802.11AH HaLow IOT wifi 920mhz

geofrancis · February 17, 2025, 7:34pm

I found this while googling for EU halow radios, This is the first i have seen selling EU 868 radios.

julled · February 18, 2025, 1:41pm

great to hear there are some EU devices.

but i guess real world EU datarates should be very low due to tiny bandwidth and duty-cycle regulations?!

xznhj8129 · April 5, 2025, 3:05am

I don’t think it’s worth it to try making it work for EU, the regulations make it all but useless.

jodoe · April 13, 2025, 1:58pm

AH-WNB-firmware_20250328165143.zip (204.7 KB)

New firmware. I’ve updated both of mine and they are connecting correctly.

2025/3/28 Ver: 33483

Fix the problem that the buffer cannot be applied after RF reboot;

2025/3/14 Ver: 33456

Fix the frequency offset compensation error introduced by 32992;

2025/2/21 Ver: 32992

When there is strong interference and the management package cannot be sent out, the cca threshold is also increased;
When an abnormality occurs and Tx or Rx cannot be performed, reboot the RF;

2025/1/9 Ver: 32389

Fix the problem of incorrect frequency point setting in some cases;

Yuri_Rage · April 13, 2025, 3:29pm

I just bought the US 915MHz version of that hardware (or a direct clone - form factor is identical). Brief testing shows promise out to about 1/4 mile with 720p rtsp video (over the ground, not airborne). I intend to use the new Ethernet features for telemetry as well.

The modules take 5V power, and I cut apart the wall wart to accept USB 5V for testing outdoors on a laptop. It’s very low current draw.

It’s worth saying that the EU compliant versions supposedly only support about 5Mbps, where US ones are about triple that. Still, 5Mbps is plenty for MAVLink or low res video.

geofrancis · April 13, 2025, 5:46pm

Im planning on going at glacial speeds, 1fps would be more than enough for me.

geofrancis · April 26, 2025, 1:44am

I just found these, ESP32-CAM boards with HALOW built in!

github.com/HelTecAutomation/ESP_HaLow

libraries/wifi-halow/examples/As_VideoWebServer/As_VideoWebServer.ino

main

/**********************************************************************
  Filename    : Video Web Server
  Description : The camera images captured by the ESP32S3 are displayed on the web page.
  Auther      : www.freenove.com
  Modification: 2022/11/01
**********************************************************************/
#include "esp_camera.h"
#include <HaLow.h>
#include "sd_read_write.h"

const char* ssid     = "HT-H7608";
const char* password = "123456789";
void cameraInit(void);
void startCameraServer();

#define LED 19

void setup() {
  Serial.begin(115200);
  pinMode(LED,OUTPUT);

This file has been truncated. show original

https://www.aliexpress.com/item/1005008405280050.html

Avamander · April 28, 2025, 9:01pm

Very interesting, seems to be MorseMicro this time. So far their chips have been relatively hard to obtain. Hopefully it’s better than TaiXin and doesn’t have broken encryption, but I’m not getting my hopes up. When I last checked I didn’t see any good documentation or SDK for the MM chips and I’ve seen a few people complain about MM’s HaLow stack’s code quality. (Even Heltec’s links to schematics and datasheet for this module are broken.)

It’s actually such a pity that HaLow vendors (MorseMicro, TaiXin and Newracom) have provided such poor software support for their hardware. It would be really useful if all these implementations were more usable and interoperable.

julled · May 6, 2025, 8:40am

Just checked there are some ressources for the Heltec chip:

you can also buy the chip separetly:
https://de.aliexpress.com/item/1005008262966726.html?gatewayAdapt=glo2deu#nav-specification

Would be interesting if the heltec then supports the driver stack:

Regarding quality at least the morsemicro code seems to be at least well documented and should somehow be possible to integrate into custom solutions, based on my uneducated guess