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====== mnmlCore ====== we want to create a small STM32F4 based Board (for example 10x4cm in size), with limited Pins/sockets...\\ [[FantomXR]] had made such a thing before, so we start with his working design, and invest some time in it\\ see also this article: [[http://midibox.org/forums/topic/20732-another-midibox-core/?page=1|Another Midibox Core]] ===== Introduction ===== ...\\ ===== a Name ===== mnmlCore, miniCore32, 10x4CORE, RFcore, fundimentalCore, basisCore, baseCore, XRcore, midicore ==== Features ==== the original [[FantomXR]] Board: - **Size V0:** 98,5mm x 48,5mm \\ - **Micro-SD-Slot**(flat @back on the board)\\ - **J8/9 SRIO** (for normal shiftregisters)\\ - **Midi A+B** (+HiSpeed? )(need external Optocoppler)\\ - **J30 Displays**(need external HC595)\\ - **Bootloader-Switch**(for program-alphas...debug)\\ - **onboard-Voltage-Regulator** (5V input regulated to 3,3V)\\ - **USB over Pinheader** (no onboard-socket)\\ - **USB-Power-Jumper**\\ - **J6+J7 - Pedals+Fader**:"for an AINSER64-like-analog-scanning", "I made some pcbs with faders which I connect directly to that connectors" \\ - **SWD-Header** (to program BOOTLOADER into board by using for a example a Discovery-Board)\\ - **Reset-Header**\\ ====== PCB ====== [[FantomXR]] made some improvement in his other projects, so we also should change this things:\\ "For example I changed:\\ the oscillator to SMD\\ all none-VDD-traces to 0.2032mm\\ all vias to round-style and 0.32mm diameter.\\ all 0603 SMD parts to 0805. removed the ID-pin from USB.\\ added an inductor behind the USB connector for EMC-improvements\\ " ====== Hardware Requirements ====== * a jtag programmer (or a Discovery Board) * Soldering Iron, Wires, PCB....\\ * USB Power Supply ====== Design Concepts ====== phatlines idea with onboard-split-cut MidiIO: {{:phatline:desing-concept-midi-port.jpg?1000|}}\\ ===== Resources ===== [[http://midibox.org/forums/topic/20899-mnmlcore/|Forum to discuss]]\\ ====== Community users working on it ====== * **[[Phatline]]** = Documentation, PCB-layout-or at least give it a first try...\\ Just let a Private message on the forum to user already involved
