Add variant support: Arduino Nesso N1 #1117

webash · 2025-11-18T22:48:53Z

The Arduino Nesso N1 is a tiny wee device absolutely feature packed, based on ESP32-C6 and SX1262.

ℹ️ Disclaimer: I'm more an infrastructure guy that likes to code, so most of this is a bit hacky and me trying my best from scraps I've found in this repo. I haven't worked in C/C++ for more than a decade (other than random patches to OSS code), and I've only spent a few hours over the last few days. So all feedback completely welcome. Also feel free to do whatever is required to bring this up to scratch, as I'm not precious.

The below was not generated with an LLM, I just like emojis.

✅ Things I've tested and work:

Build, upload, etc
Initial boot of the device in blank state, ready for first connection with default PIN
Connection to device with companion apps (web, Android)
Configuration of device
Sending and receiving messages [locally, I'm not close enough to any repeaters on the mesh that its little antenna seems to be able to reach, but that's a problem even for my other devices]
TX LED works
Telemetry of battery percentage / voltage
- I've only done an override for getBattMilliVolts(), I haven't dived deeper to be sure that the percentage is valid

❎ Not yet tested:

Repeater firmware

⚠️ Known issues:

It seems to reboot periodically after some time. ~~I haven't been able to reproduce it reliably while in debug mode to see what comes across the serial logger before it dies; more time needed~~.
- Seems to have been caused by this; setting up the AW32001E properly seems to have resolved it in initial testing of this commit.
With minimal examples out there for such a new board, I can't quite figure out if the charging enable code is correct. So I'm not really sure if the device is properly charging.

ToDo:

Buttons
Screen
- I've started some work here, but it seems the existing ST7789 examples helpers in the repo are for very specific devices, so I'll probably have to write my own - and... I'm not sure I'm capable of that right now.
Buzzer
Telemetry addition: a template / example to allow for additional sensors via the grove and QWIIC ports
Periodic LED pulse to know device is still on while the screen doesn't work

Typo fix

added pyMC_core to meshcore projects mentioned Cisien's meshcoretomqtt fork from Andrew-a-g updated Coding Rate explanation and recommendation updated radio presets and added how to update presets listed in the app

Update faq.md

…t c->push_failures

…uctions

Fix debug log: use c->extra.room.push_failures instead of c->push_failures

Change source of truth to this repo, remove whitespace

# Conflicts: # docs/payloads.md

ripplebiz · 2025-11-19T04:41:55Z

Thanks for the contribution. Can you please change the base branch from main to dev please.

variants/arduino_nesso_n1/ArduinoNessoN1Board.cpp

webash · 2025-11-19T16:29:10Z

Thanks for the contribution. Can you please change the base branch from main to dev please.

The base branch or the branch I'm PRing into? or both?

ripplebiz · 2025-11-21T08:41:44Z

Thanks for the contribution. Can you please change the base branch from main to dev please.

The base branch or the branch I'm PRing into? or both?

The branch you are wanting to merge into.

webash · 2025-11-22T00:03:11Z

Thanks for the contribution. Can you please change the base branch from main to dev please.

The base branch or the branch I'm PRing into? or both?

The branch you are wanting to merge into.

Done - but I'll change the main .cpp file to be target.cpp per your review before any merge. Although I notice that because I forked off main, I've got a bunch of additional commits in this PR now suggesting main was ahead of dev?

webash · 2025-11-22T01:47:06Z

Any advice for debugging random reboots on this esp32 platform? the serial logger manages to print "E" as if its about to print "ERROR:" but the board seems to reboot before the full transmission is received so I'm not sure what its erroring on.

EDIT: Turns out that output does come through sometimes and its is ESP-ROM:esp32c6-20220919 ... which I'm not clear on what that's coming from or what it means...

tyeth · 2025-11-22T03:34:19Z

It seems to reboot periodically after some time. I haven't been able to reproduce it reliably while in debug mode to see what comes across the serial logger before it dies; more time needed.

I've been seeing E BOD: Brownout detector was triggered occasionally in the serial console, but mainly it silently reboots. This is not using meshcore. Got battery charged + many good usb cables.
Probably worth checking and printing the boot reason a short while after each boot.

Looking at the datasheet it might be the watchdog timer of the battery charger (i2c address 0x49), register 0x05, bits 5:6, need setting to 0's.

I think "ESP-ROM:esp32c6-20220919" is just the boot message (compiled rom bootloader date), so after/as the reboot happened rather than the cause/error.

webash · 2025-11-23T21:32:30Z

@tyeth hrmm ok! I'm pretty new to all this - boot reason wasn't something I was aware of: but I'll give it a go - I remember seeing something about that in the code.

I've just seen a few of your other commits in other projects - its pretty hard building against a very recently released device, eh? I'm also trying to get a base config for the Nesso N1 in esphome...apparently I am a sucker for punishment.

tyeth · 2025-11-23T22:25:12Z

@webash definitely a sucker for punishment 😁 or more like living on the bleeding edge 🔪 🩸 , but the C6 is well supported.

The onboard battery charger doing a watchdog power reset (at 160s) had me for a bit, but it's disabled straight away if you use the m5unified library instead of manually use it. That previous message I updated to mention the register and datasheet.

webash · 2025-11-24T00:21:16Z

For anyone interested, here's my example esphome configuration file with most things rigged up: https://github.com/webash/esphome-devices-examples/blob/main/arduino-nesso-n1.example.yaml

ripplebiz · 2025-11-27T05:50:01Z

variants/arduino_nesso_n1/ArduinoNessoN1Board.cpp

+  MESH_DEBUG_PRINTLN("ArduinoNessoN1.begin(): Now high...");
+  digitalWrite(LCD_BACKLIGHT, HIGH);
+  digitalWrite(BEEP_PIN, HIGH);
+  delay(2000);


Does this delay need to be this long?

Absolutely not; this was just for testing to ensure that the device was waking - as without the screen on it wasn't clear that it was. It'll be gone before I intend for anything to be merged.

ripplebiz · 2025-11-27T05:59:24Z

README.md


 ## Road-Map / To-Do

 There are a number of fairly major features in the pipeline, with no particular time-frames attached yet. In very rough chronological order:


Please reset the changes to these .md files. Looks like these diffs were inherited from the main branch.

Ah; yeah I forked from the main branch; so will see if I can rebase to dev

webash · 2025-11-29T21:20:16Z

@tyeth thanks for sharing what you did - clearing those appropriate bits seems to have done the trick and no more random reboots! Will test a bit longer before I celebrate too much, but seems good so far.

I'll take a look at the review next.

silverphish-io and others added 16 commits September 25, 2025 14:59

Update faq.md

816d4e2

Typo fix in faq and payloads

4e886bf

Update README.md

c8a6bcf

Merge pull request meshcore-dev#837 from silverphish-io/typo-fix

3dc04de

Typo fix

Update faq.md

f594f2c

added pyMC_core to meshcore projects mentioned Cisien's meshcoretomqtt fork from Andrew-a-g updated Coding Rate explanation and recommendation updated radio presets and added how to update presets listed in the app

Merge pull request meshcore-dev#869 from LitBomb/patch-19

86225cd

Update faq.md

Fix debug log: use c->extra.room.push_failures instead of non-existen…

6ee0b85

…t c->push_failures

Merge branch 'dev'

f5f5886

trim trailing whitespace, clarify repeater gps, remove outdated instr…

3e3fa5b

…uctions

Merge pull request meshcore-dev#871 from spacepc-de/fix-debug-log-field

da5dbcd

Fix debug log: use c->extra.room.push_failures instead of c->push_failures

Merge pull request meshcore-dev#809 from tekstrand/fixup

b2dcb06

Change source of truth to this repo, remove whitespace

Update README.md (RAK boards don't need pio patch)

8b68b5a

Merge branch 'dev'

9405e8b

# Conflicts: # docs/payloads.md

Arduino Nesso N1: variant initial

5ecfa61

Arduino Nesso N1: minor updates, placeholder ST7789 implementation

018d338

Arduino Nesso N1: move delay into debug

392a7a3

ripplebiz reviewed Nov 19, 2025

View reviewed changes

variants/arduino_nesso_n1/ArduinoNessoN1Board.cpp Outdated Show resolved Hide resolved

webash changed the base branch from main to dev November 22, 2025 00:01

Arduino Nesso N1: renaming main cpp

01cbaa0

Arduino Nesso N1: header/cpp rearrange + attempting to debug crash

ff3b84d

ripplebiz reviewed Nov 27, 2025

View reviewed changes

webash added 2 commits November 29, 2025 20:32

Add AW32001E init to disable WDT

ea65b6f

Arduino Nesso N1: Charging status

d8ee0f0


		## Road-Map / To-Do

		There are a number of fairly major features in the pipeline, with no particular time-frames attached yet. In very rough chronological order:

Add variant support: Arduino Nesso N1 #1117

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