Forum - Recent Threads

Converting The SENSECAP to standard Lora Wan Gateway

meera_hussien — Wed, 01 Apr 2026 02:47:29 GMT

I have a SenseCAP gateway that I used previously for Helium, but I am not using it anymore. I am planning to convert it into a standard LoRaWAN gateway. I searched online and found that it seems possible. Just wanted to ask if any members here have tried this before, and was it successful?

The link for this product is below

https://www.sensecapmx.com/docs/sensecap-m1/overview/

Industrial Internet of Things (IIoT) solutions

athang — Wed, 18 Feb 2026 08:41:31 GMT

I am here looking for IIoT solution for organization. I also searched this on many different website and found many solutions. We are bit confused to which one to choose. One of my friend suggest me this platform, and i am hoping i will get the solution from here. So can anyone please suggest the good solution platform?

Has anyone built a truly low-power camera IoT device on an off-the-shelf SoM?

inxnik — Tue, 18 Nov 2025 10:33:26 GMT

I’m trying to achieve Amazon Ring–level battery life — several months on a 5000 mAh battery — using non-custom SoMs. The device should stay almost at zero power between photo sessions.

So far, all tested platforms (ESP32-S3, ESP32-P4, AmebaPro2 RTL8735BDM, Luckfox RV1103) show deep-sleep consumption ≥ 70 mA, far above the advertised values, making them unsuitable.

We also tested a two-chip architecture (small MCU like ATtiny85 waking the main SoM), but the main issue is boot-to-first-photo time. It must be <1 second, which is hard with Linux-based SoMs — yet only Linux SoMs support proper MIPI sensors like IMX219/IMX708.

Questions:

– Has anyone achieved a low-power camera system (photo only) on an existing SoM, with real deep sleep or fast wake-up?

– Is designing a custom board around a SoC the only realistic solution?

– Or can something like Radxa CM3 + a highly optimized Linux stack (Buildroot, custom suspend modes) reach <1 s wake and low idle power?

– Has anyone successfully built a battery-powered MIPI-camera device with either deep sleep or a two-chip wake architecture?

IoT

juanjm7 — Mon, 17 Nov 2025 08:36:57 GMT

Hello, my name is Juan Jacinto Montenegro, and I am an electronic engineer at Rother.
We have contacted STMicroelectronics to obtain recommendations regarding their products for our IoT project. They have suggested that we contact their distributors.
Our project focuses on the automotive sector, both in the civil and military fields. For this project, we need to meet a series of specifications:

-UART or USB2.0 Full-speed communication interfaces to communicate with our microcontroller, which will act as a host controlling the IoT modules.

-Wi-Fi and cellular (LTE 4G/5G) connection for sending data via HTTP and MQTT to a remote server.

-Sending SMS messages and voice calls

-Support for GNSS geolocation.

-Interface for connecting a MicroSD card and storing local data.

I would like to know if you have any IoT modules or boards that meet these requirements. Initial testing would serve to validate the results obtained and, if these were satisfactory, we would proceed to purchase the different products tested (cellular module, WI-FI module...) to design our own board.

Help identifying SoC used in Amazon Ring (2024, battery version) + advice on low-power IoT camera platform

inxnik — Fri, 24 Oct 2025 16:25:32 GMT

Dear engineers, hello everyone — I’d be very grateful for your help.

Is there any way to identify which SoC is used in the Amazon Ring (battery-powered video doorbell, 2024 version) based on the following chip markings?

АС1ООЗВЗЕ-FВ

UVHA 17005 .000

J-2436 20

Research through neural tools and tech insider databases didn’t produce results. It’s known only that this is not the Ambarella CV25A75 SoC used in the wired 2021 versions.

—

And one more question — I’d also appreciate your advice:

Which SoC/SOM would you recommend for building a low-cost, low-power IoT camera device, similar to a battery-powered video doorbell?

Priorities:

Power efficiency
MIPI CSI-2 interface for Sony IMX sensors
Wi-Fi + Bluetooth
No need for powerful video processing

Important: an available ecosystem (chips and/or modules, SDK, documentation), not something too rare. ESP32 (Espressif) isn’t powerful enough, while Ambarella H22 SoM feels like overkill — looking for something in between. Target pilot batch: ~1,000 units.

RangePi

nilssonm — Fri, 12 Sep 2025 07:30:11 GMT

Hi everyone,

The board seems to be a nice little board for LoRa testing. I have purchased one but having big problems to program it. I have followed the instructions and pressed the BOOTSEL button when plugging it in and I only get a serial device and no mass storage.

Is there someone out there that is able to help me and guide me in the right way. I have tried on my Apple Silicon Mac with macOS and with Windows. I have also tried on an Intel Mac and on a Windows PC. I have tried with different cables and ports. But no luck in any case. I have also tries with another RangePi with same results.

Is it possible to re-flash the device in someway or can I do something else to be able to connect to it?

What killed your last IoT project?

CalvinTerence — Mon, 18 Aug 2025 05:03:41 GMT

Scalability? Power issues? Funding? Security concerns?

Share your lessons from failed IoT development. What would you do differently today?

Recognition of Monarch GO Modem to Raspberry Pi

LJtheballer — Tue, 22 Apr 2025 19:46:30 GMT

Hey,

I just wanted to see if I could get help on terms of getting the raspberry pi to connect with the Monarch Go Modem. My team and I have gone through a lot trying to figure out the software side of things for the Monarch Go Modem but haven't had success in terms of getting the raspberry pi to recognize the Modem after placing the modem alongside with the pi hat on the raspberry pi. If I could get some help on that, that would be great.

Best Low-Power Microcontrollers for Battery-Powered IoT Projects

ariajames_121 — Wed, 12 Mar 2025 16:44:44 GMT

Hey everyone,

I'm new here and excited to be part of this community! I'm working on a battery-powered IoT project and trying to find the best low-power microcontroller for the job. The goal is to maximize battery life while still having enough processing power to handle sensor data and communicate wirelessly (BLE, Wi-Fi, or LoRa).

I’ve been looking into options like the Nordic nRF52 series and STM32L series, but I’d love to hear from those with hands-on experience. What MCUs have worked well for you in low-power applications? Any tips on optimizing power consumption?

Looking forward to your thoughts.

Can the ESP32 be trusted? Undocumented "backdoor" found in popular microcontroller

cstanton — Sat, 08 Mar 2025 22:58:57 GMT

As per https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/ :

"At RootedCON, the Tarlogic Innovation team presents research revealing undocumented commands in the ESP32 microchip, present in millions of smart devices with Bluetooth

The cybersecurity company has designed a unique tool to perform security audits of Bluetooth devices on any operating system
Tarlogic Security has detected a backdoor in the ESP32, a microcontroller that enables WiFi and Bluetooth connection and is present in millions of mass-market IoT devices. Exploitation of this backdoor would allow hostile actors to conduct impersonation attacks and permanently infect sensitive devices such as mobile phones, computers, smart locks or medical equipment by bypassing code audit controls."

(source: https://x.com/Tarlogic/status/1897584096135581721)

I always suspected that Bluetooth was vulnerable in some manner, but for the ESP32 to have something shady about it is astonishing. If you're interested in cyber security you should check out Tarlogic's github repositories and X feed.

VPN will it solve my problem?

colporteur — Wed, 05 Mar 2025 17:03:19 GMT

I have an Archer AX11000 router that can support a VPN. I need to provide credentials to a VPN server to complete the configuration. I recall using VPN's at work. The VPN enabled me to remote into the company network from the Internet. I would like to VPN into my home network.

I've long since retired and don't have access to the network brains that made it work at the company. I would buy them a coffee and float the questions. To access the company network we had a dongle that generated a code along with a username and password to use on the VPN concentrator. If all the magic worked my laptop at home was sitting on the company network.

I'm with hand-in-hand asking the brains in the E14 Community this network question. Does the Archer router VPN provide this same access? I would need to connect the router to a service like NordVPN. Once that is done can I use the VPN to get into my home network or would that require some other networking device?

Which trustworthy home or small business router will you choose in year 2025?

HKPhysicist — Thu, 19 Dec 2024 17:28:59 GMT

U.S. Considers Ban On Chinese Made TP-Link Routers

https://www.forbes.com/sites/larsdaniel/2024/12/18/us-considers-ban-on-chinese-made-tp-link-routers-heres-why/

Federal agencies, including the Departments of Commerce, Defense, and Justice, have launched investigations into TP-Link following reports of its routers being exploited in cyberattacks allegedly linked to Chinese state actors. A recent Microsoft Report revealed that compromised TP-Link devices were used in ransomware operations, fueling concerns about the company’s role in facilitating cyber threats.

I have been using their home routers for many years. Please recommend a trustworthy one to me. 😖

Telit Cinterion ENS22-E

meera_hussien — Fri, 23 Aug 2024 08:54:49 GMT

Good day.

I would like to know if anyone has previously work on the 5G NB IoT click? This board is based on the Telit Cinterion ENS22-E. Currently i am facing difficulties to connect the modem to the network.

Thank you.

I am getting the unknow device in device manager after installing circuit python. How to install driver for it.

manojroy123 — Thu, 08 Aug 2024 09:05:00 GMT

I am getting an unknown device 'CircuitPython CDC Control' in device manager after installing circuit python as given in the image bellow. Please let me know how to install driver for that device.

Serial port is not opening in mu editor for circuit python

manojroy123 — Sat, 03 Aug 2024 12:20:39 GMT

Even After connecting the nRF52840 DK to mu editor. Serial port of the mu editor is showing error. Can anyone help me out in it. I am using circuit python and have installed all the adafruit drivers for serial port but still not showing serial terminal.

I some how was able to load circuit python in the nRF52840 DK. but not getting python terminal

manojroy123 — Fri, 02 Aug 2024 14:35:06 GMT

I some how was able to load circuit python in the nRF52840 DK. but not getting python terminal. Thanks to community member who helped me in setting up circuit python on the development board. Know I need help with respect to getting a python terminal. Can anyone guide me through. In how to setup a python terminal.

I need help in flashing CircuitPython in nRF52840 DK can anyone help me out

manojroy123 — Mon, 29 Jul 2024 13:34:46 GMT

I need help in flashing CircuitPython in nRF52840 DK can anyone help me out. I tried nrf tool but it shown a lot of error. Is there any other way to flash CircuitPython in the development board.

Blues.io Notecard carrier is not working

manojroy123 — Thu, 18 Jul 2024 18:04:49 GMT

Blues.io Notecard carrier not working. Does anyone knows how to start using it. I have heard that it is very easy to setup. Can anyone can guide me in it.

I need help with respect to uploading "yolov3.weights", "yolov3.cfg" in google colab

manojroy123 — Tue, 16 Jul 2024 14:24:52 GMT

Can Anyone help me out with uploading "yolov3.weights", "yolov3.cfg" in google colab. And also uploading "coco.names" in google colab.

24c512

sivaguru — Mon, 15 Jul 2024 04:13:03 GMT

I am using 24c512 eeprom to store data when switch is pressed , then after retrieve data and send it to server

Initially entire memory is divided into slots each of 32bytes long to store data and

I used many memory space (slots)

Weather the life span of eepom will reduce, if i reuse same memory space (slot) to write and read repeatedly ?

and will the life span of eeprom will improve if i use different memory space (slot) instead of reusing the same slot repeatedly ?

Request for Help with Implementing MAC Filter on ESP8266 in AP Mode using Arduino Platform(PlatformIO)

SajjadQadri — Wed, 10 Jul 2024 19:12:46 GMT

Hello Everybody,

I am working on a project using the ESP8266 and need to implement a MAC filter in Access Point (AP) mode. I am using the Arduino platform(PlatformIO) for programming and require your assistance.

My main issue is how to define a list of allowed MAC addresses and disconnect a client if its MAC address is not on the allowed list.

I have tried several different codes so far, but it seems that some of these codes do not work correctly. For example, the code that was previously suggested to me:
void wifi_station_deauth(uint8_t *bssid) {
struct auth_deauth_frame {
uint16_t frame_control;
uint16_t duration;
uint8_t da[6];
uint8_t sa[6];
uint8_t bssid[6];
uint16_t seq_ctrl;
uint16_t reason_code;
} __attribute__((packed));

struct auth_deauth_frame frame;
frame.frame_control = 0x00C0;
frame.duration = 0;
memcpy(frame.da, bssid, 6);
memcpy(frame.sa, WiFi.softAPmacAddress().c_str(), 6);
memcpy(frame.bssid, WiFi.softAPmacAddress().c_str(), 6);
frame.seq_ctrl = 0;
frame.reason_code = 0x0001; // Unspecified reason

wifi_send_pkt_freedom((uint8_t *)&frame, sizeof(frame), 0);
}

This code does not disconnect clients whose MAC addresses are not on the allowed list. I have been using standard Arduino library functions as well as lower-level SDK functions, but I have not been able to resolve the issue.

Has anyone had a similar experience or can provide a comprehensive guide for creating an effective MAC filter on the ESP8266? Any sample code or suggestions in this regard would be greatly appreciated.

Thank you in advance for your help and guidance.

Best regards,
Sajjad Qadri

Request for Help with Implementing MAC Filter on ESP8266 in AP Mode using Arduino Platform(PlatformIO)

SajjadQadri — Wed, 10 Jul 2024 19:11:17 GMT

Hello Everybody,

I am working on a project using the ESP8266 and need to implement a MAC filter in Access Point (AP) mode. I am using the Arduino platform(PlatformIO) for programming and require your assistance.

My main issue is how to define a list of allowed MAC addresses and disconnect a client if its MAC address is not on the allowed list.

wifi_send_pkt_freedom((uint8_t *)&frame, sizeof(frame), 0);
}

Thank you in advance for your help and guidance.

Best regards,
Sajjad Qadri

Mbed end of life announcement

ntewinkel — Wed, 10 Jul 2024 18:00:52 GMT

I just got an email from Mbed this morning, announcing they will stop supporting the tech in 2026.

https://forums.mbed.com/t/important-update-on-mbed-end-of-life/23644

I have an Mbed board, and I quite liked it and the platform, but I have to admit I never did much with it, and I mostly stopped using MBED shortly after checking it out.

One of their reasons is that Arduino, etc now covers the things MBED was built to solve. I’m guessing those boards are now programmable with the Arduino IDE?

Stm32F411 blackpil board is not recognized by dfu-util program

manojroy123 — Sat, 22 Jun 2024 15:18:33 GMT

stm32f411 is not getting recognized by dfu-util program. Can anyone please help me out in it.

Hi can anyone rerview my post on esp32 s3 sense camera streaming

manojroy123 — Sun, 02 Jun 2024 18:02:36 GMT

Hi, can anyone review my project on esp32 s3 sense video streaming.

link:-

www.hackster.io/.../esp32-s3-sense-video-streaming-in-micro-python-0d1486