--- product_id: 326347904 title: "Flirc Jeff Probe - Open Source JTAG by" brand: "flirc" price: "€ 74.96" currency: EUR in_stock: true reviews_count: 5 category: "Flirc" url: https://www.desertcart.pt/products/326347904-flirc-jeff-probe-open-source-jtag-by store_origin: PT region: Portugal --- # Integrated voltage translator for versatile target support Dual USB interfaces for seamless debugging Open source & hardware for full customization Flirc Jeff Probe - Open Source JTAG by **Brand:** flirc **Price:** € 74.96 **Availability:** ✅ In Stock ## Summary > 🛠️ Debug Smarter, Not Harder — The Open Source JTAG Revolution ## Quick Answers - **What is this?** Flirc Jeff Probe - Open Source JTAG by by flirc - **How much does it cost?** € 74.96 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/326347904-flirc-jeff-probe-open-source-jtag-by) ## Best For - flirc enthusiasts ## Why This Product - Trusted flirc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual USB Interface:** Simultaneously runs GDB server and UART for streamlined debugging - • **Open Source Freedom:** Fully open hardware and software—customize and innovate without limits - • **Compact & Lightweight:** Weighs just 20 grams—perfect for on-the-go professionals and test fixtures - • **2-Wire Serial Interface:** Unique UART routing via unused JTAG pins for single-wire convenience - • **Universal Target Compatibility:** Supports Raspberry Pi Pico & STM32 series for ultimate flexibility ## Overview The Flirc Jeff Probe is a lightweight, open source JTAG debugging tool designed for professionals and students alike. Compatible with a wide range of targets including Raspberry Pi Pico and STM32 microcontrollers, it features dual USB interfaces for simultaneous GDB and UART connections, an integrated voltage translator, and a unique 2-wire serial interface. Built for customization and cost-effective in-house debugging, Jeff Probe empowers developers to accelerate their workflow with a versatile, community-driven solution. ## Description Jeff Probe is an open source JTAG probe based entirely off the popular probe. We needed a cost effective solution for in house debugging, the ability for customization, and something we can include on test fixtures. We leveraged our volume and made Jeff Probe in hopes to give back to the community and give students an opportunity to get an affordable JTAG solution. Unique feature for 2 wire serial interfaces, allows unused JTAG pins to route UART for single wire connection. Shows up as two USB interfaces, one as the GDB server, one as the UART to the slave device. Review: You will have to spend hours trying to figure out how to make this work Review: Cool. ## Features - Supports many targets, including Raspberry Pi Pico - ST Micro: STM32F0, STM32F1, STM32F2, STM32F3, STM32F4, STM32F7, STM32H7, STM32G0, STM32G4, STM32L0, STM 32L1, STM32L5 - Open source and open hardware, based on Black Magic Sonbe - Integrated voltage translator - Intertiol products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07ZK4LFTQ | | Brand | Flirc | | Built-In Media | JTAG Connector, UART Connector, Black Magic Probe | | CPU Model | Cortex | | CPU model | Cortex | | Compatible Devices | Raspberry Pi Pico, STM32 microcontrollers | | Connectivity Technology | USB | | Connectivity technology | USB | | Customer Reviews | 3.9 out of 5 stars 55 Reviews | | Included components | JTAG Connector, UART Connector, Black Magic Probe | | Item Weight | 0.02 Kilograms | | Manufacturer | Flirc | | Model Name | Jeff Probe | | Model name | Jeff Probe | | Operating System | Linux | | Operating system | Linux | | Processor Brand | ARM | | Processor Count | 1 | | RAM Memory Technology | LPDDR4 | | Total Usb Ports | 2 | | UPC | 090281102692 | | Unit Count | 1.0 Count | | Wireless Compability | Bluetooth | ## Product Details - **Brand:** Flirc - **Model name:** Jeff Probe - **Connectivity technology:** USB - **Included components:** JTAG Connector, UART Connector, Black Magic Probe - **Operating system:** Linux ## Images ![Flirc Jeff Probe - Open Source JTAG by - Image 1](https://m.media-amazon.com/images/I/51RATFHJutL.jpg) ## Questions & Answers **Q: Does it come with the cable to go from this board to the target board?** A: Yes and a UART breakout cable. **Q: Can this product be used for swd with an arm processor?** A: Yes, the Black Magic Probe does support SWD as well as JTAG. **Q: Can i use this with a saml21 and mplabx?** A: Should be able to, as the data sheet for the SAML 21 states "two-pin Serial Wire Debug (SWD) programming, testing, and debugging interface" which the Black Magic Probe does support (as it supports SWD and JTAG). **Q: Can this be used to program nrf52832?** A: Yes, the nrf52832 is a SoC based on a Arm cortex-M4 CPU. The Jeff Probe runs a modified version of the black magic probe firmware, which is designed to debug/program most ARM CPUs ## Customer Reviews ### ⭐ You will have to spend hours trying to figure out how to make this work *by K***B on 23 April 2024* ### ⭐⭐⭐⭐⭐ Cool. *by G***E on 18 February 2023* ### ⭐⭐ Enttäuschend *by M***R on 12 January 2025* Ich wollte die Jeff Probe verwenden, um damit einen Arduino MKR 1010 zu flashen. Leider hat die (im übrigen winzige) probe nur "normale" Pins für UART, die eigentliche JTAG ist ausschließlich über den kleinen Stecker (1,27 mm pitch, nehme ich an) verwendbar; half mir nicht. Dokumentation ist Mangelware und die Webseite entscheidet sich für Ästhetik über Inhalt. Ich habe mein Problem dann mit einer DAP-LINK probe für 11 EUR gelöst, ebenfalls hier erhältlich. ## Frequently Bought Together - Jeff Probe - Open Source JTAG by Flirc - Adafruit 10-pin 2x5 Socket-Socket 1.27mm IDC (SWD) Cable - 150mm long [ADA1675] - Treedix 2pcs JTAG Breakout Board Adapter Converter SWD Breakout Jtag Debug Board with 2 Row 1.27mm Pitch 10pins Female to Female IDC Connector Flat Flexible Gray Ribbon Jumper Cable 200mm for J-Link --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/326347904-flirc-jeff-probe-open-source-jtag-by](https://www.desertcart.pt/products/326347904-flirc-jeff-probe-open-source-jtag-by) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-23*