# Portenta H7 **URL:** https://forum.arduino.cc/c/official-hardware/portenta-family/portenta-h7/168.md [Latest](https://forum.arduino.cc/latest.md) · [Categories](https://forum.arduino.cc/categories.md) --- ## [How to get the best out of this forum](https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/1417951)
**Author:** [@system](https://forum.arduino.cc/u/system)\ **Replies:** 0\ **Last updated:** [December 4, 2025, 3:36pm UTC](https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/1417951 "2025-12-04T15:36:59Z")
Welcome to the Arduino forum! A guide explaining how to get the best out of this forum is available at the link below. Please read it: --- ## [About the Portenta H7 category](https://forum.arduino.cc/t/about-the-portenta-h7-category/1018188)
**Author:** [@system](https://forum.arduino.cc/u/system)\ **Replies:** 0\ **Last updated:** [August 1, 2022, 2:27pm UTC](https://forum.arduino.cc/t/about-the-portenta-h7-category/1018188 "2022-08-01T14:27:14Z")
The Arduino Portenta H7 is a board with the MKR form factor, based on the STM32H747 microcontroller You will find useful information, pinout, datasheet, examples and tutorials here: --- ## [Zephyr on Portenta H7 - USB Display? OTA program updates?](https://forum.arduino.cc/t/zephyr-on-portenta-h7-usb-display-ota-program-updates/1465155)
**Author:** [@KurtE](https://forum.arduino.cc/u/KurtE)\ **Replies:** 12\ **Last updated:** [November 9, 2026, 8:30am UTC](https://forum.arduino.cc/t/zephyr-on-portenta-h7-usb-display-ota-program-updates/1465155 "2026-11-09T08:30:51Z")
Sorry, not sure where, who to ask these types of questions, as probably most of them can only be answered by Arduino or Zephyr developers, but... I recently noticed that there that in the Portenta H7 documentation that … --- ## [Connecting MCP2515 to Portenta H7](https://forum.arduino.cc/t/connecting-mcp2515-to-portenta-h7/1457561)
**Author:** [@Jose\_manuel\_b](https://forum.arduino.cc/u/Jose_manuel_b)\ **Replies:** 11\ **Last updated:** [October 9, 2026, 12:53pm UTC](https://forum.arduino.cc/t/connecting-mcp2515-to-portenta-h7/1457561 "2026-10-09T12:53:26Z")
I'm trying to use, but 5V can burn the inputs right? Should I use any logic level converter? --- ## [Portenta H7 radio compliance test modes](https://forum.arduino.cc/t/portenta-h7-radio-compliance-test-modes/1409393)
**Author:** [@pgrendesco](https://forum.arduino.cc/u/pgrendesco)\ **Replies:** 2\ **Last updated:** [October 5, 2026, 3:56pm UTC](https://forum.arduino.cc/t/portenta-h7-radio-compliance-test-modes/1409393 "2026-10-05T15:56:14Z")
Is there any code available from Arduino to place the Murata 1DX wireless module featured on the Portenta H7 into a WiFi test mode for radio compliance testing (RED)? For example, to transmit a continuous carrier wave o… --- ## [Arduino Portenta H7 Lite with mcp2515](https://forum.arduino.cc/t/arduino-portenta-h7-lite-with-mcp2515/1102031)
**Author:** [@nicolasbdt](https://forum.arduino.cc/u/nicolasbdt)\ **Replies:** 1\ **Last updated:** [March 15, 2023, 12:06am UTC](https://forum.arduino.cc/t/arduino-portenta-h7-lite-with-mcp2515/1102031 "2023-03-15T00:06:29Z")
Hi, I'm using the autowp-mcp2515 and Arduino\_PortentaBreakout library for a CAN BUS interface using the Arduino Portenta H7 Lite. #include \ #include \ #include \ struct can\_… --- ## [MCUboot signature + Encryption not able to upload the sketch](https://forum.arduino.cc/t/mcuboot-signature-encryption-not-able-to-upload-the-sketch/1305292)
**Author:** [@rushalshah](https://forum.arduino.cc/u/rushalshah)\ **Replies:** 2\ **Last updated:** [August 11, 2026, 5:42pm UTC](https://forum.arduino.cc/t/mcuboot-signature-encryption-not-able-to-upload-the-sketch/1305292 "2026-08-11T17:42:04Z")
I was trying to implement MCU boot option with default keys with Portenta H7. I have loaded the default keys using MCUBoot enable security file. And then changed the compile option in the IDE to signature + encryption. … --- ## [H7 and HAT : I2C2 not routed to I2C4 on STM32H7](https://forum.arduino.cc/t/h7-and-hat-i2c2-not-routed-to-i2c4-on-stm32h7/1236345)
**Author:** [@voske65](https://forum.arduino.cc/u/voske65)\ **Replies:** 3\ **Last updated:** [July 8, 2026, 2:30pm UTC](https://forum.arduino.cc/t/h7-and-hat-i2c2-not-routed-to-i2c4-on-stm32h7/1236345 "2026-07-08T14:30:38Z")
Using the Portenta H7 and the HAT Board, I need to use the I2C2 from the 40 pins HAT interface.: Connection routes to the HDC connector J2 - are pin 45 and 47. However checking the Schematics of the Portenta H7, th… --- ## [Access files from qspi flash](https://forum.arduino.cc/t/access-files-from-qspi-flash/1444240)
**Author:** [@pedro\_ctcp](https://forum.arduino.cc/u/pedro_ctcp)\ **Replies:** 3\ **Last updated:** [May 15, 2026, 1:42pm UTC](https://forum.arduino.cc/t/access-files-from-qspi-flash/1444240 "2026-05-15T13:42:16Z")
Hello, I was trying to use a tflite model in the Portenta H7 with the Vision Shield. The problem is that the tflite model after quantizing it is still around 3MB. Since the portenta board has 2MB internal memory, my int… --- ## [Portenta H7 High-Density Connector Mirroring Issue - EasyEDA/JLCPCB](https://forum.arduino.cc/t/portenta-h7-high-density-connector-mirroring-issue-easyeda-jlcpcb/1439712)
**Author:** [@erga](https://forum.arduino.cc/u/erga)\ **Replies:** 8\ **Last updated:** [April 14, 2026, 12:15pm UTC](https://forum.arduino.cc/t/portenta-h7-high-density-connector-mirroring-issue-easyeda-jlcpcb/1439712 "2026-04-14T12:15:46Z")
Hi everyone, I’m designing an EasyEDA carrier board for the Portenta H7 to be assembled by JLCPCB. I’ve noticed a major discrepancy between the official Portenta Bottom View pinout and the standard DF40HC-80DS-0.4V(51) … --- ## [Differnce between H7 Lite and H7 Lite REV2?](https://forum.arduino.cc/t/differnce-between-h7-lite-and-h7-lite-rev2/1437319)
**Author:** [@photontravelslight](https://forum.arduino.cc/u/photontravelslight)\ **Replies:** 0\ **Last updated:** [March 27, 2026, 8:59am UTC](https://forum.arduino.cc/t/differnce-between-h7-lite-and-h7-lite-rev2/1437319 "2026-03-27T08:59:40Z")
What has changed? I can't seem to find this information anywhere. Mostly I just need to know if the REV2 supports CAN-FD --- ## [Portenta H7 : thermal analysis](https://forum.arduino.cc/t/portenta-h7-thermal-analysis/1023605)
**Author:** [@tjaekel](https://forum.arduino.cc/u/tjaekel)\ **Replies:** 3\ **Last updated:** [March 17, 2026, 12:50am UTC](https://forum.arduino.cc/t/portenta-h7-thermal-analysis/1023605 "2026-03-17T00:50:00Z")
A pretty "cool" board, this Portenta H7 MCU module. Fully packed with a lot of chips and features. I was a bit skeptical about heat generation (dissipation) when I use many features at the same time and full speed runni… --- ## [Portenta H7 temperature sensor](https://forum.arduino.cc/t/portenta-h7-temperature-sensor/1433769)
**Author:** [@mlucarelli](https://forum.arduino.cc/u/mlucarelli)\ **Replies:** 6\ **Last updated:** [March 5, 2026, 11:38am UTC](https://forum.arduino.cc/t/portenta-h7-temperature-sensor/1433769 "2026-03-05T11:38:39Z")
Hi, Do the H7 has a onboard temperature sensor? Maybe the midcarrier has one? how to read it? The STM32H747xI/G report having one but I don’t see how to access it from the code. thank you --- ## [Portenta H7 | Soldering ground pin is so hard](https://forum.arduino.cc/t/portenta-h7-soldering-ground-pin-is-so-hard/1431073)
**Author:** [@prithulc](https://forum.arduino.cc/u/prithulc)\ **Replies:** 19\ **Last updated:** [February 18, 2026, 7:51pm UTC](https://forum.arduino.cc/t/portenta-h7-soldering-ground-pin-is-so-hard/1431073 "2026-02-18T19:51:40Z")
I have lots of Portenta H7s and all of them have ground through-holes that are so difficult to solder on. I remember facing similar issues with other devices also but can’t exactly tell you which ones right now. Problem… --- ## [Is the H7 a good fit for my needs?](https://forum.arduino.cc/t/is-the-h7-a-good-fit-for-my-needs/1390385)
**Author:** [@jim\_hahn](https://forum.arduino.cc/u/jim_hahn)\ **Replies:** 7\ **Last updated:** [January 26, 2026, 1:35pm UTC](https://forum.arduino.cc/t/is-the-h7-a-good-fit-for-my-needs/1390385 "2026-01-26T13:35:35Z")
I have been investigating some mathematical problems and algorithms using the Zero. It works well but I now find I need a very large array which the program will read and write to continuously. 2D, perhaps 100 by 100 or… --- ## [Arduino Portenta H7 Ethernet shield](https://forum.arduino.cc/t/arduino-portenta-h7-ethernet-shield/1426510)
**Author:** [@timeauter](https://forum.arduino.cc/u/timeauter)\ **Replies:** 1\ **Last updated:** [January 22, 2026, 5:21pm UTC](https://forum.arduino.cc/t/arduino-portenta-h7-ethernet-shield/1426510 "2026-01-22T17:21:45Z")
Hi, I am using a Portenta H7 and I am designing a small custom carrier board to use Ethernet instead of USB for data transfer. The idea is similar to the Portenta Vision Shield, but with only an RJ45 connector. Lookin… --- ## [Portenta H7 - Ethernet.begin doesn't change MAC Address](https://forum.arduino.cc/t/portenta-h7-ethernet-begin-doesnt-change-mac-address/1425265)
**Author:** [@morgancailabs](https://forum.arduino.cc/u/morgancailabs)\ **Replies:** 11\ **Last updated:** [January 19, 2026, 1:42pm UTC](https://forum.arduino.cc/t/portenta-h7-ethernet-begin-doesnt-change-mac-address/1425265 "2026-01-19T13:42:54Z")
Hello there, I'm currently using a Portenta H7 with portenta HAT Carrier, and have some trouble with MAC address: Setting MAC Address with Ethernet.begin (Mac) doesn't take Mac into account, and ethernet.SetMACAddress(… --- ## [Reading Digital Input // Portenta Machine Control // PLC Sketch](https://forum.arduino.cc/t/reading-digital-input-portenta-machine-control-plc-sketch/1425234)
**Author:** [@markxcoder](https://forum.arduino.cc/u/markxcoder)\ **Replies:** 1\ **Last updated:** [January 19, 2026, 8:44am UTC](https://forum.arduino.cc/t/reading-digital-input-portenta-machine-control-plc-sketch/1425234 "2026-01-19T08:44:07Z")
Hi, I am struggling with reading the digital input pin in PLC IDE. We have a program that reads digital pin A0 on OPTA and it works flawlessly. However, when converting the program to Portenta, this doesnt work at all … --- ## [Portenta H7 schematic: what is SJ and indcutor values](https://forum.arduino.cc/t/portenta-h7-schematic-what-is-sj-and-indcutor-values/1193707)
**Author:** [@marcelrobitaille](https://forum.arduino.cc/u/marcelrobitaille)\ **Replies:** 1\ **Last updated:** [December 27, 2025, 11:24am UTC](https://forum.arduino.cc/t/portenta-h7-schematic-what-is-sj-and-indcutor-values/1193707 "2025-12-27T11:24:14Z")
Hello, I am looking at the schematic for the Portenta H7. On sheet 7, there are many components labelled SJx. The symbol looks like a resistor. I've never heard of SJ as a reference designator, and I haven't found it on… --- ## [3.3V of Portenta H7 only 3,0V](https://forum.arduino.cc/t/3-3v-of-portenta-h7-only-3-0v/1123020)
**Author:** [@fhieber](https://forum.arduino.cc/u/fhieber)\ **Replies:** 3\ **Last updated:** [December 25, 2025, 6:38pm UTC](https://forum.arduino.cc/t/3-3v-of-portenta-h7-only-3-0v/1123020 "2025-12-25T18:38:39Z")
Hi there, I've been tinkering a bit with the Portenta H7 and I noticed that the 3.3V Pins of this microcontroller as well as the 3.3V pins of the Portenta Breakout board only provide 3.0V when it's powered via USB. I ha… --- ## [Portenta H7 pin names](https://forum.arduino.cc/t/portenta-h7-pin-names/1400288)
**Author:** [@mlucarelli](https://forum.arduino.cc/u/mlucarelli)\ **Replies:** 7\ **Last updated:** [December 24, 2025, 6:07pm UTC](https://forum.arduino.cc/t/portenta-h7-pin-names/1400288 "2025-12-24T18:07:49Z")
Hi all, maybe this topic has already been discussed in the past, but I haven't been able to find a comprehensive answer. in the STM32H747 datasheet (pag 81-95) pins are named after chip ports (like PJ0, PC1, etc) and … --- ## [Portenta H7 SPI CS @ D7](https://forum.arduino.cc/t/portenta-h7-spi-cs-d7/1419226)
**Author:** [@maliksabbah](https://forum.arduino.cc/u/maliksabbah)\ **Replies:** 0\ **Last updated:** [December 12, 2025, 4:55am UTC](https://forum.arduino.cc/t/portenta-h7-spi-cs-d7/1419226 "2025-12-12T04:55:44Z")
Hello, I am trying to connect MIKROE 6DOF 14clicks IMU to my portenta H7 that is on a mid carrier. Previously, I was successful to read Z axis via the code pasted in the end of this post. Now, I have moved my setup int… --- ## [Portenta H7 doesn't have 2MB Flash size in Zephyr](https://forum.arduino.cc/t/portenta-h7-doesnt-have-2mb-flash-size-in-zephyr/1416128)
**Author:** [@clemens1509](https://forum.arduino.cc/u/clemens1509)\ **Replies:** 11\ **Last updated:** [November 26, 2025, 9:53am UTC](https://forum.arduino.cc/t/portenta-h7-doesnt-have-2mb-flash-size-in-zephyr/1416128 "2025-11-26T09:53:08Z")
Hi, I use Zephyr and I received a smaller FLASH size than expected from MAP-file: Name Origin Length Attributes FLASH 0x0000000008040000 0x0000000000060000 xr prj.conf: C… --- ## [Using qspi flash in zephyr](https://forum.arduino.cc/t/using-qspi-flash-in-zephyr/1416069)
**Author:** [@clemens1509](https://forum.arduino.cc/u/clemens1509)\ **Replies:** 1\ **Last updated:** [November 24, 2025, 9:28am UTC](https://forum.arduino.cc/t/using-qspi-flash-in-zephyr/1416069 "2025-11-24T09:28:53Z")
Hi, I want to extend the flash size on Portenta H7 to more than 2MB internal flash using the qspi interface in zephyr. How can I do that in an overlay file ? Thanks, Clemens --- ## [RTC LSE source not being selected](https://forum.arduino.cc/t/rtc-lse-source-not-being-selected/1412455)
**Author:** [@nonameneeded1](https://forum.arduino.cc/u/nonameneeded1)\ **Replies:** 14\ **Last updated:** [November 6, 2025, 3:41pm UTC](https://forum.arduino.cc/t/rtc-lse-source-not-being-selected/1412455 "2025-11-06T15:41:27Z")
I am trying to get the RTC of the stm32h7 to run for a project. Since I didn't get any library working with this RTC like I wanted it to I decided to make it work through processor registers. Currently I have this sketch… --- ## [How to connect a 3-wire modbus device to Arduino Portenta UART?](https://forum.arduino.cc/t/how-to-connect-a-3-wire-modbus-device-to-arduino-portenta-uart/1409663)
**Author:** [@controls\_guy2008](https://forum.arduino.cc/u/controls_guy2008)\ **Replies:** 0\ **Last updated:** [October 16, 2025, 4:27pm UTC](https://forum.arduino.cc/t/how-to-connect-a-3-wire-modbus-device-to-arduino-portenta-uart/1409663 "2025-10-16T16:27:07Z")
Hello, I am looking to connect a sensor that uses a tricky 3-wire modbus protocol to a serial UART on the arduino portenta. Any ideas? I am lost. --- ## [Portenta H7 SPI and analog reading problem](https://forum.arduino.cc/t/portenta-h7-spi-and-analog-reading-problem/1409634)
**Author:** [@nonameneeded1](https://forum.arduino.cc/u/nonameneeded1)\ **Replies:** 5\ **Last updated:** [October 16, 2025, 1:51pm UTC](https://forum.arduino.cc/t/portenta-h7-spi-and-analog-reading-problem/1409634 "2025-10-16T13:51:03Z")
Hello! I've been having a really weird problem with the Portenta H7. I have a project, where the Portenta is supposed to open communicate to a ISO1h812g SPI chip, which then in turn turns on a temperature sensor. The da… --- ## [Portenta H7: debug with STLINK-V3MINIE or STLINK-V3SET](https://forum.arduino.cc/t/portenta-h7-debug-with-stlink-v3minie-or-stlink-v3set/1021145)
**Author:** [@tjaekel](https://forum.arduino.cc/u/tjaekel)\ **Replies:** 2\ **Last updated:** [September 18, 2025, 8:45pm UTC](https://forum.arduino.cc/t/portenta-h7-debug-with-stlink-v3minie-or-stlink-v3set/1021145 "2025-09-18T20:45:39Z")
FYI: I bought and tried STLINK-V3MINIE: IT WORKS When you need a debugger on Portenta H7, coming with a cable (no need to solder) - this STLINK-V3MINIE is not 100 percent pin compatible with Portenta H7 debug header -… --- ## [SPI + analogRead issue on Portenta H7 — ISO1h812g switch not powered after first run](https://forum.arduino.cc/t/spi-analogread-issue-on-portenta-h7-iso1h812g-switch-not-powered-after-first-run/1404208)
**Author:** [@avjakob](https://forum.arduino.cc/u/avjakob)\ **Replies:** 0\ **Last updated:** [August 26, 2025, 7:29am UTC](https://forum.arduino.cc/t/spi-analogread-issue-on-portenta-h7-iso1h812g-switch-not-powered-after-first-run/1404208 "2025-08-26T07:29:48Z")
(topic deleted by author) --- ## [PortentaH7 with TFlite](https://forum.arduino.cc/t/portentah7-with-tflite/1404306)
**Author:** [@newuser1543](https://forum.arduino.cc/u/newuser1543)\ **Replies:** 0\ **Last updated:** [August 26, 2025, 6:09pm UTC](https://forum.arduino.cc/t/portentah7-with-tflite/1404306 "2025-08-26T18:09:46Z")
Please, I have object detection model best.tflite I want to use this model with portentaH7. I am beginner with TFlite model so can you give me some advice on : 1- How can I use like this lite model with arduino ide and… [Next page](https://forum.arduino.cc/c/official-hardware/portenta-family/portenta-h7/168.md?page=1)