Protocol Interfaces

Ollie v2

An even better all-in-one USB to isolated-UARTx2/CAN/RS485/RS232 converter

$9,497 raised

of $1 goal


Back this project to help bring it into existence.
Funding ends on Oct 11, 2023 at 04:59 PM PDT.


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As with the original version of Ollie, Ollie v2 is an isolated, multifunction interface module and USB-to-isolated-UARTx2/CAN/RS485/RS232 converter. This versatile device combines our most commonly used interface modules into one safe, reliable, compact, and affordable package.

Ollie v2 prioritizes safety through isolation, which will save your computer from damage if things go wrong when you’re interfacing with high voltage devices.

Ollie v2 is the perfect tool for hackers and field engineers; a compact device to keep in your tool box whether you’re traveling, hacking your car, or just need quick access to a power supply without worrying about damaging your laptop.

The main objective of this project is turning this mess of wires (left) into a neat and useful device (right)!

What’s New in v2?

This latest version of Ollie comes with a host of improvements:

Features & Specifications:

Use Cases

We designed Ollie v2 as the perfect multi-tool for hackers and field engineers; to be a "Swiss Army knife" of interface modules. With that in mind, Ollie v2 can be used in a wide range of situations, but here are some ideas of where we think it will be useful.

Custom Enclosure

Ollie v2 comes with a plastic protective enclosure, so you can feel safe using it in any situation.

Custom DB9 Adapter

With the optional DB9 v2 adapter, Ollie v2 is easily attached directly to a DB9 cable. Note that the DB9 v2 adapter is not compatible with the original Ollie, nor is the original DB9 adapter compatible with Ollie v2.


Ollie v2 OllieCANABLE PRO╬╝ArtWaveshare USB TO RS232/485/TTLDFRobotMulti USB/RS232/RS485/TTL
IsolationYes Yes No Yes Yes No
USB-CYes No No No No No
Plastic EnclosureYes No No No No No
Isolated UART2x UART 2x UART No 1x UART 1x UART Non-isolated
Voltage level UART1.8 V, 3.3 V, 5 V or target 1.8 V, 3.3 V, 5 V No Target 3.3 V, 5 V No
UART Max Date rate6 Mbps 12 Mbps No 3 Mbps 0.9216 Mbps 2 Mbps non-isolated
Isolated CANYes Yes Yes No No No
Isolated RS485Yes Yes No No Yes Non-isolated
Isolated RS232Yes Yes No No Yes Yes
Isolated USB DownstreamNo Yes No No No No
Isolated USB CurrentNo 200 mA No No No No
Isolated Power OutNo 1.8, 3.3, 5 V No No No Non-isolated 5 V
Multifunction DB9 ConnectorYes Yes No No No No

Support & Documentation

Pinout Diagram

Manufacturing Plan

Ollie v2 will be manufactured by a trusted partner we’ve been working with for years across multiple products.

Fulfillment & Logistics

After production, Ollie v2 will be shipped to Crowd Supply’s fulfillment partner, Mouser Electronics, which will deliver to backers worldwide. Additional information about Crowd Supply’s fulfillment service can be found in the Ordering, Paying, and Shipping section of their guide.

Risks & Challenges

One lesson we’ve learned from past campaigns is that there’s always a possibility of delays. To mitigate this risk, we’ve proactively secured the most crucial components for the initial batch. We’re committed to making every effort to ensure timely shipment.

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Produced by MeatPi Electronics in Melbourne, Australia.

Sold and shipped by Crowd Supply.

Ollie v2

USB to isolated-UARTx2/CAN/RS485/RS232 converter

$60 $8 US Shipping / $18 Worldwide

DB9 v2

DB9 pluggable connector for use with Ollie v2

$10 $8 US Shipping / $18 Worldwide

About the Team

MeatPi Electronics

Melbourne, Australia  ·  meatpiHQ  ·  meatpiHQ  ·

Ali makes hardware tools.

See Also

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