> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # USB To UART/I2C/SPI/JTAG Converter **Type:** Product page · **SKU:** WS-25411 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia) **Page:** https://core-electronics.com.au/usb-to-uarti2cspijtag-converter.html ([markdown](https://core-electronics.com.au/usb-to-uarti2cspijtag-converter.html.md)) USB To UART/I2C/SPI/JTAG Converter, Supports Multiple Interfaces, Compatible with 3.3V and 5V, Multiple Protection Circuits, Multiple Systems Support,... ## Pricing - **Price:** $28.55 (inc GST) — $25.95 AUD, exc GST - **Quantity discounts:** 10+ $24.92 (exc GST) · 25+ $24.14 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 6 today, and up to 300 more in 12–19 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-25411:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/WS-25411:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description ## Details USB To UART/I2C/SPI/JTAG Converter, Supports Multiple Interfaces, Compatible with 3.3V and 5V, Multiple Protection Circuits, Multiple Systems Support, Aluminum Alloy Case, Wall-mount & Rail-mount Support USB TO UART/I2C/SPI/JTAG Supports multiple interfaces | Compatible with 3.3V and 5V ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-1_11305860b02.jpg) Features At A Glance - Supports USB to 2-ch UART, or USB to 1-ch UART + 1-ch I2C + 1-ch SPI, or USB to 1-ch UART + 1-ch JTAG - Supports 2-ch high-speed UART interfaces, up to 9Mbps baud rate, with CTS and RTS hardware automatic flow control - Supports 1-ch I2C interface, for easy operating EEPROM through the host computer or programming I2C devices such as OLED and sensor - Supports 1-ch SPI interface, with 2x chip select signal pins, capable of controlling 2-ch SPI slave devices at different times - Supports 1-ch JTAG interface, can be used with OpenOCD for debugging and testing (Due to the limited testing of chips and software functions, users need to evaluate and test this function on their own) - Onboard 3.3V and 5V level conversion circuit for switching the operating level of the communication interface, better compatibility - Onboard resettable fuse and ESD protection circuit, provides over-current/over-voltage proof, safe and stable communication - Aluminium alloy case with oxidation dull-polish surface, CNC process opening, solid and durable, well-crafted - High-quality USB-B and DC connectors, smooth plug & pull, durable and reliable, with anti-reverse protection ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-3_87034f25f96.jpg) Specifications | Host interface | USB | |---|---| | Power Supply | USB port, 5V | | Operating level | 3.3V/5V (select via onboard switch) | | USB | Connector | USB-B | | Interface protection | Resettable fuse, ESD protection | | UART | Channel | 2 (the red DIP switch needs to be set to M0 mode) | | Connector | 6PIN IDC connector | | Baud rate | 1200bps~9 Mbps | | Hardware flow control | CTS and RTS | | I2C | Channel | 1 (the red DIP switch needs to be set to M1/M2 mode) | | Connector | 12PIN IDC connector (the first 4 pins are I2C) | | SPI | Channel | 1 (the red DIP switch needs to be set to M1/M2 mode) | | Connector | 12PIN IDC connector (the last 8 pins are SPI) | | JTAG | Channel | 1 (the red DIP switch needs to be set to M3 mode) | | Connector | 12PIN IDC connector (the last 8 pins are JTAG) | | dimensions | 86.0×48.0×27.6mm | Primary Function Easy to control and debug various interface devices via PC, Supports USB to 2-ch UART, or USB to 1-ch UART + 1-ch I2C + 1-ch SPI, or USB to 1-ch UART + 1-ch JTAG ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-5_657983afd9d.jpg) Multi system Support Supports Win7/8/8.1/10/11, Linux, etc. ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-7_10156da7832.jpg) Application Environments Suitable for college students, technical engineers, electronic enthusiasts, or DIY makers for learning and debugging ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-9-1_65118eb74ab.jpg) **Supports Various Interfaces** Supports multiple communication debugging interfaces, most of which can be used at the same time ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-9-2_745819bce9a.jpg) **Small and compact, easy to install** Flexible installation, suitable for various devices ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-9-3_4447786702d.jpg) **Reserved screw holes** Easy to mount, industrial metal case, rugged & durable Interface and mode description ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-11_1058439d6ac.jpg) ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-13_108536ea838.jpg) | Indicator Introduction | |---| | PWR | power indicator, lights up while the USB is connected and voltage is detected | | RXD1 | UART1 receiving indicator, lights up when the device port sends data back | | TXD1 | UART1 sending indicator, lights up when the USB port sends data | | RXD0 | UART0 receiving indicator, lights up when the device port sends data back | | TXD0 | UART0 sending indicator, lights up when the USB port sends data | Product Show ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-15_20498b1bce4.jpg) Outline dimensions ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-size_22430a72566.jpg)\* The above dimensions are measured manually. there is about 1mm error. Resources & Services ![](https://core-electronics.com.au/attachments/localcontent/res_banner_1438783d841.png) ![](https://core-electronics.com.au/attachments/localcontent/res_content_195318a7bdf.png) **WIKI:** www.waveshare.com/wiki/USB\_TO\_UART/I2C/SPI/JTAG \* Resources for different product may vary, please check the wiki page to confirm the actually provided resources. **Weight:** 0.17 kg ## Quick Overview 1. USB TO UART/I2C/SPI/JTAG x1 2. USB type A to type B cable ~1.2m x1 3. 12PIN cable ~20cm x1 4. 6PIN cable ~20cm (2PCS) x1 ![](https://core-electronics.com.au/attachments/localcontent/USB-TO-UART-I2C-SPI-JTAG-details-pack_20010175ceb.jpg) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-25411-1.jpg)