--- product_id: 51321706 title: "OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable" brand: "ovj" price: "FREE" currency: EUR in_stock: false url: https://www.desertcart.at/products/51321706-ovj-51-single-chip-system-board-with-locking-seat-support store_origin: AT region: Austria --- # Compact Design USB Interface Dual Reset Mode OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable **Brand:** ovj **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🔧 Unlock Your Creativity with the OVJ 51! ## Quick Answers - **What is this?** OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable by ovj - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/51321706-ovj-51-single-chip-system-board-with-locking-seat-support) ## Best For - ovj enthusiasts ## Why This Product - Trusted ovj brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **ISP Compatibility:** Supports AT89S51/52 and AVR series microcontrollers for broad application. - • **On-Board Expansion:** Includes a dedicated program download interface for effortless updates. - • **Compact & Efficient:** Designed for space-saving without compromising functionality. - • **Seamless Integration:** Easily switch between STC and AVR microcontrollers for versatile development. - • **User-Friendly Debugging:** Double reset operation mode simplifies program debugging for enhanced productivity. ## Overview The OVJ 51 single-chip system board is a versatile development tool designed for both STC and AVR microcontrollers. It features a dual reset operation mode for easy debugging, an on-board program download interface, and compatibility with a wide range of microcontrollers, making it an essential asset for tech-savvy developers. ## Description Baby Description: 1.5V and 3.3V power supply options to expand the use of single-chip, this is the company's first design, customers no longer have to use low-voltage microcontroller and worry! 2. PCB using double-sided copper mesh design, not a level green and blue colors, and some of the market single plate 3. The microcontroller 40 of I / O pins all the leads. Part of the components using a built-in and patch packaging design, simple structure, tight, strong sense of technical art 4. Crystal: 11.0592M 5. Support chip: STC series of low-voltage high-voltage chip AT89SXX and with the chip Pin-compatible chip, AVR microcontroller DIP-40 pin package form 6. 6. Minimum system board Whether it is 51 or AVR series MCU are double reset mode of work 7. Can be powered by USB, with 5V regulator Power supply mode, can save a 5-10 yuan power supply; also DuPont line external power supply, power supply options - 8. With 2 5V and 3.3V VCC, GND output, to facilitate the use of peripheral circuits 9. With the protection of reverse voltage breakdown components of the diode, greatly improving the safety of the system board Description: support 5V or 3.3V STC AT AVR series microcontroller 1. The small system board using STC and AVR dual reset operation mode, After the further study of AVR microcontroller, only through an AVR microcontroller adapter board, you can continue to use the small board as the AVR microcontroller minimum system STC sold downloaded with the use, excellent results 4.AT89S51 / 52 5. and double panel AVR MCU can be programmed by downloading a dedicated ISP downloader ## Features - ● The small system board adopts STC and AVR double reset operation mode, which is convenient for users to debug the program. - ● customers in the proficiency of 51 single-chip, to further learn AVR microcontroller, only through an AVR microcontroller adapter board, you can continue to use the small board as the AVR microcontroller minimum system; - ● On-board expansion of the STC microcontroller program download interface, with the store to sell the STC downloader with the effect of excellent. - ● AT89S51 / 52 and AVR series of microcontrollers can be downloaded through the ISP dedicated downloader. - ● Double panel ## Images ![OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable - Image 1](https://m.media-amazon.com/images/I/71hilLk+q1L.jpg) ![OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable - Image 2](https://m.media-amazon.com/images/I/61BPsjEPI3L.jpg) ![OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable - Image 3](https://m.media-amazon.com/images/I/61qW58pkCLL.jpg) ![OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable - Image 4](https://m.media-amazon.com/images/I/618CcW5wgBL.jpg) ![OVJ 51 single-chip system board with locking seat, support 3V 5V microcontroller STC / AT89S AVR development board + USB interface cable - Image 5](https://m.media-amazon.com/images/I/71ZhkBbrxoL.jpg) --- ## 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.at/products/51321706-ovj-51-single-chip-system-board-with-locking-seat-support](https://www.desertcart.at/products/51321706-ovj-51-single-chip-system-board-with-locking-seat-support) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-23*