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Jul 29th, 2025
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  1.  
  2. ### 1 - Baseline - No camera connected, no terminal session.
  3.  
  4. --- Current (A) ---
  5. Max: 0.2170
  6. Mean: 0.1471
  7. Median: 0.1420
  8. Min: 0.1410
  9. Range: 0.0760
  10. --- Power (W) ---
  11. Max: 1.0867
  12. Mean: 0.7357
  13. Median: 0.7106
  14. Min: 0.7044
  15. Range: 0.3823
  16. --- Summary ---
  17. Duration (s): 67.5201
  18. Entry Count: 676
  19. --- Voltage (V) ---
  20. Max: 5.0100
  21. Mean: 5.0022
  22. Median: 5.0030
  23. Min: 4.9960
  24. Range: 0.0140
  25.  
  26. ### 2 - Baseline - No camera connected, terminal session (nothing running)
  27. --- Current (A) ---
  28. Max: 0.3360
  29. Mean: 0.2263
  30. Median: 0.2170
  31. Min: 0.2140
  32. Range: 0.1220
  33. --- Power (W) ---
  34. Max: 1.6837
  35. Mean: 1.1330
  36. Median: 1.0863
  37. Min: 1.0706
  38. Range: 0.6131
  39. --- Summary ---
  40. Duration (s): 60.2934
  41. Entry Count: 604
  42. --- Voltage (V) ---
  43. Max: 5.0160
  44. Mean: 5.0066
  45. Median: 5.0060
  46. Min: 4.9990
  47. Range: 0.0170
  48.  
  49. ### 3 - Camera connected, idle, no terminal session
  50. --- Current (A) ---
  51. Max: 0.2230
  52. Mean: 0.1483
  53. Median: 0.1440
  54. Min: 0.1420
  55. Range: 0.0810
  56. --- Power (W) ---
  57. Max: 1.1168
  58. Mean: 0.7417
  59. Median: 0.7200
  60. Min: 0.7097
  61. Range: 0.4071
  62. --- Summary ---
  63. Duration (s): 60.4787
  64. Entry Count: 606
  65. --- Voltage (V) ---
  66. Max: 5.0100
  67. Mean: 5.0022
  68. Median: 5.0030
  69. Min: 4.9950
  70. Range: 0.0150
  71.  
  72. ### 4 - Camera connected, idle, terminal session nothing running
  73. --- Current (A) ---
  74. Max: 0.3180
  75. Mean: 0.2285
  76. Median: 0.2190
  77. Min: 0.2160
  78. Range: 0.1020
  79. --- Power (W) ---
  80. Max: 1.5941
  81. Mean: 1.1441
  82. Median: 1.0959
  83. Min: 1.0802
  84. Range: 0.5139
  85. --- Summary ---
  86. Duration (s): 60.4808
  87. Entry Count: 606
  88. --- Voltage (V) ---
  89. Max: 5.0150
  90. Mean: 5.0071
  91. Median: 5.0080
  92. Min: 5.0010
  93. Range: 0.0140
  94.  
  95. ### 5 - Capturing images using
  96.  
  97. ```
  98. for i in {1..60}; do
  99. libcamera-still -n -o /tmp/camtest/image_$i.jpg --width 4608 --height 2592 --quality 95 --timeout 1000
  100. done
  101. ```
  102.  
  103. --- Current (A) ---
  104. Max: 0.6040
  105. Mean: 0.3909
  106. Median: 0.3960
  107. Min: 0.2180
  108. Range: 0.3860
  109. --- Power (W) ---
  110. Max: 3.0430
  111. Mean: 1.9623
  112. Median: 1.9879
  113. Min: 1.0924
  114. Range: 1.9506
  115. --- Summary ---
  116. Duration (s): 66.9204
  117. Entry Count: 672
  118. --- Voltage (V) ---
  119. Max: 5.0380
  120. Mean: 5.0193
  121. Median: 5.0200
  122. Min: 5.0050
  123. Range: 0.0330
  124.  
  125.  
  126. ## 6 - Preview load
  127.  
  128. running
  129. ```
  130. libcamera-hello -t 60000 --nopreview
  131. ```
  132. --- Current (A) ---
  133. Max: 0.5280
  134. Mean: 0.3934
  135. Median: 0.4130
  136. Min: 0.2250
  137. Range: 0.3030
  138. --- Power (W) ---
  139. Max: 2.6532
  140. Mean: 1.9752
  141. Median: 2.0712
  142. Min: 1.1261
  143. Range: 1.5271
  144. --- Summary ---
  145. Duration (s): 60.3449
  146. Entry Count: 605
  147. --- Voltage (V) ---
  148. Max: 5.0310
  149. Mean: 5.0200
  150. Median: 5.0200
  151. Min: 5.0050
  152. Range: 0.0260
  153.  
  154. ## 7
  155. video capture to null
  156. ```
  157. libcamera-vid -t 60000 --nopreview -o /dev/null --width 1920 --height 1080 --framerate 30
  158. ```
  159.  
  160. --- Current (A) ---
  161. Max: 0.5980
  162. Mean: 0.4509
  163. Median: 0.4650
  164. Min: 0.2230
  165. Range: 0.3750
  166. --- Power (W) ---
  167. Max: 3.0038
  168. Mean: 2.2656
  169. Median: 2.3366
  170. Min: 1.1168
  171. Range: 1.8870
  172. --- Summary ---
  173. Duration (s): 60.2962
  174. Entry Count: 604
  175. --- Voltage (V) ---
  176. Max: 5.0360
  177. Mean: 5.0238
  178. Median: 5.0245
  179. Min: 5.0080
  180. Range: 0.0280
  181.  
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