My Hobby Tech spread continues in Issue 143 of Dennis Publishing’s Custom PC Magazine with two reviews and a review-slash-walkthrough: the Orange Pi Plus, the GrovePi+ Starter Kit, and the Kim Uno kit.
For me, the most interesting toy of the month was undoubtedly the Kim Uno. Designed by Oscar Vermeulen, the Kim Uno is a kit-form microcomputer designed to emulate the classic MOS Technologies KIM-1, designed by Chuck Peddle to showcase the company’s at-the-time cutting-edge 6502 microprocessor. Naturally, there’s no 6502 to be found in the Kim Uno: instead, an Arduino Pro Mini – based on one of Atmel’s popular microcontrollers – sits at the rear of a calculator-sized circuit-board and provides the grunt required to run any KIM-1 application you care to name, including the famous Microchess.
A simple solder-it-together kit – or pay extra to have one built by Oscar’s own fair hand – the Kim Uno is a great way to practice your skills even before you tackle the joys of 6502 machine-code programming. Oscar’s online documentation is thorough and detailed, and for anyone who knows 6502 the Kim Uno is a must-have especially at just £10 plus shipping.
The Kim Uno was the most fun project of the month, but it was closely followed by a GrovePi+ Starter Kit kindly supplied by Dexter Industries. Designed to bring Seeed’s Grove ‘smart module’ design to the Raspberry Pi, the kit includes a piggyback board which connects to the Pi’s GPIO port and a wealth of additional inputs and outputs, all of which connect via simple keyed wires. For newcomers to electronics, the Grove platform takes the complexity out of wiring up even relatively complex projects – and the GrovePi+ board itself makes using Grove hardware a cinch.
Finally, the Orange Pi Plus is one of the growing number of would-be Raspberry Pi beaters coming out of the technology markets of China. Using the AllWinner H3 system-on-chip processor the Orange Pi Plus can’t match the performance of the latest Raspberry Pi 2 Model B, but it does offer significantly more built-in capability: SATA, gigabit Ethernet, infra-red, even 802.11b/g/n wireless with bundled ultra-compact dipole antenna. The Orange Pi Plus, and the other members in the Orange Pi family, are clearly inspired by Lemaker’s Banana Pi and offer much of the same software compatibility, including platforms like Android not supported by the Raspberry Pi itself.
If you want to know my final opinion on all this hardware, or if you’re for some reason interested in things written by people who aren’t me, Custom PC Issue 143 is available now in print or digital form.