inputs.text: unreliable logging - two units used year review based holux m241 firmware v113 need data logger trackdistance measurer want geotagging digital photos take advice avoid unit multiple failures resulting data loss lead start looking something else want something display coordinates connect computer works well probably find units geared towards purposes gps data logger horribly unreliable advice already unit simply take photos longlat screen sure record dont expect logging feature work every time pros satellite signal good doesnt usually lose signal car backpack battery life good not enough whole day powered usb get usb phone charger 2xaa extend logging time 24 hours use usb car charger not worry batteries youre car third party accessories dont come unit bluetooth connectivity need even download data via bluetooth start logging automatically soon receives signal set note not available original firmware also note like device general unreliable set \\dist point\\ distance measure mode used simple navigating eg finding car although not reliably see bottom review details cons critical fault sometimes simply fails record coordinates even though little \\running man\\ logging icon shown went camping 4 days despite always keeping thing powered day supposedly logging end result exactly 0 records recorded ive using thing well year since trip rarely seems keep logging didnt get wet damaged way no indication whether working not unless keep eye free space screen time realize not actually anything late no lock theres no way \\lock\\ device keep bag pocket accidentally switch press button could stop recording lose distance waypoint change settings etc buttons fairly difficult press accidentally still not something want rely no accuracy display never sure accurate coordinates sometimes needs \\jump started\\ power via usb turn inserted battery might start working required times m241 devices tried multiple batteries werent issue distance measure lost switch press right button \\enter\\ forget changing batteries want use feature careful not knock although rubber buttons fairly difficult press accidentally firmware software not reliable data format stored internally device changed firmware versions increased accuracy good well good use mismatched softwarefirmware download coordinates end corrupted data think successfully downloaded bad wiped device downloading data download corrupt theres nothing happened used newer software download coordinate data device older firmware note couldnt update firmware without losing data either would catch22 even known advance corrupting data lost severaldays worth logs really wouldnt difficult holuxs pc software check firmware version deal cases instead chose software show success silently fail really lazy stupid programming even issue unlikely affect second time increases distrust unit wont buying anything \\holux\\ stamped buggy firmware certain settings change unrelated settings reproduce bug set device log time 15 seconds go settings menu choose \\log rcd\\ \\full stop\\ default setting probably selected already no particular reason changed back logging time 15 seconds logging distance every 100m note also due twobutton menu system enter \\log rcd\\ menu eg see set cant escape without choosing option even reselecting already selected option end changing unrelated \\log by\\ setting makes undependable device never sure settings checking changes others im not sure isolated bug others like annoying ui \\menu\\ button also backlight button turn backlight current menuscreen first cycle menusscreens mere annoyance could solved issue making first press turn backlight next presses cycle menu rather combine two distance measure \\ruler\\ mode doesnt tell direction reference waypoint device could almost useful simple navigation eg finding car see bottom review details anyway gps not even good xkcd407 navigating although pinch youcan use frequent firmware upgrades required fix bugs eg original firmware gave northern hemisphere coordinates southern hemisphere thank holux fixing bugs still software windows windows software not user friendly eg forgets last folder downloaded another issue upgrade firmware hit \\disconnect device\\ button first really isnt intuitive likely upgrade firmware case youre wondering summary says dont rely dont expect pleasant user experience navigate device youre carbikehomecampsite go \\ruler\\ mode press \\start\\ always know far away distance going youre getting closer means however really unreliable cant sure fluctuating distance random genuine theres no accuracy display smallest unit 10 meters 001 km also hawkishly watch display device switched even momentarily \\enter\\ button accidentally pressed location car forgotten youre not enjoy navigating device saved past note must \\dist point\\ settings no way tell thats mode youre using without going settings changing fortunately seems swap two modes point path without resetting either measurement never desperate enough try using triangulation calculate direction waypoint although theory could triangulation exercise reader