Jumperless V5 is a one-of-a-kind, programmable breadboard based on a Raspberry Pi RP2350B microcontroller that lets you skip the jumper wires and jump right into prototyping. It is described as “an Integrated Development Environment (IDE) for hardware.” The Jumperless V5 also removes the need for test equipment as it comes with built-in power supplies and can function as a multimeter, oscilloscope, function generator, and logic analyzer.
As the name implies, the Jumperless V5 breadboard is a revamped version of the original Jumperless, with significant upgrades to make the board easier to use. The Jumperless V5 features a 14 x 30 LED matrix display under the breadboard, a probe for making connections and measurements, four ±8 V, 300 mA power supplies, daisy-chain headers, and overcurrent/overvoltage protection.
The software-defined jumpers allow all points to be connected. The four individually programmable ±8 V power supplies, GPIOs, and management channels for voltage, current, and resistance can be connected anywhere on the breadboard or the Arduino Nano header.
The Jumperless V5 programmable breadboard supports “optional computerless operation.” Full control is offered over the serial terminal interface, and via the onboard click-wheel, probe, and LEDs. One Raspberry Pi 2350B core handles the essential operations while the other core runs a Python interpreter with a built-in module for making function calls and executing scripts without an external computer.
Jumperless V5 specifications:
- MCU – Raspberry Pi 2350B, dual-core ARM Cortex-M33 or Hazard3 RISC-V @ 150MHz
- Memory – 520 KB RAM
- Storage – 16 MB built-in flash storage
- Display – 451 RGB LEDs (5 per row)
- USB – USB Type-C
- Peripherals
- 4x 12-bit DACs (Microchip MCP4278)
- 7x 12-bit ADCs (built into the RP2350)
- 2x 12-bit current/voltage sensors (Texas Instruments INA219)
- 4x 5V logic-level GPIO (MCP23S17)
- 6x 3.3V logic-level GPIO (RP2040)
- 2x 14-pin daisy-chain headers to pass 8 analog signals, SPI, and power to another board
- Arduino Nano header
- Switching Method – Analog crossbar matrix of 12 CH446Q switches
- Circuit Input – Always-on Probe, Wokwi, Thumbwheel, Terminal, Routable UART, Text file, Python
- Measurement – Voltage, current, resistance, frequency, digital data
- Power Output
- Power Rails – Individually adjustable ±8V 300mA
- Voltage – -9V to +9V (with overvoltage protection)
- Misc – Rotary encoder/switch, probe (TRRS)
- Dimensions – TBD
Projects can be uploaded to the Jumperless V5 board via USB. They are stored as text files on the board’s 16MB of flash storage and saved in an app library to be run anytime. The Jumperless V5 also accepts commands from UART via the Arduino Nano header. The desktop app can perform firmware updates and poll Wokwi projects for changes.
The Jumperless V5 project is open-source software and hardware, with schematics, design files, firmware, breadboard shell 3D models, and app code for a desktop client publicly hosted in the GitHub repository. The Jumperless V5 is one of the first devices to use the new RP2350B MCU and it joins the likes of the Pimoroni Explorer board, Bus Pirate 5XL and 6 debugging tools, and the Cytron IRIV IO Controller.
The Jumperless V5 campaign has surpassed its funding goal on Crowd Supply. It is priced at $349 with free worldwide shipping. The maker states that returns will always be accepted, full refunds will always be offered and repairs will always be free.
Tomisin is a writer specializing in hardware product reviews, comparisons, and explainers. He is very passionate about small form factor and single-board computers.
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