FCC approved.

There are some variations appearing now with external antenna and more
memory. Also FCC approved.





On Tue, Mar 26, 2019 at 2:02 PM Michelle Thompson via Ground-Station
<ground-station at lists.openresearch.institute> wrote:

> I think Wally has experience with the ESP32 as well. I have used ESP32 for
> some minor Burning Man projects. The tools and experience has improved over
> the past year or so.
>
> -Michelle W5NYV
>
>
>
>
> On Tue, Mar 26, 2019 at 10:45 AM Bruce Perens <bruce at perens.com> wrote:
>
>> I really like the ESP32 and have gotten it to work well as a WiFi access
>> point and WiFi station at the same time (necessarily on the same channel).
>> It also has Bluetooth, which I haven't tried, and comes in a
>> pre-FCC-approved module for $5 or less Q/1. It lets you implement a web
>> server and thus interface to *everything.*
>>
>> On Tue, Mar 26, 2019 at 10:30 AM Michelle Thompson via Ground-Station
>> <ground-station at lists.openresearch.institute> wrote:
>>
>>> Renewing work this week on the prototype BOM. I think the 8001s without
>>> LNA (8001b) is the right choice, using the recommended reference design
>>> (from Lime) to incorporate external higher performance LNAs.
>>>
>>> Scott Cowling is working on a “data engine”, or the digital part of the
>>> board. I’m looking at the LMS8001 companion board for what else we need.
>>>
>>> Interested in hearing from Steve Hicks and Wally Ritchie about anything
>>> else we might want or need. 8001 is a translator, meaning we need an RFIC.
>>>
>>> (Bluetooth in there somewhere to talk to Trans-Ionospheric badges needs
>>> to not get forgotten.)
>>>
>>> -Michelle W5NYV
>>>
>>>
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