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Welcome to STM32 circle

TapNLink Primer for STM32 instant mobile connectivity and HMI. PRIMER Connects STM32 to Mobiles

Discover the ease adding NFC, Bluetooth Low Energy (BLE) and WiFi (ESP32) to any STM32 application without redesigning hardware or recoding firmware. Create Human-Machine Interfaces (HMI) for your application that run as mobile apps (Android, iOS). View data on mobiles, or modify specific variables from your HMI app. You can even log data automatically to a Cloud platform.

No Coding. Just connect & configure!

Your connected proof-of-concept is just minutes away. TapNLink Primer uses your STM32's SWD port so that you can create a connected version of your application and automatically generate your first mobile apps (APK or IPA formats).

Learn more...

- Visit for free software downloads and documentation
- Check out the STM32 HMI video demo to see how easy TapNLink is
- Learn about special STM32 features like wireless debugging with Ride7


Note: STM32circle Projects & Resources Remain Online

The stm32circle forums are closed, however forum content, resources and projects remain online.

Documents and projects for EvoPrimer, Open4 Primer, STM32 Primer2 and STM32 Primer1 can be downloaded without an account of login.


20 last projects
Date Title Category Hw version Downloads
2015-04-20 MathGame 1 game All 2407
2014-04-20 at command electronic 2366
2014-04-16 STM32F207VFT6 electronic 2357
2014-04-11 Inertial Center for Primer2 1.0.1 other Primer2 2359
2014-06-04 ZP Video Player Design Contest 2013 other EvoPrimer 2369
2014-03-17 SmartOpen4 1.0 electronic EvoPrimer 2359
2014-03-20 RoboWarz 2.0 game EvoPrimer 2345
2013-12-19 Christmas 1.0 game All 2368
2013-10-07 DMA2D-TR 1.0 resource EvoPrimer 2369
2013-10-07 Space 2D game EvoPrimer 2347
2013-10-07 DMA2D-Demo 1.0 resource EvoPrimer 2398
2013-08-04 uKOS-II 3.0.1 other 2365
2013-07-26 Filesystem demo 1.0 resource All 2355
2013-10-07 Cx_Demo 1.0 resource All 2340
2013-07-24 STM32F407 - Camera 1.0 other EvoPrimer 2379
2015-04-20 GPS 1 game All 2367
2013-07-24 Fast Chart 1.9 other All 2350
2013-01-07 EvoPrimer Tutorial (Cubic) 3.0 resource EvoPrimer 2352
2012-06-14 CHIP8 emulator v1 game EvoPrimer 2347
2012-05-17 Space Invaders 10.1 game Primer2 2368
Latest NEWS
Webinar: Instant AWS for STM32 Systems
Connect and provision your STM32 application on AWS. With Tap Manager and TapNLink PRIMER you can do it in minutes.
Sign Up to Learn How

Create Mobile Apps without Coding
With our App Creator drag-and-drop environment, create UI apps for your STM32 designs in minutes!
Demo Video

Ride7 Wireless Debugger/Programmer
Ride7 / RKit-ARM use TapNLink wireless modules to program and debug STM32 over wireless.
Demo Video


Latest versions of Ride7 & RKit-ARM offer wireless debugging of STM32.