mbhp_genesis_ls
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mbhp_genesis_ls [2016/01/29 18:07] sauraen |
mbhp_genesis_ls [2016/11/22 19:02] sauraen |
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| - | ====== TODO under construction! ====== | + | ====== MBHP_Genesis_LS ====== |
| - | ===== Buffer circuit ===== | + | This is the schematic for the breakaway MBHP_Genesis_LS board included with the MBQG_FP front panel board. This should be sufficient for anyone to build a copy of this circuit on prototype board. |
| + | {{http://midibox.org/forums/uploads/monthly_2016_04/large.mbhp_genesis_ls.png.9b8e551b7d5d2244df873eeb7107f1e0.png}} | ||
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| + | ===== Explanation ===== | ||
| When using the MBHP_Genesis module with a MCU supplied at less than 5V, especially when using several modules in parallel, a buffer circuit will be required between the MCU and the modules. This is a very simple circuit that consists of two 20-pin 74HCT series ICs and two power supply bypass capacitors, and can easily be built on prototyping board. | When using the MBHP_Genesis module with a MCU supplied at less than 5V, especially when using several modules in parallel, a buffer circuit will be required between the MCU and the modules. This is a very simple circuit that consists of two 20-pin 74HCT series ICs and two power supply bypass capacitors, and can easily be built on prototyping board. | ||
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| Both buffers must be powered from +5V, not +3.3V or whatever the MCU uses. In addition, the MCU must be tolerant of 5V signals being applied to its I/O pins (the CORE_STM32F4 module is tolerant)--otherwise it will damage the MCU! | Both buffers must be powered from +5V, not +3.3V or whatever the MCU uses. In addition, the MCU must be tolerant of 5V signals being applied to its I/O pins (the CORE_STM32F4 module is tolerant)--otherwise it will damage the MCU! | ||
| - | Post on the forum or PM me if this is confusing and you want me to draw a schematic. | + | ===== Parts List ===== |
| - | A MBHP_Genesis_LS board is included as a breakaway portion of the MBQG_FP front panel board, so anyone purchasing a front panel board gets the level shifter board for free. No other manufactured board will probably be produced for it. | ||
mbhp_genesis_ls.txt · Last modified: 2016/11/22 19:22 by sauraen
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