<\/p>\n\n\n\n
TOTO D\u00cdLO PODL\u00c9HA LICENCI: CC BY-NC-ND 4.0<\/strong> Attribution-NonCommercial-NoDerivatives 4.0 International<\/p>\n\n\n\n <\/p>\n\n\n\n Soubor LICENSE.txt je p\u0159ilo\u017een do archivu ZIP<\/p>\n\n\n\n <\/p>\n\n\n\n https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/<\/a><\/p>\n\n\n\n <\/p>\n\n\n\n JVmeteo<\/strong> COREON — verze HW 1.1<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n V\u00ddROBN\u00cd SOUBORY JVmeteo HW 1.1 DPS KE STA\u017dEN\u00cd ZDE<\/strong><\/p>\n\n\n\n V\u00ddROBN\u00cd SOUBORY JVmeteo HW 1.1JOHN DPS KE STA\u017dEN\u00cd ZDE<\/strong><\/p>\n\n\n\n SOUBORY STL 3D MODEL\u016e KRABICE A RADIA\u010cN\u00cdHO \u0160T\u00cdTU SENZORU KE STA\u017dEN\u00cd ZDE<\/p>\n\n\n\n Ve\u0161ker\u00e9 3D modely pro 3D TISK nakreslil a navrhnul — — — pro meteostanici JVmeteo<\/p>\n\n\n\n <\/p>\n\n\n\n P\u0158EDPOKL\u00c1DAN\u00c9 DOKON\u010cEN\u00cd CEL\u00c9HO ZA\u0158\u00cdZEN\u00cd: JARO 2026<\/p>\n\n\n\n Ikdy\u017e po drobn\u00fdch \u00faprav\u00e1ch je verze HW 1.0 funk\u010dn\u00ed, rozhodl jsem se vydat je\u0161t\u011b jednu posledn\u00ed verzi HW 1.1, kter\u00e9 opravuje chyby p\u0159edchoz\u00ed verze a z\u00e1sadn\u011b vylep\u0161uje cel\u00e9 za\u0159\u00edzen\u00ed a tak\u00e9 je c\u00edlem, aby zde zve\u0159ejn\u011bn\u00e9 projekty ke sta\u017een\u00ed byly pln\u011b funk\u010dn\u00ed a ka\u017ed\u00fd, kdo si st\u00e1hne pot\u0159ebn\u00e9 v\u00fdrobn\u00ed soubory m\u016f\u017ee snadno vyrobit funk\u010dn\u00ed kus. Plo\u0161n\u00e9 spoje dokon\u010d\u00edm a\u017e bude pln\u011b otestovan\u00e1 verze HW 1.0 z d\u016fvodu maxim\u00e1ln\u00ed eliminace mo\u017en\u00fdch chyb.<\/p>\n\n\n\n K dispozici ke sta\u017een\u00ed zde budou 2 varianty tvaru plo\u0161n\u00e9ho spoje JVmeteo a to varianta<\/p>\n\n\n\n <\/p>\n\n\n\n 2. JVmeteo COREON HW 1.1JOHN (DPS 5x5cm) <\/p>\n\n\n\n <\/p>\n\n\n\n Aktu\u00e1ln\u011b se jedn\u00e1 pouze o orienta\u010dn\u00ed rozlo\u017een\u00ed sou\u010d\u00e1stek a po dokon\u010den\u00ed m\u016f\u017ee b\u00fdt v\u00fdsledej jin\u00fd.<\/p>\n\n\n\n Elektricky se jedn\u00e1 o stejn\u00e9 zapojen\u00ed s pou\u017eit\u00edm stejn\u00fdch hodnot sou\u010d\u00e1stek a velikost\u00ed pouzder.<\/p>\n\n\n\n <\/p>\n\n\n\n ZDE JE VYSV\u011aTLEN\u00cd V\u00ddZNAMU SLOVA: COREON<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n Sv\u011bteln\u00e9 3mm diody jsou ur\u010deny pouze v p\u0159\u00edpad\u011b pou\u017eit\u00ed extern\u00ed indikace nap\u0159. v instalovan\u00e9 krabici. Pro b\u011b\u017enou indikaci jsou pou\u017eit\u00e9 SMD LED. Nov\u011b p\u0159ibila indikace nap\u00e1jen\u00ed ESP tj. \u010d\u00e1sti, kter\u00e1 m\u00e1 na starosti vy\u010d\u00edt\u00e1n\u00ed a odes\u00edl\u00e1n\u00ed dat ze senzoru, p\u0159ipojen\u00ed k WiFi aj.<\/p>\n\n\n\n <\/p>\n\n\n\n Krom\u011b teploty, tlaku a vlhkosti pomoc\u00ed p\u0159ipojen\u00e9ho senzoru BME280 je mo\u017en\u00e9 p\u0159ipojit t\u00e9m\u011b\u0159 ve\u0161ker\u00e9 dostupn\u00e9 senzory na trhu pro kter\u00e9 je dosta\u010duj\u00edc\u00ed nap\u00e1jec\u00ed nap\u011bt\u00ed 3,3V. ESP32 C3 02U m\u00e1 k dispozici 2 piny pro I2C komunikaci a pro ostatn\u00ed senzory je nutn\u00e9 p\u0159ipojen\u00ed na jin\u00e9 piny av\u0161ak opraven\u00e1 verze JVmeteo COREON HW 1.1 nebude m\u00edt k dispozici vyveden\u00e9 ve\u0161ker\u00e9 nevyu\u017eit\u00e9 piny z d\u016fvodu mal\u00e9ho prostoru, ale za p\u0159edpokladu, \u017ee bude dostatek \u010dasu vytvo\u0159\u00edm i variantu s hranat\u00fdm plo\u0161n\u00fdm spojem (HW 1.1JOHN) na kter\u00fd se budou tyto piny vej\u00edt a n\u00e1sledn\u011b zde budou zve\u0159ejn\u011bny v\u00fdrobn\u00ed soubory ke sta\u017een\u00ed.<\/p>\n\n\n\n Zvolen\u00e1 varianta ESP podporuje ji\u017e v z\u00e1kladu komunikaci s USB bez nutnosti UART p\u0159evodn\u00edku av\u0161ak nejedn\u00e1 se o plnohodnotnou USB podporu kterou p\u0159in\u00e1\u0161\u00ed nap\u0159\u00edklad pou\u017eit\u00fd CP2102, ale zapojen\u00ed jsem upravil tak, \u017ee je volba u\u017eivatele zda se rozhodne tento p\u0159evodn\u00edk CP2102 osazovat v\u010d. dopl\u0148uj\u00edc\u00edch sou\u010d\u00e1stek, nebo zda osad\u00ed jen v\u0161e pot\u0159ebn\u00e9 pro z\u00e1kladn\u00ed komunikaci pro nahr\u00e1n\u00ed FW do ESP pomoc\u00ed USB.<\/p>\n\n\n\n Do budoucna m\u00e1m v pl\u00e1nu vyu\u017e\u00edt JVmeteo i se senzorem schopn\u00fdm detekovat zem\u011bt\u0159esen\u00ed i velmi slab\u00e9 ot\u0159esy ikdy\u017e se nejdn\u00e1 p\u0159\u00edmo o GEOFON tj. senzor vylo\u017een\u011b ur\u010den\u00fd k detekci zem\u011bt\u0159esen\u00ed a ot\u0159es\u016f, tak jako men\u0161\u00ed detektor na zahradu pro testov\u00e1n\u00ed bude i levn\u00fd senzor pln\u011b dosta\u010duj\u00edc\u00ed.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n MAPA \u010cR S V\u00ddSKYTEM Z\u011aM\u011aT\u0158ESEN\u00cd ZA N\u011aKOLIK LET ZP\u011aTN\u011a. Zdroj: GEOFYZIK\u00c1LN\u00cd \u00daSTAV \u010cR<\/p>\n\n\n\n <\/p>\n\n\n\n Brzy dal\u0161\u00ed info….<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n JVmeteo<\/strong> HW 1.0 ( nahrazeno verz\u00ed HW 1.1 )<\/p>\n\n\n\n Nov\u00e9 v\u00fdrobn\u00ed soubory, nov\u011b jsou 3 otvory pro mont\u00e1\u017e a upraven\u00e1 velikost n\u011bkolika prokov\u016f, kter\u00e9 m\u011bly \u0161patn\u00fd rozm\u011br.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n V\u00ddROBN\u00cd SOUBORY DPS BUDOU ZDE KE STA\u017dEN\u00cd<\/p>\n\n\n\n METEOSTANICE JE AKTU\u00c1LN\u011a VE V\u00ddVOJI<\/p>\n\n\n\n K meteostanici lze pou\u017e\u00edvat s Li-Ion 3,7V mo\u017enost 2Ks paraleln\u011b s kapacitou 1600mAh na 1 kus, nebo 1 baterii s kapacitou 3200mAh.<\/strong><\/p>\n\n\n\n Druh\u00e1 mo\u017enost je pou\u017eit\u00ed LiPol 3,7V baterie.<\/strong><\/p>\n\n\n\n Pro zaj\u00edmavost uvedu podle \u010deho zjistit pot\u0159ebnou kapacitu baterie, \u0159ekn\u011bme, \u017ee by ESP odeb\u00edralo 100mA a baterie bude m\u00edt 1Ah (1000mAh), tak bude ESP fungovat 10 hodin v provozu. Je pot\u0159eba vz\u00edt v \u00favahu i r\u016fzn\u00e9 podm\u00ednky, jako je teplo, mr\u00e1z apod. Teoreticky by m\u011bla b\u00fdt ide\u00e1ln\u00ed baterie 2500mAh.<\/p>\n\n\n\n J\u00e1 objednal s kapacitou 3000mAh, v\u011bt\u0161\u00ed kapacitu nedoporu\u010duji a to z d\u016fvodu aby se b\u011bhem dne zvl\u00e1dla nab\u00edt s pou\u017eit\u00fdm sol\u00e1rn\u00edm panelem. OBJEDNAN\u00dd AKUMUL\u00c1TOR ZDE<\/a><\/strong><\/p>\n\n\n\n JVmeteo je navr\u017eeno s vyu\u017eit\u00edm modern\u00edch \u010dip\u016f tak, \u017ee disponuje ochranou proti p\u0159ep\u011bt\u00ed do akumul\u00e1toru a sou\u010dasn\u011b umo\u017en\u016fje \u010d\u00e1st energie vyrobenou sol\u00e1rn\u00edm panel pou\u0161t\u011bt do z\u00e1t\u011b\u017ee tj. ESP a elektronika v\u010d. senzoru BME280 d\u00edky tomu je-li akumul\u00e1tor pln\u011b nabit\u00fd d\u0159\u00edv\u011b tak funguje udr\u017eovac\u00ed nap\u011bt\u00ed a zbytek energie je pln\u011b vyu\u017eit\u00fd. Dr\u00e1tov\u00fd termistor 10K m\u016f\u017ee a nemus\u00ed b\u00fdt osazen\u00fd, lze ho p\u0159ilepit na baterii a p\u0159ip\u00e1jet pomoc\u00ed del\u0161\u00edch vodi\u010d\u016f jeho \u00fa\u010del je pouze jako tepeln\u00e1 ochrana proti p\u0159eh\u0159\u00e1t\u00ed baterie.<\/p>\n\n\n\n Zvolen\u00e9 ESP32 C3 WROOM 02U je n\u00edzkoenergetick\u00fd jednoj\u00e1drov\u00fd \u010dip s konektorem pro extern\u00ed ant\u00e9nu. Pro testov\u00e1n\u00ed m\u00e1m objednan\u00e9 2 ant\u00e9ny jedna se ziskem 5dB ZDE <\/strong><\/a><\/p>\n\n\n\n A druhou ant\u00e9nu 3dB ZDE<\/a><\/strong><\/p>\n\n\n\n Samo\u0159ejm\u011b, \u017ee ka\u017ed\u00fd m\u016f\u017ee vyu\u017e\u00edt sv\u016fj vlastn\u00ed k\u00f3d pro ESP a potom lze p\u0159ipojit i jin\u00e9 senzory, nebo za\u0159\u00edzen\u00ed, kter\u00e9 si sami zvol\u00edte. Limit pro p\u0159ipojen\u00ed senzor\u016f a jin\u00fdch za\u0159\u00edzen\u00ed k JVmeteo je omezen pouze mno\u0161tv\u00edm pin\u016f. Pin IO4 a IO19 jsem pou\u017eil pro p\u0159\u00edpadn\u00e9 indika\u010dn\u00ed LED, lze je vyu\u017e\u00edt i na jin\u00e9 za\u0159\u00edzen\u00ed za p\u0159edpokladu, \u017ee led nebudou osazeny.<\/p>\n\n\n\n Zapojen\u00ed umo\u017e\u0148uje volbu nab\u00edjec\u00edho proudu pomoc\u00ed rezistoru R9 tj. 2K nastav\u00ed proud na 0,5A a rezistor 1K umo\u017en\u00ed nab\u00edjec\u00ed proud 1A.<\/p>\n\n\n\n Nab\u00edjen\u00ed akumul\u00e1toru je mo\u017en\u00e9 i pomoc\u00ed 5V stejnosm\u011brn\u00e9ho adapt\u00e9ru klidn\u011b i pomoc\u00ed USB nab\u00edje\u010dky nap\u0159\u00edklad za p\u0159edpokladu, \u017ee nebude dostatek sv\u011btla aby se akumul\u00e1tor nabil pomoc\u00ed sol\u00e1rn\u00edho panelu. Pro vyu\u017eit\u00ed mo\u017enosti nab\u00edjen\u00ed pomoc\u00ed 5V adapt\u00e9ru, nen\u00ed nutn\u00e9 odpojovat sol\u00e1rn\u00ed panel a v\u0161e m\u016f\u017ee b\u00fdt v provozu sou\u010dasn\u011b. <\/p>\n\n\n\n Zapojen\u00ed je nastaveno, aby ze sol\u00e1rn\u00edho panelu vzalo v\u017edy maximum dod\u00e1van\u00e9ho proudu i za slab\u00e9ho osv\u011btlen\u00ed a sol\u00e1rn\u00ed panel je vyu\u017eit\u00fd na maximum do nastaven\u00ed hodnoty rezistorem R9 a sou\u010dasn\u011b prob\u00edh\u00e1 inteligentn\u00ed p\u0159enost energie do z\u00e1t\u011b\u017ee ( ESP32 ) a d\u00edky tomu je-li akumul\u00e1tor pln\u011b nab\u00edt\u00fd, tak nedoch\u00e1z\u00ed ke st\u00e1l\u00e9mu vyb\u00edjen\u00ed a nab\u00edjen\u00ed, ale energie vyroben\u00e1 sol\u00e1rn\u00edm panelem je pln\u011b vyu\u017eit\u00e1.<\/p>\n\n\n\n Indika\u010dn\u00ed sv\u011bteln\u00e1 dioda s ozna\u010den\u00edm PWR signalizuje, \u017ee je nap\u00e1jen\u00ed v po\u0159\u00e1dku a za p\u0159edpokladu, \u017ee nesv\u00edt\u00ed, tak nefunguje zdroj nap\u00e1jen\u00ed, nebo je p\u0159\u00edli\u0161 slab\u00fd.<\/p>\n\n\n\n Druh\u00e1 sv\u011bteln\u00e1 dioda s ozna\u010den\u00edm CHRG signalizuje stav nab\u00edjen\u00ed, za p\u0159edpokladu, \u017ee dioda sv\u00edt\u00ed, tak se nab\u00edj\u00ed akumul\u00e1tor a po nabit\u00ed je zhasnut\u00e1. Za p\u0159edpokladu, \u017ee je odpojen\u00fd sol\u00e1rn\u00ed panel a nen\u00ed p\u0159ipojeno, \u017e\u00e1dn\u00e9 5V DC extern\u00ed nap\u00e1jen\u00ed a baterie klesne pod pevn\u011b nastaven\u00e9 nap\u011bt\u00ed 3,1V, tak se dioda rozsv\u00edt\u00ed.<\/p>\n\n\n\n T\u0159et\u00ed sv\u011bteln\u00e1 dioda s ozna\u010den\u00edm BATT 100% signalizuje pln\u011b nabit\u00fd akumul\u00e1tor.<\/p>\n\n\n\n Proto\u017ee se p\u0159i osazov\u00e1n\u00ed sou\u010d\u00e1stek uk\u00e1zalo, \u017ee v zapojen\u00ed je drobn\u00e1 chyba, kter\u00e1 nem\u00e1 vliv na funkci a danou sou\u010d\u00e1stku nen\u00ed nutn\u00e9 osazovat, ale sou\u010dasn\u011b m\u011b napadlo p\u0159idat pro indika\u010dn\u00ed diody mo\u017enost extern\u00edho p\u0159ipojen\u00ed nap\u0159. LED 3mm pro snadn\u011bj\u0161\u00ed kontrolu p\u0159\u00edmo na krabici um\u00edst\u011bn\u00e9 venku a d\u00e1le upravit mal\u00e9 drobnosti, tak meteostanici JVmeteo b\u011bhem roku vylep\u0161\u00edm na HW 1.1 a soubory budou zde ke sta\u017een\u00ed av\u0161ak plo\u0161n\u00e9 spoje nem\u00e1m v pl\u00e1nu si nechat vyrobit.<\/p>\n\n\n\n <\/p>\n\n\n\n PRVN\u00cd TESTOV\u00c1N\u00cd A INSTALACE FW<\/strong><\/p>\n\n\n\n <\/p>\n\n\n\n Uveden\u00ed do provozu nebylo snadn\u00e9. Zprovozn\u011bn\u00ed datov\u00e9 komunikace zabralo asi 7 hodin, ne\u017e se vyzkou\u0161\u00ed r\u016fzn\u00e9 mo\u017enosti a nakonec se zd\u00e1, \u017ee to je \u010d\u00e1ste\u010dn\u011b funk\u010dn\u00ed, ale vlastn\u011b to nefunguje, d\u00e1le probl\u00e9my s USB na po\u010d\u00edta\u010di, tak to v\u0161e zabere n\u011bjak\u00fd \u010das a dal\u0161\u00edch hodinu, nebo 2 uveden\u00ed komunikace se senzorem a vys\u00edl\u00e1n\u00ed nam\u011b\u0159en\u00fdch hodnot, ale to v\u0161e je pot\u0159eba m\u00edt funk\u010dn\u00ed na plo\u0161n\u00e9m spoji, nikoliv na dr\u00e1tech, d\u00e1le jsem musel p\u0159ep\u00e1jen QFN \u010dip, ale v\u0161e dopadlo dob\u0159e a prvn\u00ed testov\u00e1n\u00ed bylo \u00fasp\u011b\u0161n\u00e9 ikdy\u017e nebylo zcela \u0159\u00e1dn\u011b dokon\u010deno kv\u016fli de\u0161tiv\u00e9mu po\u010das\u00ed a slab\u00e9ho venkovn\u00edho osv\u011btlen\u00ed, ale i tak d\u00e1val sol\u00e1rn\u00e1 panel 5,9V.<\/p>\n\n\n\n P\u0159ed v\u00fdrobou plo\u0161n\u00fdch spoj\u016f HW 1.1 prob\u011bhne samoz\u0159ejm\u011b \u0159\u00e1dn\u00e9 testov\u00e1n\u00ed aktu\u00e1ln\u011b vyroben\u00e9<\/p>\n\n\n\n verze HW 1.0.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n Zde je vid\u011bt v mobiln\u00ed aplikaci na Android zobrazen\u00ed grafu teploty, vlhkosti a tlaku. Obr\u00e1zek v levo p\u0159edstavuje vlastn\u00ed nastaven\u00ed pro widget teploty a interval 30s je samoz\u0159ejm\u011b \u0161patn\u011b, proto\u017ee data odes\u00edl\u00e1m ka\u017ed\u00fdch 90s. <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n Zde je n\u011bkolik obr\u00e1zk\u016f z nam\u011b\u0159en\u00fdch hodnot b\u011bhem testov\u00e1n\u00ed.<\/p>\n\n\n\n <\/p>\n\n\n\n Na uk\u00e1zku vkl\u00e1d\u00e1m zdrojov\u00fd k\u00f3d pro ESP32, kter\u00fd pro zjednuse\u0161n\u00ed vyu\u017e\u00edv\u00e1 ji\u017e hotov\u00e9 knihovny v ARDUINO IDE a nahr\u00e1n\u00ed FIRMWARE je hotov\u00e9 do jedn\u00e9 minuty.<\/p>\n\n\n\n <\/p>\n\n\n\n INSTALACE FW<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n ODKAZ NA JEDNOTLIV\u00c9 SOU\u010c\u00c1STKY:<\/p>\n\n\n\n SOL\u00c1RN\u00cd PANEL 6<\/a>V <\/a> <\/strong>Panel mus\u00ed m\u00edt 6V, proto\u017ee p\u0159i pou\u017eit\u00ed 5V panelu nemus\u00ed za\u0159\u00edzen\u00ed fungovat.<\/p>\n\n\n\n ESP32-C3-WROOM-02U-N<\/strong><\/a>4<\/strong><\/a> N4 znamen\u00e1 4Mb FLASH PAM\u011a\u0164, kterou d\u016frazn\u011b doporu\u010duji, proto\u017ee v n\u00e1vrhu nen\u00ed pou\u017eit\u00e1 extern\u00ed pam\u011b\u0165. Sou\u010dasn\u011b je jedn\u00e1 o energeticky \u00fasporn\u00e9 ESP32.<\/p>\n\n\n\n BME280<\/strong><\/a> Je senzor teploty, tlaku a vlhkosti.<\/p>\n\n\n\n SP\u00cdNA\u010c IP65<\/strong><\/a> Tla\u010d\u00edtko pro reset meteostanice.<\/p>\n\n\n\n\n
<\/ol>\n\n\n\n
![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/cor3dokjv-1024x692.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/corjvokpcb-1024x777.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/cor3djv2ok-1024x697.png\")
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/hw1v1johndps-1024x997.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/1v1john3dzad-1024x895.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/hw1v1john3d-1024x847.png\")
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/ai6-473x1024.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/ai5-473x1024.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/ai4-473x1024.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/ai3-473x1024.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/ai-2-473x1024.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/ai-1-473x1024.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/seismograf3djvmet.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/HCgap0LWkAA5p6I-150x150.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/HCgap0zXAAA4ATY-150x150.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/01\/jvmeteo3dok2fin-1024x782.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/01\/jvmeteook2fin-1024x709.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/01\/jvmeteok2fin3-1024x754.png\")
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/xp7-1024x584.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/xp5-1024x555.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/xp4.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/xp3.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/xp2-805x1024.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/xp1-838x1024.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/HCPaSpra4AAyClJ-1024x632.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/xp6.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/03\/HCQlyJHbEAMHwkI-511x1024.jpg\"){kind=spacer}
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/meteotest-1v0-i-1024x864.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/meteo-1v0-fw-inst-1024x794.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/jvmeteo-1v0-fw-inst-2-1024x782.jpg\")
<\/a><\/figure>\n<\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/online-5-1024x868.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/meteo-online-3.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/meteo-online-2-881x1024.png\"){kind=spacer}
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/meteo-1v0-test-682x1024.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/Screenshot_20260222_172238_ThingView-Free-512x1024.jpg\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/Screenshot_20260222_172303_ThingView-Free-511x1024.jpg\"){kind=spacer}
<\/a><\/figure>\n<\/figure>\n\n\n\n\n#include <BTAddress.h>\n#include <BTAdvertisedDevice.h>\n#include <BTScan.h>\n#include <BluetoothSerial.h>\n\n#include <WiFi.h>\n#include \"ThingSpeak.h\"\n#include <Adafruit_BME280.h>\n#include <Adafruit_Sensor.h>\n\nconst char* ssid = \"zde vypl\u0148 n\u00e1zev s\u00edt\u011b\"; \/\/ n\u00e1zev s\u00edt\u011b SSID \nconst char* password = \"zde vypl\u0148 heslo s\u00edt\u011b\"; \/\/ heslo s\u00edt\u011b\n\nWiFiClient client;\n\nunsigned long myChannelNumber = zde vypl\u0148 \u010d\u00edslo tv\u00e9ho kan\u00e1lu;\nconst char * myWriteAPIKey = \"zde vypl\u0148 API pro z\u00e1pis\";\n\n\/\/ \u010das \u010dten\u00ed dat\nunsigned long lastTime = 0;\nunsigned long timerDelay = 90000;\n\n\/\/ Uchov\u00e1n\u00ed \u00fadaj\u016f o teplot\u011b\nfloat temperatureC;\nfloat humidity;\nfloat pressure;\n\/\/odkomentuj pro teplotu v Fahrenheit\n\/\/ voliteln\u00e1 teplota - float temperatureF;\n\n\/\/ senzor a p\u0159ipojen\u00ed pin\u016f\nAdafruit_BME280 bme; \/\/BME280 connect to ESP32 I2C (GPIO 21 = SDA, GPIO 22 = SCL)\n\nvoid initBME(){\n if (!bme.begin(0x76)) {\n Serial.println(\"Could not find a valid BME280 sensor, check wiring!\");\n while (1);\n }\n}\n\nvoid setup() {\n Serial.begin(115200); \/\/Inicializace seriov\u00e9 linky\n initBME();\n \n WiFi.mode(WIFI_STA); \n \n ThingSpeak.begin(client); \/\/ Inicializace ThingSpeak\n}\n\nvoid loop() {\n if ((millis() - lastTime) > timerDelay) {\n \n \/\/ P\u0159ipojen\u00ed a obnoven\u00ed WiFi\n if(WiFi.status() != WL_CONNECTED){\n Serial.print(\"Attempting to connect\");\n while(WiFi.status() != WL_CONNECTED){\n WiFi.begin(ssid, password); \n delay(5000); \n } \n Serial.println(\"\\nConnected.\");\n }\n\n \/\/ na\u010dti nov\u00e9 hodnoty\n temperatureC = bme.readTemperature();\n Serial.print(\"Temperature (\u00baC): \");\n Serial.println(temperatureC);\n humidity = bme.readHumidity();\n Serial.print(\"Humidity (%): \");\n Serial.println(humidity);\n pressure = bme.readPressure() \/ 100.0F;\n Serial.print(\"Pressure (hPa): \");\n Serial.println(pressure);\n \n \/\/odkomentuj pro teplotu v Fahrenheit\n \/*temperatureF = 1.8 * bme.readTemperature() + 32;\n Serial.print(\"Temperature (\u00baF): \");\n Serial.println(temperatureF);*\/\n\n \/\/ nastaven\u00ed hodnot\n ThingSpeak.setField(1, temperatureC);\n \/\/ThingSpeak.setField(1, temperatureF);\n ThingSpeak.setField(2, humidity);\n ThingSpeak.setField(3, pressure);\n \n \/\/ Z\u00e1pis do ThingSpeak. Max. 8 pol\u00ed tj. 8 r\u016fzn\u00fdch hodnot\n \/\/ Informace do kan\u00e1lu zapisujeme do pole 1.\n int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);\n\n if(x == 200){\n Serial.println(\"Channel update successful.\");\n }\n else{\n Serial.println(\"Problem updating channel. HTTP error code \" + String(x));\n }\n lastTime = millis();\n }\n}\n<\/code><\/pre>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-02-21-125934.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/Snimek-obrazovky-2026-02-21-125811.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/bfbfdfb.png\")
<\/a><\/figure>\n\n\n\n![\"\"](\"https:\/\/jvelektronika.cz\/wp-content\/uploads\/2026\/02\/espdetfw-1024x527.png\")
<\/a><\/figure>\n<\/figure>\n\n\n\n