Very interesting question!
I've also been a bit puzzled by all the NC components and what benefit the P24 circuit would bring it it had been populated. Come to think of it, given the way so many footprints were included on the silkscreen I'm also a little curious why I cannot find the gaps for the unpopulated components.
On other words, I can't really answer but am definitely interested!
I tried to understand the schematic.
It looks like VDD is only powering :
- the Accelerometer
- the Heart Rate sensor
That would then make sense to be able to completely take them out.
Accelerometer is rated 13 μA when off.
Heart Rate sensor max 0.1uA when sleeping.
That is still something useful if we want to get extra long battery life.
But I don't know how the Mofset is working (electrically speaking). What happens when P24 goes HIGH or LOW ?
[img]data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZMAAADWCAYAAAAU/m8KAAAgAElEQVR4Ae2dCXgURdrHPRBQIYEAYoBAhEDCKYeC4oKCAt4C4ioiy+0Kiq7gsSBfuMIhKKAgiiCCF6cCQoBVEBBEBJHlUDliBBEiYOQysmS65/2et3pq0jPTk8xkZjI93f96ns50V1VXV/3eTv27ru5LCA4EQAAEQAAEQiRwSYjn43QQAAEQAAEQIIgJbgIQAAEQAIGQCUBMQkaIBEAABEAABCAmuAdAAARAAARCJgAxCRkhEgABEAABEICY4B4AARAAARAImQDEJGSESAAEQAAEQABignsABEAABEAgZAIQk5ARIgEQAAEQAAGICe4BEAABEACBkAlATEJGiARAAARAAAQgJrgHQAAEQAAEQiYAMQkZIRIAARAAARCAmOAeAAEQAAEQCJkAxCRkhEgABEAABEDAdGKyadMmmjt3LqmqamidFStW0PLly91hFy9epC+//JIyMjJo9uzZlJOT4w7z3jl16hR9/PHHNGLECMrMzKQLFy54RxHH2dnZIg87duzwyYfT6RTX++CDD+jIkSOG58MTBEAg+gR++eUXeuedd+inn34yzMyePXtE+L59+8Qvx+Xt3XffFfXEr7/+6nPe5s2bPeK+//77tHr1avrf//7nE5c9zp8/T4sWLaI1a9bQuXPnfOIUFe5zgok9TCcmb775Jl1yySW0fv16H2y///47lS5dmp5//nkRtmvXLkpISBDxa9SoQVdffTVdeuml9Mgjj/icO3nyZBF22WWXUZ06dcT+VVddRSwKete5c2eRXrVq1cRvly5d3DcKiwxfh/NQuXJluvzyy2nOnDn607EPAiBgEgK//fYblSpVip544gnDHN1555103XXX0SeffCL+17nu4P9prn944//zIUOGeJzbvXt3Ecbx9HG5vli5cqVHXH64vfLKKyk+Pl6klZSURD/++KM7TlHh7ogxsmM6MTlz5owwQJ8+fXwQTp8+XRhy//79wihVqlSh5s2bEz9ZsOOng4kTJ4o4/HQhnRSoZ599lk6ePCm8+UZr3769MLR8AuFWD99E3Gpht3TpUnG8ZMkScfzYY49RzZo1iUXN4XBQjx49RF79tXDESfgDAiAQNQL8cMgPnPn5+R55OHbsmBAD7tFYtmyZ+D//9ttvRRyuRw4ePEgPPPCA8OfWinQsJixA0p0+fZo2btwoHjJZNLg1xI5bIfzA2b9/f1FXcK9I1apV6aGHHgooXKYfS7+mExOG17NnT4qLi/PphrrhhhuoTZs2gu/TTz8tWiKHDh3y4M3dUHwTcBrSJSYmUtu2bX26rLj527hxY5o3b56Iyk8WI0eOlKcRiwyLy/jx44nTnTBhgmj+yghTp04V4d55kOH4BQEQiC4B/p/m/2F+UNS7l19+WYgJ/497i4mMpygKtWjRQoiC9PMWE+nP4sPXka2grKwseuGFF+jw4cMyCrVu3ZqaNm0qjosKd58UQzumFBMeN2HDLF682I3y+++/F37z588Xfi1btqQ77rjDHe5vh8c1OK1Zs2b5i+Ljz08x3Dd63333UdmyZWn37t0ecf744w+RN262Nm2i3RweEXAAAiBgCgIsCNwFJVsEMlMNGzake++9Vxz6ExMOfO6550T9wS0Zdv7EhMOSk5OFYIiIuj8HDhwQD6RcD3FLyNsVFe4d36zHphQThpWSkkLcRJWOVZ6bkX/99RfxDcL9mYMGDZLBfn95wJ2NuGHDBr9xvAPWrl0rzuHzuCvLu4nct29fdzh3hcGBAAiYl8CwYcPEQ+HZs2dFJnliDf9vy4k8hYnJwoULRVw5hluYmDz44IMerRhJpHz58iINfvg8evSo9Hb/FhXujmjyHdOKCXcpsWDk5uYK8eCnC714XHvttT5PG0asuYXBN44c9zCK4+2Xl5cnZoW9/fbbIg/e4zecJ36akKLCszngQAAEzEmAu6F5cJ1nibJ76qmniLu+edyTXWFiwudw/bF9+3YRtzAxueuuu0TrRETU/eEZpp9//jk1adJEjN/wDFS9KypcH9fM+6YVk+PHj4s+zbfeeotkS+G7775zs7znnnuoQYMG7mP9zsyZM8UNw4NgPPWOZ3Dpx0JkXJ5+3Lt3b+JrSOc9JZmbxzyAJ/3lL8f/888/iZ8qBgwYIE/HLwiAgAkJ3HrrrXT77bcTV+Q8MM6tFekKE5OhQ4cKMeFJN+z8iQmPqXI3V7t27WSy7jpDevADLQvTZ599Jrz0dQl7eIfL82Ll17RiwgB5zIKNw4PpPGtL71599VVhGP2sLQ7nWVpcwfNTgnStWrUSN5B+MIzD+Fw2rkyDhSU1NdXjJujUqZPoXmNR4tkY+puQZ2hw66lfv37yUvgFARAwIYH33ntPPFTyVH5upfAAuHT+xIQfaLku0QuEPzGRLRieOcqOB/yvuOIK0j8A87W5vuGH46LCZd5i6dfUYsJ9mjyXmwfBubWhdzxuwhV9mTJl6KWXXqJ169YRz67i2Vnsp79ZeJ9bF2lpaTRjxgyxhoXnj1esWFEMmPFTBbstW7YIYw8fPpx4+jHP+OAbb+DAgSL8mWeeEcLC+eJphLwGhcNlf6o+f9gHARAwDwEea+UxV16LphcHzqEUk/T0dDGzkwXhxRdfJO5K57Vo27ZtcxeExYRbNjwDlLcpU6ZQr169RD3VrFkz9wxUHmfllgq3iHbu3ClmgfL6NvbjHo2iwt0XjKEdU4sJ92lKg/L6E2/Hs6q4i4kH61nxeWNj8aC7t+NV8jygzwIi43bs2NFDdPgcvol4oRPH4e4xnifOYyjsuNXDU4zl+SxQclqx9/VwDAIgYC4C/FDI/7sffvihR8bk+jL5f83/9zxGyz0jeiHhk1hMZDz+5Qddrn8GDx4sxnf1CXMLhOsvGZ+nGcs1cRyvqHB9WrGwb2oxCQYgT907ceJEkadwPyW3VPjpwJ/jpxgeYOdfI8cLH3mNinefp1Fc+IEACNiXANcRXFfIxdLeJIoK945v5mPLiImZISNvIAACIGB1AhATq1sY5QMBEACBEiAAMSkByLgECIAACFidgPXF5K+/SH1nLinDXiJl1BhyfrnZ6jZF+UAABCJEQP3iC1JGjiZl+AhRr1AhY68RyoJpk7W0mKifLCOlegopcdU9txY3kXP/AdMaBRkDARAwFwHnnr2kXH+DZz3C9UrV2qROn2GuzEYpN5YVE+c320mpVIuU1CakLllKdOYMOQ8fISVjPClVkkmplUbOgwejhB2XBQEQiBUCzr37tIdSFo6XJ5Hzl6NEp8+QeFi9sbUQGHXK1FgpTsTyaVkxUTrdLZ4anAZfWXNu3kJKQk1SunSLGFgkDAIgYA0CSse7xAOoc/sO3wLl5ZHStj0pFZLI6XqzsG8ke/hYU0x+/10YV+n/uF8rKv0GkBKfpD1l+I2FABAAATsT4O5w0U3+zLN+MTi/+UaLM2qM3zh2CLCkmDi3bdOanvPf82tD9dNPtTiZeOOvX0gIAAGbE1AXLtLqiS++KJSEUjOVlAceLDSO1QOtKSauJwV1TsHnNr0NyeMo/MShQky80eAYBEDARUBdtFirJ9as9c/E6SSlWgopnSEm/iHFasiff5JSOZmUbn/3WwLl/i4iDuXm+o2DABAAAXsT4HEQpUJNUnoUfAbcm4i6apUmOK+97h1kq2NLtkzYgspj/9AGxTZv8TEot1hEP+jAJ33C4AECIAACegJKz96kxNUg7vLyds5ffyUlpaGY7EPnznkH2+rYsmIijJxUj5TEFFLfni2m8jkPZZEy+BlS4muQ0vIWItdnPG1lcRQWBEAgOAL8tVdeY1IhiZQhz5EzO5vojz9InTtPE5KKNUld+5/g0rRgbMuKCdtKDMQ3aKa1QvQLF+/vQs6TJy1oThQJBEAgEgREd9ed9/jWJSkNSV25MhKXjLk0LS0mwhoOB6nz3yOlXQetX7OIWRkxZ0FkGARAoMQIiGnALW8hhVsj739AlJ9fYtc2+4WsLyYuCyhjxwkxcR4/bnabIH8gAAImJqD07S8WPZs4i1HJGsQkKthxURAAgVglADExthzExJgLfEEABEDAkADExBALQUyMucAXBEAABAwJQEwMsdhITMZkYMzE+B6ALwiAQBAEHH36kaNizSDOsEdU27RMjnR/nBzlq9P/fvnVHpZFKUEABCJC4EirTvRnXFJE0o7lRG0jJpteepPmlm5G547/Hsv2Qt5BAASiTCDzkeE0++pWUc6F+S5vGzHZMHY+jSx9G8TEfPcgcgQCMUVgWd+JNKZ8x5jKc0lkFmJSEpRxDRAAAcsQgJgYmxJiYswFvhYmsOu/x6h3v088tv6PL6PhIz6nfft+Myz5wkV76B99ltL0GV/7hOfknKNnh2RSxrgNdOzYWZ/wSHrMm/8dcd7XrvX8BPXr07d6lI/LO/S5NfTBh7vp/PmLkcyS5dOGmBibGGJizAW+FiYwcvQ6KlUunUqVT6dSca6Nj11+0177yl36zNUHqHSFUe4wjlOl+gS6cMEh4rDAyPP4t3T8SOJzIu1yc/+kqyqN1q7NZSiXTn9/eIH7silpUwrCvMoYd00GHTx0yh0XO8ERgJgY84KYGHOBr4UJSDGZ9fZ2dynz8i7S1GlfiQq4fJWxbv96DacKMdn2zS+kqir16LlYxOnV92PRCmFBSm00TYjL/gMnhUDVrP2K+/xI7bRq/aa41px3tO+St7z5TZGv3XtyxCVZTFjY9C4r63fqdNc8Ee/e+9/XB2E/CAIQE2NYEBNjLvC1MAEjMZHFTa77qqhsHQ6VWGC4FdK120cyWHQRcSugRcuZtP6Ln4gr9S1bDrvD46/JoKsrRf5b4NxaatS04GNMQsjKpVO3h7S8GokJZ/LiRYcoH5cTrngEICbG3CAmxlzga2EC/sSEx0VKxY2karUm+S09j6uwmPAYhN7xmIV86r+j07v6oLDvS0Ho3sPzY03cEmnRaqa4npGY8HndH10o8j/4abw2vbiGgZgYk4OYGHOBr4UJSDHhLiqugHljgeCtTIVRYpDaqPhbvz4i4l6ZMNpnEFuez2lt337U6PSw+XH6fL1n/rXKI00eQ6ldb4rwk2Mmsnz6MrJYnj59weNcHAROAGJizApiYswFvhYmIMWkUdPpdNfd86nh9a+5hYRnZhm5JUv3ilYLdy9t2JjtE4XHKiZN+lIbFC+f7iM2PieE4LFz5zGR36ef8RSTsgmjqX7jaSJlKSZ33/sedbhzHlVKHC/OkS2XEC5v+1MhJsa3AMTEmAt8LUxAiol+AJ6nzfLTfp1U7cleX/w3Zm4TYdwi4WnFesdjK3on05k4cZPemzrc66CKKfnU7VFtFphHYJAHR37Jp1LlR9JViZspO9vpPptnpnFXGzvvbi6ePFAr5RVRjn8Pxydm3dCKsQMxMYZmCzFRBymU1+AcnahzhM69+4cxCfjahoCRmHDh+ameBUU/HsLrStiPn+yPHvVcQyLHTz5asNvNjmd5cfxx4ze4/QY/qwkJiwlvg54uvqCcPuOkqg3yqXSFaVSm8gKqlJZPOTlOsc6Eryu7vrzFhDPD+ZfdXTt24B11bgMFseP8VKVdjdbSmmveIPVdzweJIJKxZFTLi4nSQCElrWBzpDlIuVGxpDFRqMAI+BMTXnAoKtvy6bR372909uwFMYbClTRPCebFgXLjKbk824vjV6w6ToyzvPDiWjGNmP1OnNC6y15KdwlJvXz6bJ1KFVOLLyh5eUTVGmnpVU9ZJVon5WrsooSU41Q5caLIqxwLMRITpsMix+VJLGSSQWAUbRbLQaTcVFCPuOuUJgo5fy1oHdqMikdxLS0maldf4wsxSVNI7Q9B8bgTbHTgT0wYwbCXPhOVLU+dletOuPL13uo3fk0QE5VzXMEAfrnKY2nFiu9F2KRXFdESqVgvn/bs0Z5i9x9wFktQLl4kSm6qCcmtnRxC6OrWn+rOF7dUps8oWDfDYSxqRo4H6bk86O4yomPsx70bbgHRPZwKv5tQlzA1S4uJ0tD4BmBBcdTPp/2ZW7HZjEH2/OXkWL6c1FWZxdrOLsqk7YsPedQ4PG7Cg/I//HDC7f/2HJeQ1M2nrV97docEKyiqSpR6oyYkLdp6dpHxhIHmt+QI0WKxYdEpzOWdV2nXq58Xq+yS2R/vfEj7V2621f/OxUZ/kXwQNRIVZw5aJ9YWk/qFiElavniLML9JGJt9GJwslyQ+kqbEVS/2b9bVDWjsBP9Po4sWu4QkRevaMqrcgxGU5m00IWlwo4NYWIwciwyPx7Do+Itz/jzR44nzil1uPbMlZRrb6v8mr965wsVkC8TE2mLSqBAxaXCR9q/ais1mDLLe+ZgcnywjddWqYm1Z01dSaq0DouKe956voGSuUbWurZR8WvqJb7heCAIRlDYdNJG4rqmDHJ6NEn1SYr9hSy0ui4+3Y4HhNCrU+R8Na722WGWXzHJnv0/7P91sq/+dC9fnFSomdMabuP2OLS0m6ou+YiKbquobfh7x7HcPoMRBElj7nwLB4EF16TZvKfCfO79wIZHnFCYo93TVxKF6Iwfx4HtRjsWmtmtchUVI71q4Wjf8Cxc8AXWy6n/M5L7AbB38VWPrDEuLCZtCaeYpKCwm6sMwfmzdpubLLYuFmOpbVxtc3/mdShXrajO1Xpse3P1lJCjd/6EJCU8D5unAgboLF4hquGZ83d1FEw7+5bxyy8RfF1ig6ds5ntrNsy4RYydtFKKC5wk747H2ALy0rDpGoTP1f6efau2ksxvx6m3JBb+hERiVoVXSPFtLbCn5xH7FcXpBaXyTlm5l1xqSYNOTa1FYQOq1KBAlHjOBC42A81snHWm6h76vuYmcK6EiepqWb5nIwuKzvZIEfsNJoP9Al6Ck5NPQF4onJDI/QlBYmHhxY718Onwk8BaJTEP+njjppEquNS2c1lGshZBoQv7FCnhjhBATYy7wBYGACbTt6KD7u4UmJPJi23eoopvq622hP/Xu+16lpMYO2rgx9LRk/vBLBDExvgsgJsZc4AsCIAAChgQgJoZY7DFmwkVHN5fxDQBfEACB4AhATIx5oWVizAW+IAACIGBIAGJiiAUtE2Ms8AUBEAABYwIQE2MuaJkYc4EvCIAACBgSgJgYYkHLxBgLfEEABEDAmADExJgLWibGXOALAiAAAoYEICaGWNAyMcYCXxAAARAwJgAxMeaClokxF/iCAAiAgCEBiIkhFrRMjLHAFwQiRyA3V/uOu9Er7Au76rFjTuKvLPI7u7J+Kv6rVgq7BsKKJgAxMWaElokxF/iCQMQIyFfYd3k4sFew8AsaH+xe8A4wfnfXjJnBvZk4YoWxYcIQE2OjQ0yMucAXBCJGIFAx4dfFD3ra4X61vXgBJL8EEmISMdsEkjDExJgSxMSYC3xBIGIEAhGT0eMc7tfa60VE7qNlEjHzFJkwxMQYEcTEmAt8XQSmTPmK+g1YRhcu+HbJDH56Jc1991sPVufPX6TpM76mOzq9S//os5R278nxCMcBUWFiMuddha6p73oNvasVIgVE/2smMVm56kd6pPtCan/HXGH7vLyLhmb+4YcTNHDQCtqwMdswPFY8ISbGloKYGHOBr4tAzdqvUKly6UIcvKGUikunFi1nur0XLtpDpcqni/il4kZqv+XSqVbKK+442DEWk9VrVKrZxHNcRC8e3vtmEJMTJ85R3DUZbnuXji+wufdDRqOmr7vj8f1Useo4Onr0bEzeDhATY7NBTIy5wNdFQIoJVwBLl+714KIXk8zVB4SQXF1pDK1Y8b2Id/bsBbrr7vmiEuHWDZxGQN8y4c/9NmwZuIhIUYm2mHALtHLiBGHzMWO/cJuWWylXJowW/rzPjn/5/unS7SNx/Pr0reKYW6+x6CAmxlaDmBhzga+LAIuJeOIsn04sFPruLr2YNG0xQ1QQ69dnebBTVZUSa75MdVKnePjb+UCKCX/fXYpDsL/RFpPhIz4X9n76mVU+ptyy5bAQk+S6r4qwfz6xXMRdtHiPOOZuMBYXbq3EooOYGFsNYmLMBb4uAiwm5SqPpWf+tUpUAO07zHWz0YtJ+SpjqXLieHdYLO/wlN1gK3fTx6+bH1aT3HzLW+J+8JcoP0CUrjBKBPO4GXd/JiSOoxdeXEt1608V544bv8Hf6ab2h5gYmwdiYswFvi4CUkz4MKn2ZFEJLHF1d0kxuXjRIfxj9UnT29i33K6JSfL1Dkq9MfxbMGMj/kQqsWF+wHmrWFdrAXmXM5TjhMTxdFWl0X6TaNtujrgnDh46Rdw6leLDLRLe+L5yOGLzc8IQE2OzQ0yMucDXRUAvJvv2/SaeMGV3lxQTjsoD7hzXCu7uLpqYbPkqMpWd7OZq9jcHJaQWr6srmG6u5KZaecJpG7a1bHkYpdui1UwhGrm5f9Kjjy0S+7e2n0Prv/hJzPJDN5cRtdj2g5jEtv0innu9mPDFnh2SKSoGngaqF5NrkyZS2QTjJ9Xujy6kxs2m07FjsTF7p6TEhLvTeGHigEHBd6tFW0we6PqBuA+45WHkKiWOd4tNleoTqGyC1uUl46akTREPJrHYOkHLRFrR8xdi4skDR14EvMWEg2V3Fz9dyqnB93XWKhfvWVt79/4mKp0qNSZ6pWzew5IUE0nhxEkntekQuKhEW0x4MJ3tX7/xa7II4r644aaZ1KffJyKszW2zRRhPA46/JsMdj3fkuAl3kcaag5gYWwxiYswFvi4CRmLCi8/kehIpJlwp8BMoVzC3tJ1Nkyd/SZ0f/FCbJlouXXRvxArUaIiJZMNda7Jbyt94CftHW0w4v736fizsXa3WJBo5eh2xkLD9xRY3knhqOLuu3T4SfjwVePPmw9Sz12JxzPdWLDqIibHVICbGXODrIsALDnk2l7cbMnS1qBCkmHB4dnYu1W88jcpUGKVVKOXSxbRinsETSy6aYiI5vfmWUuh4ihnEhPPKLdEKVce57c22Z5FgQalQNUOIB3dl3eSa/SXFpnryJMrK+l0WN6Z+ISbG5oKYGHOBb4gEdu48RjxgH4vODGLC3AobTzGLmEj75uSco13/PSYPafv2o6Iri1ux0vFCR16HxHFj2UFMjK0HMTHmAl8bEzCLmEgT5OQ46W9e4ylmExOZVzv8QkyMrQwxMeYCXxsTiLSYHPnFKRZFjsoIbvCZx1MSXavmt34d+LRlOQZjY5OGtegQE2OcEBNjLvC1MYFIi0lJo4WYhJc4xMSYJ8TEmAt8TUbgwoULtHz5curZsyfdcsst9NRTT9GxYwV99OHMLsTEl+aWLVvoySefpDZt2tDQoUPpxImCsRDf2Nb2gZgY2xdiYswFviYj8Pjjj1OpUqXogQceoD59+lBcXBzVqFGDcnNzw55TiIkn0s2bN9Mll1xCrVu3psGDB9O1115LKSkpdPZsbCxC9SxN6EcQE2OGEBNjLvA1EYGTJ09S2bJlKT093Z2rZcuWiQpu1qxZbr9w7UBMPElySzA1NZWcTqcIyMzMFOwXL17sGdEmRxATY0NDTIy5wNdEBH788UcaMWIEHT582J0r9uOn5QkTJrj9wrUDMfEk+d1339GePdrr4zlkwYIFgv3ChQs9I9rkCGJibGiIiTEX+JqcwL/+9S9RoX311VdhzynExBjpgQMHaNiwYZSYmEhNmjRBN5cxJtv6Qkxsa/rYLfi8efPo0ksvpd69e0ekEBATY6xjx46lypUrCxF/9NFHIzJeZXxlc/miZWJsD4iJMRf4mpTAxIkThZB069aNLl68GJFcQkz8Y+Vvk/B4FYt53759/Ue0cAjExNi4EBNjLvA1IQGeksrjJAMGDBAfXIpUFiEmnmTPnTtHvOndbbfdJmZ16f3ssg8xMbY0xMSYC3xNRkCOkXBXS6DO+euv5Ny3L9Do7nh2ExPnL0fJefCQu/z6HV7fU7FiRerevbvbm1snycnJVKdOHbefnXYgJsbWhpgYc4GviQjwgjnuVuHpqdOnT/fYChuAV267g5S46qR++mlQpbGTmDi//lowUqqn+GU0atQouvzyy2nmzJm0fft26tevn2ghjhs3zu85Vg6AmBhb1/Ji4tzuJKWtQqfr/UaHau2gvC5nic4Yw4CvOQnwQjnu3jLa/v3vf/vNtNKwmVZRxicFJSh2ERMhJFWSNUZx1f1yPHPmDN1zzz1u/mXKlKGXXnopol2NfjNjggCIibERLC0mzu+dpNRXSElTyJHmIEdavthXGirkPKYtwDLGAl8rEFA63OkSkxqkBCEodhATt5DE19AYpTYp0uR//PEHZWVlUX5+fpFxrRwBYmJsXUuLidpVExIWE5/tXsWYCHwtQ0ATE1dlyZVmgIJidTHxEZK46qQEICaWuTFCLAjExBigpcVEudFARFytlLz652hpzwxsMcRgRbdh9HOzdpT/6GOk9OxV9JZUz92Fw2MnchteYwalNHf43RJS88Ur4pMa+8apUl8Lq1g3n8SW4vqVx0X9puRTYsPgnuw73Of6NrxMu14+XdfUN2/+yiTzyeE96qwmR/kCFpKJwt1dgTDt2Yt+vaE9ZXYZYtv/nal1u9Poq243rlFt7GttMWnnX0xO1PmZMhLuwhZDDN6Kb0tn42uSgyu+a64reotPcguIu9KMq06zru4nxKKwb6xHOiyYOkeKQTjyNDx+tCETJa5G0TxdzM/HJ9H8+Jtt+78zJq4jTar5YDAmtEVcS4uJOlv17d5Kcwg/9ePAPy5kizvBgoX06OaSLZMnBxO5XlgYapGvb621GObMDbzLtCp/3KpecC2Tymlaa2jTl+G5Z9UJE30FBd1cod4Otj/f0mLC1lXae7dOHKQOCfyf3/Z3SAwD8BGTMAoJY0m+XhOTl9ID/2KiGcSE8+4jKBCTGL7TzZF1y4uJ+MeZrJLSYCsp14wiNTPHHOSRi4gTUNp1KHgCD7OQcOZjWUw4/x6CUist4vbABaxNwBZiwiZUxo4TFYvz+HFrWxSlcxNQaqZqYhIBIdYScnEAABM8SURBVOGLBCsmqkrusZrTZwKfmh7ubi43IC9B0ftjHwSCJQAxCZYY4scMAXXVKlJnvBG2MRLvggcrJnKMhQfSExvkU6CCEkkx4TKpc+eRusCe3ybxtimOi08AYlJ8djjT5gSCEZO/dXBN7+WpxK4tUEGJtJjY3IwofpgIQEzCBBLJ2I9AoGJyb1dfIQlGUCAm9ru3YrHEEJNYtBrybAoCgYhJr37+hSRQQYGYmMLcyEQRBCAmRQBCMAj4I1CUmDwztGghCURQICb+LAB/MxGAmJjJGshLTBEoTExGZQQuJEUJCsQkpm4L22YWYmJb06PgoRLwJybT31Dcg+xSKAL9NRqUh5iEaimcXxIEICYlQRnXsCQBIzFZtLj4QqIXnAsXCpBBTApYYM+8BCAm5rUNcmZyAkZi4n7Dr24KsF4kAt3fvKXgPVwQE5PfCMieIAAxwY0AAsUkYCQmnFTmGpVWrFQMt0r80sa6+YZh8pwd3xYICacHMSmmgXBaiRKwjZhcHJmB16mU6K1l/Yv5E5PCSm6WFz0WlkeEgUBxCNhCTHJznfRC1Wl0oXwSXTyJD8AX50bBOb4E6rXQZmy9MjXwt1AXR0zEOSn59O1OzxaLb47gAwLRI2B5MWEh4RkyFWufo3+22xU90riyJQgMetqhfWGRv3qoHxeRX0Es6leeU1Q8fbg8h3/ZPzWf9h8I/EWRlgCPQpiegKXFxC0kKfl05wOBf3PC9FZDBqNGoOVtwa8f8RAdvTCEsL9+A1opUbsJcGFDApYVEwiJob3hCQIgAAIRIWBJMeE5+vxpVH4iRIskvPfN2bNnacSIEdS+fXu64447aOTIkXT69GnDi3z22WfUu3dvuummm2jw4MH0ww8/eMQbNWqUCOc4RtsHH3xACxcupKlTpxpuDkdBa5Pj9ezZk6ZPn+5xDT5QVVX4Dxw4kLZu3eoTDg8QAIHQCVhSTD78qGDh2OEj6FsO/TbRUtixYweVLVuWLrnkEo/tqquuIg6Tjit5FhsZr3Tp0u79Zs2ayWhUsWJFt7+Mq/9t165doXFyc3MpMzOTSpUqJdK59NJLxW/lypXpgmvV36ZNm+iyyy7zCO/Vq5c7D9gBARAIDwFLigmj6d1f69uulJpPEJTw3CxSIMaOHUssGFxhDx8+XFTUTZo0cV+kR48ebr9Tp04J/yNHjlDr1q2FP4uEt+vTp48I27Bhg0fQ/v37RWuCWxS8TZo0ScSrV6+eiJeSkiLEZNu2baIFIq8tBeO6666jyy+/nA4ePCjym5ycLM7315ryuDgOQAAEAiZgWTFhAn0eh6AEfCcEEDEpKYn46f/ixYsesZs2aUpSTLi1wHHi4+M94sgDWZkfPnxYeolff2Kij8QCVr58eSEeOTk5lJeXR9wK6dq1qzva+fPnhVg0b95ciEunTp3o+eefd4d37txZhK9bt87tF8zO9z84qUdvB704PHrbrLcDn4ocTNkQFwRCIWBpMWEwEJRQbg/Pc/v37y8qYhYKfvLn1oC347EL7qoaMGCAd5A4Hj16tAgfP368R3ggYtKlSxdx7ltvveVxrv5AtpR4DEbvsrOz6dlnnxWtFO6qK66Taz4iMUMrmDS378BsruLaEOdFhoDlxYSxQVDCd/M8+OCDouUhxzauuOIKuvPOO0UrgK8yZMgQUeG//vrrhhfdtWuXCOfBe70rSky4VcJjI/5aPJwWd4Nxl1aZMmWIWyh6x91hMs/PPfecPiio/YYttdbuhEkKRWtb8jFaJkEZDZFLhIAtxIRJQlDCdz9xN9esWbPo9ttvpyuvvFJU0tx9xY7HU7jSfuWVVwwvuHnzZhHevXt3j/CixCQjI0Ocx2Jl5JYsWSIG2llwvMddOH5WVhatXbuWpKhwC6k4rvFNmpgU51ycAwJWJmAbMWEjQlCKfyvzlOBbb72V3njjDY9EeNptWlqaqOi5wuaBdhaTu+++2yOePOBWAYdz5a93RYlJjRo1hFjIWVr6czlPnCa3SLjl4+24VSPdiRMnRFzOc3EcxKQ41HCOHQjYSkzYoBCU4t/W/NTPA976yplTk2MZPPOKXVxcnOgK27dvn8fFeHCeK3weoPdOoygx4XMaN27skR4f8LoSFhKeZnz06FGPcBYOPu/mm292+3MeOb6cDeYOCHAHYhIgKESzHQHbiQlbGIJSvPu8Y8eOoiJOSEgQA+wTJkwQCxe5cmaRkY5bByw8vL6DFxLOmTOHnnrqKSEkHJcXI3q7wsRk9+7d4ro87VfvuLXEYzacJofxBAG58TXZNW3aVIQPGzaM3n//fUpMTBTH/rrh9Okb7UNMjKjADwSIbCkmbPiefbW+b35xHlzgBB566CExyM0VuNxq165Ncj2JTIlXv/MaD7lgkONWrVqVZs+eLaN4/BYmJtOmTRPX8p7FxSvjZR68f2U31t69e8WgvQznlgoLTnEdxKS45HCe1QnYUky4C/26ppqY1G1R0J9udWOHs3zcXbR+/Xr3LK7C0uZBd++1KYXFj0QYv8qFB+a9u9eCvda9jXdR98rvBXsa4oOA5QnYTkxUlaj+jZqQtGgDIbH8HR7GAjqzs+l8XE3xkTV15pthTBlJgUDsE7CdmLCA8OIwFhQWFjgQCIQAC4mSXF8IiRJXHYISCDTEsRWBqIrJli2HaUT657Ry1Y8+0HfuPEZPPrWSzp/3fHWHT8QgPNp21ISEu7h0s0WDSAFR7UigQEhq6MRE21dn+l+Nb0dWKLN9CURNTP7+8AIqVS7dvdWs/QodPlLwKvMxY78QYT/8cCIs1rmnqyYk1Rs5KC8vLElSXt5F6tlrsRBEfYp1UqfQv4f/R++F/RglYCwkWstEiYOgxKhZke0IEIiKmOzekyOEonryJJoy5Su6pe1scRx3TQadOvWnKGY4xaT7PzQh4fcqnT4TnlfSs5DEX5Mh8t38Rs+FfFcmjBb+VWpMpKNHz0bAbEiyRAjk5upaIlJAjH/VBQtLJEu4CAiYlUBUxMRIKGbP2aFVwNUniCd+ozjFgThwsCYkldPyKScnPELC+Zg8+UuR3/Yd5or86vPGQtO120cinIUSLjYJOA9lFYhJQk1SeIt3dXXJYzl+Mtn49TGxWXLkGgSCJxAVMVmydK+oaHfs+NUjxxMmbBT+detPpVFj1ov9ULq5+DXh4k2sqfmUnR0+IeFMN7thBl1VaYxH/r0PuOVydRFxvM/BsbkJKE8MIu7eggMBEPAkEBUx4SyUqTCKqlSfQJMmfemRIx5057GUsgmjQhKT8S+7vrZYL5/2fR/+aVsVq44jFr3C3K3t51Dp+JGFRUFYjBGAmMSYwZDdEiMQNTHhlgePLZSuMMqnsL37fSKEhEWlOC2Tz9apWoskJZ8i9d2HFq1mCkH0ybzOI7Hmy5RUe7LOB7uxTgBiEusWRP4jRSBqYiILtHTpXrnr8bt582G6rf07lJNzzsM/kIOffnK6xYS7uiLh/m/kOiF4jz62yDD5oc+tEeE8aw3OOgQgJtaxJUoSXgJRFZNIrjPZ9V+VKtbLF6ISCUFxOFSq33iaEIyqSRPpga4f0PMvrKF773+feJozt6p4vGTfvt/CazGkFlUCEJOo4sfFTUwgamJSEutMIi0o/C2PNrfNFuMi+jUzpeLS6frmM+j06QsmNj2yVhwCEJPiUMM5diAQFTEpyXUmkRYUeZPs3fsbTZ32FfHKfTjrEoCYWNe2KFloBKIiJkZrSCK1zoTxlJSghGYKnB0LBCAmsWAl5DEaBKIiJiW1zkQPNNyC8tGC3TR8xOdFbm/N+kafDeybhAC/Pr9z584BbatXr3bnGmLiRoEdEPAgEBUx4RxEep2JRyldB+EUFH7/lsc4ie49Y3r/hMRxRlmBX5QJ8Ncg+euQ/NEs/ohXq1at/G7679VDTKJsOFzetASiJiaRXGdSGO1wCcqu/x6jzNUHfDZ+AzIPvktB6f/4ssKyg7AoEvj555+pWrVq1KZNm4A+8sVZzWl/P+WXrx7FXOPSIGBOAlETE4mjsHUmvDAwO/t3GTVsv3pB+ftj4VuHwmtjKiWOF0LCLZJNm7LDlmckFBkCy5cvF62TBQsCWw+0/uEXaEmZRpHJDFIFgRgmEFUxWbR4D/Giv/Vf/OSBkKfc9ur7MZUqX7wV8B6J+Tn4v1Gu93alhP4NeM5v9x6L3K0RnvbMfnCxQWDx4sXiE8SB5PbTJ16lkaVvCyQq4oCArQhETUzatpvjrny5S6hVa+0zqNx9lOB6uuf3WhVnBXxRFnx7juu9XSn59N4HSlHRCw3f+vURquzKL7+va8NGtEYKBRbjgRCTGDcgsh8xAlERk4OHTgkhqVJjAr0xcxs1baGNMfDMp1JxI0VYo6bT6dix8H8LRC8kK1aGJiQ9ei52C2K3hz5CayRit6l5EoaYmMcWyIm5CERFTObN/05UwnPe2SFo8KtJ5IA1t0amvfZVRCiFU0i4JSXznFhrEvH4jtHW/VF8NCkixoxSohCTKIHHZU1PICpiIl+SyCIiHX8bhFslkVpBHk4h4Tzz90x4TKeorVqtSbKI+LUAAYiJBYyIIkSEQFTFRF+i8lXGUqOmr+u9wrYfbiEJW8aQUMwRgJjEnMmQ4RIiYCoxueGmmWEvNoQk7EhtnSDExNbmR+ELIRBVMeFV5HLj7iJeFS+P5W8os7kgJIVYHkHFIgAxKRY2nGQDAlERk8mTvxSvbefB9qK2rKziLVqEkNjg7o1CESEmUYCOS8YEgaiISaTJbNxY8NneUKf/RjqvSD+2CEBMYsteyG3JEbCkmPzwY8Fnez/8KLS1JCVnClwpFghATGLBSshjNAhYUkwYZOaagtbJ+g0FU5CjARnXtA4BiIl1bImShJeAZcWEMbnHTerl077vISjhvXXsmRrExJ52R6mLJmBpMeHip4/WXuhYKTWfcnKcRRNBDBAohADEpBA4CLI1AcuLCVu39wAHJdfMpucSZ9ja2Ch86AQgJqEzRArWJGALMWHTvdsog5S46pR/7IQ1LYlSlQgBiEmJYMZFYpCAbcREGTtOiInz+PEYNBOybBYCEBOzWAL5MBsBiInZLIL8mJqAFcVEXb2G1MmvFGyvTiF11tvk/PFHT1s4HKR+9jmpL08i9eNPiBx+vlJ6/jypr7xKzoOHPM/HkaUJQEwsbV4ULtwErCgmSpduotWuxCeR2OJqaMdx1UkZ9pJA6PzmG1ISU0jhsCrJWviNrYn+/NMHsdJvgAhXP1nmEwYP6xKAmFjXtihZBAhYVkxqphbQUlVyZmWRcmNrIQrOn38mpetDpNSuT87DR4hUldTXXtcEY8rUgvOIRIuFxyZ5g5h4oLH8AcTE8iZGAcNJwBZi4gKmznxLE4UFC0i5vSOpkyYXoDxzRoQpA590+/F4pFItRcSFmLix2GYHYmIbU6Og4SBgJzFRHnpYCIZz2zYfdOr89zShecP12Qink5Q77yGlYTNybt+hhaGby4eblT0gJla2LsoWdgKWFZNKtUj550Bte+RRUpLqaS2Pm9uIbi09SOfuPaRcW5uU+k2J/vpLBKmvTyelQhI5d3xLzr37ICZ6YDbZh5jYxNAoZngIWFZMeJyjYTNtu/4GrZUxcjTRuXMe4NQNGzUhSWlIzoMHRZhz3z5SWIzGZGjHEBMPZnY5gJjYxdIoZ1gIWFZM9APwfkipy1eQklCTlEbNyfnLUXcs5YlBWiumQTNSmrQgJaWhdly7PilPDnbHw461CUBMrG1flC7MBOwqJkJIKiSRcuvtRLm5HlTVTz8lZejzBVuvPpqYPNCV1DnveMTFgXUJQEysa1uULAIEbCkmPHNLjqGMG0/q1GkF2+frfChjzMQHiS08ICa2MDMKGRIBB5HaXSGlkUKOtHy6kJpHyn0K0ZmQUjXNyWLRYnJ9v/lRM1drLQ3X+hG5jkT89uztcx7ExAeJLTwgJrYwMwoZCgHlRoWUtILNkebQjhsqRGdDSRnngoB1CEBMrGNLlCQCBJybVA8h0YsK76s98FnoCGBHkjFIwDZicnbwc6KpvrDt4zSvwxBsYBDQPfCfBm/6FRNuofyRejygdHDP4X9Ofw981HUEnTt2KgYlw3+WbSMmOW9/SAeq1KfXUrvTtNQe2MAgoHtgfvLzfsWEWybZKd8FlA7uOfzP6e+BN1s+TrnZ1vochm3ExL+eIgQECifAA+/e3Vvy2PkTPgVdOD2E2oUAxMQulkY5i03Aud1JSgMvQamvkPqRWuw0cSIIWI0AxMRqFkV5IkPgApE6TCGls0LqIIXIc91eZK6JVEEghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghghATGLIWMgqCIAACJiVAMTErJZBvkAABEAghgj8P0dFqkVHYGWWAAAAAElFTkSuQmCC[/img]
Your 'image' shows as a huge blob of text here. It looks to me like P24 switching Q8 (or having R23 as 0R for that matter) only makes sense if you leave U12 unpopulated. Contingency planning for parts shortage, or different models from different population of the same board perhaps? Or I'm just missing something! I haven't checked to see which parts are actually populated on the PineTime - R22 and Q8 are shown as NC.
Sorry for the Blob, I wanted to show the Q8 Mosfet.
Aaaaah make sense yes. I looked in mine, there is a 6-pin pad that is empty under the LCD connector. Could this one be the U12 not populated then ?