oshchip.org

What It Is

OSHChip_V1.0 is a tiny open-source hardware processor board, roughly the size of a traditional 16-pin DIP package. At its core is a Nordic nRF51822-CFAC-A0, featuring a 16MHz ARM Cortex-M0, 256KB Flash, 32KB SRAM, and a 2.4GHz radio. Its positioning is clear: this is not a general-purpose high-performance development board, but an embedded hardware platform for breadboard experiments, hobby electronics, robotics, and small BLE prototypes.

Core Capabilities

Functionally, OSHChip supports three wireless protocols: BLE, Gazell, and ESB. It has a built-in antenna, with a typical communication range of 10 to 20 feet. Peripherals include 14 GPIO pins, UART, a 10-bit ADC, low-power comparator, counters/timers, SPI, I2C, RTC, Watchdog, AES encryption, and a random number generator. Its standout feature is the use of custom IC-style pins, allowing it to plug directly into the two middle rows of a solderless breadboard without occupying or damaging connection holes the way common pin headers can.

Development and Ecosystem

For development, the original materials explicitly mention C programming, with links to the mbed online compiler, Keil, GCC, Yotta, as well as Nordic’s official SDK, documentation library, and developer community. Debugging relies on SWD and supports in-system debugging and breakpoints, but users need an external SWD programmer, such as OSHChip_CMSIS_DAP_V1.0. Hardware files are open on GitHub, including schematics, BOM, PCB design files, Gerbers, and drill files, making the board suitable for learning and derivative designs.

Pricing and Documentation

OSHChip_V1.0 is priced at $25, with fixed shipping; purchases are handled via Tindie. Flip-Pins are also available through channels such as Tindie, Evil Mad Scientist, and SparkFun. The documentation covers core connections, pinouts, examples, and entry points to Nordic resources, but many pages are still marked as under development or placeholders. The forum was also shut down due to spam and site hijacking, with support mainly shifting to email.

Pros, Cons, and Who It’s For

Its strengths are its extremely small size, breadboard-friendly design, built-in BLE, and open hardware resources. It is well suited to teaching, prototyping, low-power sensors, wearables, and custom DIP-replacement boards. The downsides are that the nRF51822 platform is relatively old and limited in performance, and its modern BLE ecosystem is not as strong as the nRF52 series. It also requires an external programmer, while documentation completeness and community support are only average.

Access from China

The source material does not provide information on access, payment, or logistics for users in China. Actual purchasing may depend on Tindie or distributor shipping availability. If easier procurement is a priority, alternatives worth considering include Seeed XIAO BLE, Adafruit Feather nRF52, Arduino Nano 33 BLE, or Nordic nRF52 DK.