Differences
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iothings:proiecte:2021:retroweatherstation [2022/01/27 22:09] florin.dragulin |
iothings:proiecte:2021:retroweatherstation [2022/01/27 22:10] (current) florin.dragulin |
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| {{:iothings:proiecte:2021:samsung_sve_11ms21.png?400| Samsung SVE 11MS21}} | {{:iothings:proiecte:2021:samsung_sve_11ms21.png?400| Samsung SVE 11MS21}} | ||
| - | Due to limited amount on the ESP32 bord, to drive those 20 pins I used a special IC which can handle higher voltages, Microchip HV5812, a serial 20-bit shift register with VDD = 4.5-5.5V for logic circuits and VPP = 20 – 80V for high voltage. | + | Due to limited amount on the ESP32 board, to drive those 20 pins I used a special IC which can handle higher voltages, Microchip HV5812, a serial 20-bit shift register with VDD = 4.5-5.5V for logic circuits and VPP = 20 – 80V for high voltage. |
| Data-In, CLK and Strobe will be driven by ESP32. To obtain 30-32V from my 9V DC power I used a switch mode power supply (SMPS) with MT3608 IC to have a higher efficiency. | Data-In, CLK and Strobe will be driven by ESP32. To obtain 30-32V from my 9V DC power I used a switch mode power supply (SMPS) with MT3608 IC to have a higher efficiency. | ||
