Problem replacing external crystal oscillator.

-

hi all,

i working on project involves uart communication @ 460800 baudrate. this, 16mhz clock frequency wasn't apt. replace external oscillator 14.7456mhz crystal oscillator.

but can't arduino (mega2560) board communicate pc.

what should make pc recognize arduino new crystal?

thanks!

recompile bootloader correct clock frequency , upload using programmer .


Arduino Forum > Using Arduino > Installation & Troubleshooting > Problem replacing external crystal oscillator.


arduino

Comments

Post a Comment

Popular posts from this blog

ffmpeg h264_omx encoder - libomxcore.so missing. - Raspberry Pi Forums

-
linux raspberrypi 4.9.56-v7+ #1044 smp fri oct 13 15:23:13 bst 2017 armv7l gnu/linux fmpeg version 3.2.5-1 when try use h264_omx encoder [h264_omx @ 0x4eb940] libomx_core.so not found [h264_omx @ 0x4eb940] libomxcore.so not found tried apt-file find 2 files don't seem part of package?! where/how should find them? in advance! after research learned omx layer in raspbian handled libomxil-bellagio library. fact ffmpeg apparently expecting different library suggest there's wrong raspbian ffmpeg package? anyway, recompiled ffmpeg myself , got h264_omx encoder work. raspberrypi
Read more

'setTime' was not declared in this scope

-
hi, after updating arduino 1.6.10 when compiling same code obtain error code: [select] settime' not declared in scope how can fix it? quote how can fix it? don't call functions aren't defined. post code (all of it) , exact error message(s). Arduino Forum > Using Arduino > Programming Questions > 'setTime' was not declared in this scope arduino
Read more

php - Class PDO not found in laravel 5.2 -

-
i have db helper , code in way: <?php namespace app\business; use db; class dbhelper{ private function dbconnectioninfo() { //$results = db::select('select username user_master'); //return "fetchuserlocation success". json_encode($results) ; $pdo_db = db::connection()->getpdo() ; $pdo_db->setattribute(pdo::attr_errmode, pdo::errmode_exception); return $pdo_db; } function executeresultset($dbquery) { $pdo_object = dbhelper :: dbconnectioninfo(); $stmt = $pdo_object->prepare($dbquery); $stmt->execute(); $results = $stmt->fetchall(pdo::fetch_assoc); return $results; } function dbconnection() { return dbhelper :: dbconnectioninfo(); } } ?> when call return "fetchuserlocation success". json_encode($results) ; executed means db connection works when call function error : class 'app\business\pdo...
Read more