The initial concept offered an on-ramp for longtime Arduino tinkerers entering the workforce. It’s also aimed at moving beyond prototyping into production for runs of fewer than 100,000.

Arduino has shrunk the UNO R4 with the Arduino Nano R4 board equipped with the same 48 MHz Renesas RA4M1 32-bit Arm ...

Arduino has a growing professional talent pool, with two out of every five professional engineers identifying Arduino as one of their core skills on LinkedIn — that’s more than 680,000 ...

The focus will be on growing enterprise application libraries and the Arduino Cloud for Business, both of which are integral to the company’s expansion plans. Watch this video on YouTube.

So he used an online service to design his on Analog input expansion boards. He mentions that Eagle can be a bit of a pain to work with. For this project he decided to give circuits.io a try.