Esp32u wajib pake antenna ya gan, klo ga pake antenna ga dappet sinyal Buat agan2 yang suka buat PCB sendiri atau mau produksi massal, wajib banget nih pake ini, jd ga perlu mahal2 beli ESP32 board, cukup ini aja Ada 2 varian, ada yang penyok dan mulus, tapi sudah kita test semua downloadernya bisa beli di sini
https://www.tokopedia.com/mechatron/esp32-downloader-programmer-burner-adapter-development-board ESP32 is a complete,small form factor(SFF)802.11 b/g/n/e/i(2.4GHz)WLAN plus BT4.2combo solution optimized for low-power,mobile consumer electronics,wearable andInternet of Things(IOT) devices.ESP32 integrates all WLAN and BT functionalityin a single package to support a low cost,layout-friendly implementation whileallowing flexibility for platform specific customization. ESP32 is a highly integrated solution withless than 10 external components. ESp32 integrates the transmit /receive RFfunctionality including the antenna swiches,RF balun,power amplifier,low noisereceive amplifier,filters,power management,and advanced calibratiom ciacuitriesthat allow the solution to dynamically adjust itself to adapt to externalcircuit implefections. The entire solution reduces Printed CircuitBoard (PCB) area,time-to-market,and bill-of-material(BOM)costs while addingcapablities and processing power.the mass production of ESP32 does not requireexpensive and specialized Wi-Fi test equipment. ESP32 #39;s uitra low power consumption radioarchiteature and proprietary power save technologies extend batter life inreal-world applications,using the following features: Fine granularity clock-gating Multiple low-power modes,and Dynamic voltage scaling