# The LimeNET Micro campaign is live!

**URL:** <https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495>\
**Category:** LimeNET\
**Created:** [17 October 2018 10:46 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495 "2018-10-17T10:46:47Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [17 October 2018 10:46 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/1 "2018-10-17T10:46:48Z")

</div>

Hi All,

Just a quick heads-up that the crowdfunding campaign for LimeNET Micro — a low cost, fully standalone SDR platform with integrated GPS — is now live.

> **[LimeNET Micro](https://www.crowdsupply.com/lime-micro/limenet-micro)**
>
> A software-defined radio platform with integrated processor for creating self-contained wireless networks

We haven’t made a formal announcement yet, but wanted the community to hear first as there are limited early birds.

Cheers,

Andrew

---

<div class="post-metadata">

**Author:** ![9a4db](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/9a4db/32/2675_2.png) [@9a4db](https://discourse.myriadrf.org/u/9a4db)\
**Post date:** [17 October 2018 14:02 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/2 "2018-10-17T14:02:21Z")

</div>

@andrewback  
Few questions if possible 😊

1. A small SO-DIMM form factor board plus ribbon cable to enable use of a classic/consumer Raspberry Pi  
is expected to be available. Any dependency on LimeNET Micro firmware that limits other unix small  
footprint single board computers to be used?

2. In Comparison table bellow:  
RF Bandwidth 61.44 MHz 30.72 MHz **0.27 MHz**  
and  
Sample Rate 61.44 MSPS 30.72MSPS **1.0 MSPS**  
Any other reason in LimeNET Micro hardware, except limiting processing power of RPI 3 ?

Regards  
Dj

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [17 October 2018 14:11 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/3 "2018-10-17T14:11:11Z")

</div>

> [@9a4db](#):
>
> A small SO-DIMM form factor board plus ribbon cable to enable use of a classic/consumer Raspberry Pi
> 
> is expected to be available. Any dependency on LimeNET Micro firmware that limits other unix small
> 
> footprint single board computers to be used?

Nope.

> [@9a4db](#):
>
> Any other reason in LimeNET Micro hardware, except limiting processing power of RPI 3 ?

I think SPI is used for sample interface and so will also limit throughput. As you might gather this is aimed at narrowband applications.

---

<div class="post-metadata">

**Author:** ![M0GLO](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/m0glo/32/999_2.png) [@M0GLO](https://discourse.myriadrf.org/u/M0GLO)\
**Post date:** [17 October 2018 14:42 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/4 "2018-10-17T14:42:03Z")

</div>

Ordered my 5, thx!

---

<div class="post-metadata">

**Author:** ![9a4db](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/9a4db/32/2675_2.png) [@9a4db](https://discourse.myriadrf.org/u/9a4db)\
**Post date:** [17 October 2018 16:13 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/5 "2018-10-17T16:13:02Z")

</div>

> [@M0GLO](#):
>
> Ordered my 5, thx!

No less than that worth of efforts 😄

---

<div class="post-metadata">

**Author:** ![M0GLO](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/m0glo/32/999_2.png) [@M0GLO](https://discourse.myriadrf.org/u/M0GLO)\
**Post date:** [17 October 2018 16:15 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/6 "2018-10-17T16:15:34Z")

</div>

I got plans for these little puppies. 🙂

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [17 October 2018 17:08 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/7 "2018-10-17T17:08:46Z")

</div>

Can’t help but wonder what! DF?

---

<div class="post-metadata">

**Author:** ![9a4db](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/9a4db/32/2675_2.png) [@9a4db](https://discourse.myriadrf.org/u/9a4db)\
**Post date:** [17 October 2018 17:45 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/8 "2018-10-17T17:45:07Z")

</div>

I am wondering can this unit perform good enough for my DF application…  
because of:

> [@9a4db](#):
>
> RF Bandwidth 0.27 MHz  
> and  
> Sample Rate 1.0 MSPS

This can be enough for analog and digital 406 ELT devices  
but for people with cell phones out of regular network, not.

---

<div class="post-metadata">

**Author:** ![martywittrock](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/martywittrock/32/66_2.png) [@martywittrock](https://discourse.myriadrf.org/u/martywittrock)\
**Post date:** [17 October 2018 18:47 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/9 "2018-10-17T18:47:09Z")

</div>

@andrewback - Andrew,

And toward that narrowband application I would gather that this means on-channel transceiver operations in any mode? Lemme know - -

73 de Marty, KN0CK

---

<div class="post-metadata">

**Author:** ![mzs](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/mzs/32/2678_2.png) [@mzs](https://discourse.myriadrf.org/u/mzs)\
**Post date:** [17 October 2018 18:48 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/10 "2018-10-17T18:48:08Z")

</div>

```
			 LimeSDR-USB	LimeSDR-Mini	LimeNET-Micro
Interface	USB 3.0 USB 3.0 N/A

```

How come the interface is not listed as Ethernet. Since one could potentially be provided by the RPi CM3, well the USB 2.0 HS port (using a USB 10/100 NIC, which I am guessing is using one of the Microchip LAN95xx chips). Or would saying that, just be confusing, since it would not be the intended mode of operation.

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [17 October 2018 18:51 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/11 "2018-10-17T18:51:59Z")

</div>

> [@martywittrock](#):
>
> And toward that narrowband application I would gather that this means on-channel transceiver operations in any mode? Lemme know - -

Yep, it’s basically an integrated LimeSDR + Raspberry Pi + GPSDO. Should make a nice remote ham radio transceiver.

---

<div class="post-metadata">

**Author:** ![9a4db](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/9a4db/32/2675_2.png) [@9a4db](https://discourse.myriadrf.org/u/9a4db)\
**Post date:** [17 October 2018 20:19 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/12 "2018-10-17T20:19:41Z")

</div>

I am in… (very few left on early bird positon)  
Not sure that is good enough for my application.  
Now can find out that 😉

---

<div class="post-metadata">

**Author:** ![mzs](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/mzs/32/2678_2.png) [@mzs](https://discourse.myriadrf.org/u/mzs)\
**Post date:** [17 October 2018 22:59 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/13 "2018-10-17T22:59:46Z")

</div>

If you use a Raspberry Pi CM3 (4GB eMMC flash onmodule) instead of a CM3L (no onmodule flash), will the flash in the LimeNET Micro be bypassed ?

The reason I’m asking is because when it comes to OS’es with flash storage I have a long history of killing them with tiny files.

EDIT: Ignore my question, all I needed was a higher resolution image ( [https://www.crowdsupply.com/img/801a/limenet-micro-bottom-with-pi-1\_jpg\_open-graph.jpg](https://www.crowdsupply.com/img/801a/limenet-micro-bottom-with-pi-1_jpg_open-graph.jpg) ) to see there there is a MicroSD slot for the CM3L, and I also missed that it was mentioned in the Connectivity details. I mistakenly thought that there was a eMMc chip soldered to the LimeNET Micro PCB.

---

<div class="post-metadata">

**Author:** ![yindra](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/yindra/32/1901_2.png) [@yindra](https://discourse.myriadrf.org/u/yindra)\
**Post date:** [17 October 2018 23:38 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/14 "2018-10-17T23:38:03Z")

</div>

> [@andrewback](#):
>
> Yep, it’s basically an integrated LimeSDR + Raspberry Pi + GPSDO. Should make a nice remote ham radio transceiver.

How will [SDRAngel](https://github.com/f4exb/sdrangel) and similar interface? I am confused because SDRAngel can generate different modes, but it depends on an interface such and HDMI or TCP and the Raspberry Pi Compute only has USB 2.0 ([datasheet](https://www.raspberrypi.org/documentation/hardware/computemodule/datasheets/rpi_DATA_CM_2p0.pdf)).

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [18 October 2018 06:02 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/15 "2018-10-18T06:02:15Z")

</div>

> [@mzs](#):
>
> If you use a Raspberry Pi CM3 (4GB eMMC flash onmodule) instead of a CM3L (no onmodule flash), will the flash in the LimeNET Micro be bypassed

I believe so, but @Zack could confirm.

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [18 October 2018 06:03 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/16 "2018-10-18T06:03:18Z")

</div>

> [@yindra](#):
>
> How will SDRAngel and similar interface? I am confused because SDRAngel can generate different modes, but it depends on an interface such and HDMI or TCP and the Raspberry Pi Compute only has USB 2.0 (datasheet).

LimeNET Micro has an Ethernet port, which supports passive power-over-Ethernet also. So with SDRangel you would need to use the RESTful / web interface.

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [27 October 2018 07:10 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/17 "2018-10-27T07:10:01Z")

</div>

Thought it worth noting here a few updates that have been made to the design:

- It now will have standards compliant active PoE
- USB will be used for the Raspberry Pi Compute Module \<\> Transceiver interface, which means higher bandwidth and sample rate (limited by RPi CM - figures TBC)
- Connectors added for both the official RPi Touch Screen display and Camera

> **[Increased Bandwidth, Plus Camera and Display Connectors](https://www.crowdsupply.com/lime-micro/limenet-micro/updates/increased-bandwidth-plus-camera-and-display-connectors)**
>
> LimeNET Micro was originally designed with narrowband applications in mind, such as GSM and various IoT air interfaces. For this reason and so as to also keep the Raspberry Pi Compute Module USB entirely free for other uses, the decision was made to...

---

<div class="post-metadata">

**Author:** ![9a4db](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/9a4db/32/2675_2.png) [@9a4db](https://discourse.myriadrf.org/u/9a4db)\
**Post date:** [27 October 2018 14:54 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/18 "2018-10-27T14:54:33Z")

</div>

This is good news for my application…

---

<div class="post-metadata">

**Author:** ![knGyCVGR](https://avatars.discourse-cdn.com/v4/letter/k/3d9bf3/32.png) [@knGyCVGR](https://discourse.myriadrf.org/u/knGyCVGR)\
**Post date:** [10 November 2018 19:32 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/19 "2018-11-10T19:32:47Z")

</div>

Hi @andrewback,

I just backed the project, looks like a great development platform! Is there any update on what kind of sample rate we can expect from the micro? Is the RPi USB interface going to be used for anything other than transceiver interface (should get us close to ~~30MSPS~~ 15MSPS Duplex throughput)?

Thanks!

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [11 November 2018 15:31 UTC](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495/20 "2018-11-11T15:31:20Z")

</div>

RPi USB will be shared with Ethernet, just as it is on all Raspberry Pi boards, since the Broadcom SoC only has a single USB 2.0 port. No official figure on throughput yet, but will see if we can confirm this.

[Next page](https://discourse.myriadrf.org/t/the-limenet-micro-campaign-is-live/3495.md?page=2)