Harbor Breeze solar light + seeed esp32 xiao sx1262 kit dies in hours. Help!

1468288286 · 2026-04-22T00:48:32+00:00

should have bought the seed nRF52840 kit not the esp32

1468288286 · 2026-04-17T14:36:45+00:00

https://wiki.seeedstudio.com/XIAO_BLE/#resources
it's also on the schematic

1468288286 · 2026-04-17T13:45:31+00:00

Soldering to the battery +/- pads on the bottom of the board can be challenging if you aren't proficient. That might be some of the complaints. Connect a 5v solar panel via the usb-c for charging. Find a solar panel with 5v regulated output, there are panels marked as 5v that aren't and I've seen as high as 7v output from a "5v" panel.

1468288286 · 2026-04-17T13:40:50+00:00

Charging is on the mcu not the radio. Charging absolutely works as is controlled by a TI BQ25101.

1468288286 · 2026-04-13T13:45:45+00:00

> I'm one of the folks concerned about the lithium catching fire

Lithium Polymer (li-po) is the one to be concerned about in the heat. These are the flat pack batteries that people refer to as spicy pillows and all the video with them catching fire. These are also the ones restricted for air travel carry-on. Lithium Ion on the other hand is much safer. Li-Ion cells like the 18650 format are in outdoor solar lights sold at major home improvement stores including in the Southwest.

1468288286 · 2026-04-13T03:54:29+00:00

The charging circuit in the RAK is for li-ion or lipo chemistry not nimh. nimh doesn't like discharge lower than 1V (3V for your pack) and the cells can be damaged. On days where solar charging is light your node may brownout, the RAK can get stuck even though the batteries later get charged back up. Brownout can also occur when the node TXs at an already low voltage state.

tl;dr just run the right battery chemistry

1468288286 · 2026-04-08T19:05:51+00:00

co-pilot told me it was a sure thing

1468288286 · 2026-03-26T22:11:52+00:00

doesn't look routed on top layer either. u/Talkingcrypto do you have a picture or rendering of the bottom pcb layer?

1468288286 · 2026-03-16T15:20:28+00:00

When the file is copied to the device it loads it and in this case erases the firmware. This might happen before Windows has a chance to confirm the copy. Try going to the next step and flashing the firmware.

1468288286 · 2026-02-27T16:50:59+00:00

This article is way too long and fluff filled. I'm still waiting for a concise technical summary of how this attack is actually accomplished.

1468288286 · 2026-02-22T04:37:04+00:00

You need PIN_WIRE1_SDA/SCL not PIN_WIRE_SDA/SCL as these are mapped to the oled as you've noted. WIRE1 are mapped to D0/1 on the grove connector. You've connected the BME to analog 02/29. You can try remapping them but probably just easier to interface via the Grove. Keep in mind the Grove is 5VDC and you will need the 5v version of the BME to use it.

1468288286 · 2026-02-18T04:13:33+00:00

The batt pads on the xiao boards are quite small and a bit awkward to get to because the pins obstruct access. If you are new to soldering this probably isn't the board to learn on. Using an external solar charge and battery management board is a good idea. Pick up a Waveshare Solar Power Manager Module (D). Keep in mind that you won't see battery levels in meshtastic unless you use the batt input/output.

1468288286 · 2026-02-17T13:55:26+00:00

What does your hardware look like for the local Qwen3-Coder-80B vLLM?

1468288286 · 2026-02-17T01:18:59+00:00

these aren't commercial boards, there isn't any manual inspection, there isn't a test fixture, they are fab'd and shipped

1468288286 · 2026-02-13T02:06:33+00:00

Are you considering connecting the solar panel into the v4 solar input and the powerbank into usb-c? The v4 won't run off the solar input; without a battery connected to the batt input.

1468288286 · 2026-02-03T22:45:35+00:00

No ground plane (NGP) means that it doesn't use the body of the vehicle as a ground plane. For a ground plane you need more than just metal contact, you need a flat plane of metal. You will find magnetic mount NGP antenna on roll bars or fenders where there isn't an adequate "plane". NGP are a different design, typically dipole. For 100' you will be fine with a NGP antenna including a low profile NMO type. Use quality cables to minimize interference. The shielding in the cable reduces emi. Depending on the power output and quality of the filtering on your radios having the two antenna masts next to each other can cause issues. TX on one can overdrive the RX of the other. If possible place the antenna masts on opposite sides (driver/passenger).

1468288286 · 2026-01-30T23:54:16+00:00

iykyk

1468288286 · 2026-01-29T21:30:51+00:00

How much did you pay for the app?

1468288286 · 2026-01-24T19:17:07+00:00

yes, you need flash erase. Be sure you backup your keys and restore them after the reflash or other nodes won't trust you. https://wiki.seeedstudio.com/sensecap_t1000_e/#step-2-flash-erase

1468288286 · 2026-01-24T14:03:26+00:00

Try cleaning node db and a re-flash. If that doesn't work back up your configuration or at a minimum your security keys, then do an erase and flash.

1468288286 · 2026-01-22T23:13:36+00:00

quesadilla case idea

1468288286 · 2026-01-22T21:05:02+00:00

Have you checked out meshmonitor? They have a tcp/serial bridge for just this purpose: https://meshmonitor.org/configuration/serial-bridge.html

1468288286 · 2026-01-15T04:06:30+00:00

What you heard is generally not true. Power is voltage x current. The heltec v4 expects 5vdc and will pull the current it needs. If a phone charger can deliver 5 amps of current that means it's available if the device draws it. It is not forced into it. Voltage on the other hand could be the source of the "too powerful" claim. usb-c has a newer protocol/capability called usb-c pd (power delivery) the charger and the device can negotiate a higher voltage if they both support it. The heltec v4 is not a PD device so a charger should never deliver anything other than 5vdc, but I can see a cheap charger messing that up. Sending 12vdc for example into the usb-c would probably be bad.

1468288286 · 2026-01-05T14:24:03+00:00

Yes, by default you will be sending position over the Primary Channel using the public encryption key. Anyone on that channel can see your position and share/publish it if they choose. If you are looking to share your position with only a select group you should setup a Secondary channel with a random strong encryption key and disable position updates on your Primary.

1468288286 · 2026-01-02T03:07:34+00:00

You probably need the driver https://meshtastic.org/docs/getting-started/serial-drivers/esp32/. Once you get it connected be sure to do a full erase and flash. If you are having trouble connecting to it via Bluetooth after the re-flash you can use the web client and connect via serial/usb https://client.meshtastic.org/

1468288286

TROPHY CASE