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Changes for page Front I/O

Last modified by Kevin Wiki on 2024/07/07 22:48
From version 1.3
edited by Kevin Wiki
on 2024/07/04 13:31
Change comment: There is no comment for this version
To version 2.4
edited by Kevin Wiki
on 2024/07/04 21:06
Change comment: There is no comment for this version

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94 94  
95 95  We have two sets of chips, one for left and one for right where we have two different i2c chips on each side for controlling lights. Since the chips controlling their respective parts have the same address for each side, we can't distinguish them from each other. To handle this we use a i2c multiplexer to selectively communicate with one half at a time, switching TCA9548 between two different output ports.
96 96  
97 -
98 98  === Code example finding i2c ports ===
99 99  
100 100  To verify wiring, connection, output ports and device addresses run the following script:
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151 151  {
152 152  }
153 153  {{/code}}
153 +
154 +== Pinouts voltages from MLB ==
155 +
156 +Powered off:
157 +
158 +* PWR fail LED - 0.00 V
159 +* UID LED - 4.5V
160 +* OH/Fan fail LED - 4.72 V
161 +* NIC1 LED - 0.8 - 2.6 V
162 +* NIC2 LED - 2.95 V
163 +* UID SW - 2.8V
164 +* HDD LED - 0.00 V
165 +* Power LED P3V3 - 0.00V
166 +* Power LED - 0.00 V after unplug grows
167 +
168 +Powered on:
169 +
170 +* PWR tail LED - 3.47 V
171 +* UID LED - 4.85V
172 +* OH/Fan failed LED - 5 V
173 +* NIC 1 LED - 1.2 - 2.9 V
174 +* NIC 2 LED - 3.2 V
175 +* UID SW - 3V
176 +* HDD LED - 3 V
177 +* Power LED P3V3 - 3.30V
178 +* Power LED - 0.87 V
179 +
180 +
181 +
154 154  )))
155 155  
156 156  
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165 165  
166 166  [[image:[email protected]]]
167 167  //Figure 2: [[Waves>>https://commons.wikimedia.org/wiki/File:Culebra_-_Playa_de_Flamenco.jpg]]//
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168 168  )))
169 169  )))