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| tech:3d_huxley [2016/12/29 14:29] – bullar | tech:3d_huxley [2026/08/12 12:15] (current) – external edit 127.0.0.1 | ||
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| ====== HUXLEY ====== | ====== HUXLEY ====== | ||
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| Frame: [[https:// | Frame: [[https:// | ||
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| In order to get rid of the USB connection between Melzi and the PC one may like to use Bluetooth. There is a cheap module available in the market called ' | In order to get rid of the USB connection between Melzi and the PC one may like to use Bluetooth. There is a cheap module available in the market called ' | ||
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| ===Change setting=== | ===Change setting=== | ||
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| On Melzi one of the unused buffer of soldered IC 4050D takes over the mandatory level-shifting (5V -> 3.3V). Overall only 5 wires have to be soldered. Note that the TXD outputs are connected in parallel which is not recommended. On Arduino boards the serial chip is connected to the main IC via 1kOhm resistors for this reason. This are not present in the Melzi board design. | On Melzi one of the unused buffer of soldered IC 4050D takes over the mandatory level-shifting (5V -> 3.3V). Overall only 5 wires have to be soldered. Note that the TXD outputs are connected in parallel which is not recommended. On Arduino boards the serial chip is connected to the main IC via 1kOhm resistors for this reason. This are not present in the Melzi board design. | ||
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| ===Connect via Bluetooth=== | ===Connect via Bluetooth=== | ||
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| The solution is described on [[http:// | The solution is described on [[http:// | ||
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| Radial fan: [[http:// | Radial fan: [[http:// | ||
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| In order to get for print area (Z dimension) I positioned the PCB in top. The original printed PCB holder (4pcs.) ate reused. The PCB is mounted on a laser-cutter 1.5mm thick [[http:// | In order to get for print area (Z dimension) I positioned the PCB in top. The original printed PCB holder (4pcs.) ate reused. The PCB is mounted on a laser-cutter 1.5mm thick [[http:// | ||
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| See [[http:// | See [[http:// | ||
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| === I2C -> LCD converter (LMC1602) === | === I2C -> LCD converter (LMC1602) === | ||