Serial Wombat®

Serial Wombat® Smart I/O expansion and Embedded Coprocessors

Add 4 to 18 smart I/O pins over I2C or UART with the Serial Wombat SW4B, SW8B or SW18AB. Dozens of pin modes offload common time-sensitive embedded tasks from your Arduino or Python board. With ADC, PWM or servo Generation, General I/O, I2C->UART conversion and more, Serial Wombat chips and boards do the job of a variety of popular expansion boards in a single Board. SW8B and SW18AB support on-chip feedback control through PID, Hysteresis and other control algorithms.
SW8B Application boards such as the GRIP, BRIDGE and BUZZ boards add power control and feedback options to create entire I2C controlled subsystems for controlling motors, servos, and more.
Highly polished Arduino, MicroPython/Python and C# libraries provide a uniform interface across platforms and languages. Extensive online documentation, examples and tutorials make both simple and advanced projects easy.
Certified Open Source Hardware and software allow you to modify or study the boards, and provide sourcing security.

Shown here: A preprogrammed Serial Wombat 18AB Red Label chip kit assembled and ready to be commanded by an Arduino Board, Raspberry Pi, or PC over I2C or UART.

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Serial Wombat 18AB Boards - Our most Powerful:

Serial Wombat 18AB Kit (2 Chips)
Serial Wombat 18AB Preassembled
Serial Wombat 18AB Xiao Expansion Board

Serial Wombat 8B Boards: Our Most Economical:

Serial Wombat 8B Subsystem Boards: Higher level functionality:

Serial Wombat 4B chips: Our Most Compact:

SW4B 4 Pack

Serial Wombat®

Interface Boards

Every Serial Wombat Interface board is designed to be a pleasure to use. Jon doesn’t set out to create products. He creates boards to make his life in the lab easier based on real life needs or suggestions from customers. If the boards turn out good enough, they go up for sale. If he doesn't love it, he doesn’t sell it. The high cost of manufacturing through-hole boards in relatively small quantities make these boards premium-priced products relative to their bill of materials. Extensive use of configuration solder jumpers and passive add-on parts maximize value and convenience. Try one out and you’ll see why I get so many repeat buyers.