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product:usb2ax:specs
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product:usb2ax:specs [2013/04/02 04:03] xevel [Bill Of Material] |
product:usb2ax:specs [2017/07/27 08:04] (current) xevel |
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| ===== USB2AX: Technical Specifications ===== | ===== USB2AX: Technical Specifications ===== | ||
| - | The hardware of the USB2AX is relatively simple: only 17 components and a 16x20mm PCB. | + | //This page is currently referring to v3.1a, and will be updated with infos for v3.2a at some point, maybe. Refer to the source files if you need to be sure.// |
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| + | The hardware of the USB2AX is relatively simple: only 17 components and a 15x20mm PCB. | ||
| {{product:usb2ax:USB2AXv31_front_euro_s.jpg}} | {{product:usb2ax:USB2AXv31_front_euro_s.jpg}} | ||
| - | At its core is an ATMega32u2, an USB-enabled 8bit MCU with 32KB of FLASH, 2.5KB of RAM and 1KB of EEPROM, running at 16MHz. | + | At its core is an ATMega32u2, an USB-enabled 8bit MCU with 32KB of FLASH, 1KB of RAM and 1KB of EEPROM, running at 16MHz. |
| The USB2AX v3.1 has a double LED (Red/Green), ESD protection on both connectors (USB and serial), 0.1" breakout pads for RST, GND, HWB and the 4 SPI pins (PB0 to PB3). | The USB2AX v3.1 has a double LED (Red/Green), ESD protection on both connectors (USB and serial), 0.1" breakout pads for RST, GND, HWB and the 4 SPI pins (PB0 to PB3). | ||
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| {{product:usb2ax:usb2ax_v3.1_schematics.png}}\\ | {{product:usb2ax:usb2ax_v3.1_schematics.png}}\\ | ||
| - | [[https://paranoidstudio.assembla.com/code/paranoidstudio/git/nodes/master/usb2ax/elec|All Eagle files]] | + | [[https://github.com/Xevel/usb2ax/tree/master|All Eagle files]] |
| The protection circuitry for DATA, with the zener diode and PTC resistor, comes from the [[http://ruggedcircuits.com/html/ruggeduino.html|Ruggeduino]], and makes it possible to withstand applying 12V to DATA indefinitely. More detailed explanation of how it works [[http://forums.trossenrobotics.com/showthread.php?5675-USB2AX-v3.1&p=53101#post53101|here]]. This situation can easily happen in real life with a shoddy custom or damaged cable, and improper protection could result in a fried motherboard... | The protection circuitry for DATA, with the zener diode and PTC resistor, comes from the [[http://ruggedcircuits.com/html/ruggeduino.html|Ruggeduino]], and makes it possible to withstand applying 12V to DATA indefinitely. More detailed explanation of how it works [[http://forums.trossenrobotics.com/showthread.php?5675-USB2AX-v3.1&p=53101#post53101|here]]. This situation can easily happen in real life with a shoddy custom or damaged cable, and improper protection could result in a fried motherboard... | ||
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| | 12 | D1 | 1 | Zener diode for DATA overvoltage protection | 5.1V | SOD-923 | | | 12 | D1 | 1 | Zener diode for DATA overvoltage protection | 5.1V | SOD-923 | | ||
| | 13 | LED1 | 1 | Double LED | Green/Red | C0603 | | | 13 | LED1 | 1 | Double LED | Green/Red | C0603 | | ||
| - | | 14 | U2 | 1 | ESD protection | | XSON6 | | + | | 14 | U2 | 1 | ESD protection | IP4282CZ6,115 | XSON6 | |
| | 15 | | 1 | Heat-shrink tubing (diam:12,7mm)(length:24mm+/-1mm)(TRANSPARENT) | | | | | 15 | | 1 | Heat-shrink tubing (diam:12,7mm)(length:24mm+/-1mm)(TRANSPARENT) | | | | ||
| ==== Mechanical ==== | ==== Mechanical ==== | ||
| - | Size: 16mm x 36mm x ~7mm (without heat-shrink tubing) | + | Size: 15mm x 36mm x ~7mm (without heat-shrink tubing) |
| [[http://www.xevel.fr/other/usb2ax_v3.1.stl|3D CAD file (stl)]] | [[http://www.xevel.fr/other/usb2ax_v3.1.stl|3D CAD file (stl)]] | ||
product/usb2ax/specs.1364868217.txt.gz · Last modified: 2013/04/02 04:03 by xevel
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