Electronic enthusiasts and Raspberry Pi users may be interested in a new PCB ruler created by Ian Dunn. The PCP ruler features plenty of useful annotations, equations and Raspberry Pi GPIO references.

It’s always good to get reader submissions on MbM, so thanks to Ian P for sending this one in. It’s a little “PCB ruler” that is embellished with markings to indicate trace width, a wire gauge chart ...

Like [Brad], we’ve seen a number of PCB rulers out there. [Brad] was looking to take the idea and run with it. His DigiRule is a ruler with a logic gate simulator. What he built is a mash-up between ...

Bradley Slattery has returned to Kickstarter once again to launch his latest electronic device in the form of the Digirule 1A and 2A interactive binary rulers, designed to enable owners to program in ...