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Whitecat ESP32 LORA GATEWAY
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Jan 26.2018, 08:49:23
The Whitecat ESP32 LORA GATEWAY is a mother board designed for the well-know IC880A LoRa WAN concentrator. The board is based on the ESP32 PICO D4 and integrates and USB to UART bridge, Ethernet, an Power Over Ethernet. Inside the ESP32 PICO D4 runs the Lua RTOS operating system and the Semtech Packet Forwarder software.
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Level-shifterThe USB to RS232 outputs only 3,3V on TX signal. But the board provides both 5V and 3.3V output for driving external Electronics. The hardware I will use this level-shifter om has also the RX signal inverted. Thats the reasson for only Three Inverter gates. I would likely used four of them on a normal USB to RS232 with level-shift, or maybe an 74HC04 SO. But I allready had these gates and the cheep Silabs USB to RS232 laying in my drawer. Next time I'll redesign and fit all in one PCB. The requirement is a small design. It will be used between a Raspberry Pi 3 and an home appliances in our labratory at my work. BTW... Thank you PCBGOGO for the high quality and Quick delivery of the PCB-boards. You also gave me a few extra boards :) and immersion gold for free.4235 0 Jan 20.2018, 19:25:01
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