esp32_nat_router
https://github.com/martin-ger/esp32_nat_router ESP32 NAT Router with WPA2 Enterprise support This is a firmware to use the ESP32 as WiFi NAT router. It can be used as Simple range extender for an…
Prototype I2C Display Board with EEPROM
https://www.barbouri.com/2018/03/31/prototype-i2c-display-board-with-eeprom/
Battery Capacity Tester
https://www.barbouri.com/2019/08/17/battery-capacity-tester/
Millivolt Meter Version 2
https://www.barbouri.com/2019/08/07/millivolt-meter-version-2/
4–20mA Current Receiver
https://www.barbouri.com/2020/11/07/4-20ma-current-receiver/#more-1939 Building a 4–20mA current transmitter and receiver for some upcoming automation projects. After building the 4–20mA current transmitter, it was time to build a receiver. I used the…
Programmable Voltage Reference Project
https://www.barbouri.com/2022/03/29/updating-the-programmable-voltage-reference-project/ After five years and a few prototype revisions of the Version 2.12 Programmable Voltage reference, I decided it was time to update the project based on many requests and lessons…
RS232 isolation #3
https://www.barbouri.com/2022/03/31/isolated-ttl-serial-to-usb-2-0-converter/
RS232 isolation #2
https://www.eevblog.com/forum/projects/rs232ttl-to-usb-isolator/ http://lemmini.de/RS232%20TTL%20Isolator/RS232%20TTL%20Isolator.html ADUM1201ARZ (Aliexpress, Eleparts, Devicemart) 절연전압: 2.5kV 상승/하강 시간(통상): 10ns, 10ns 채널 수: 2 동작온도: -40°C ~ 105°C 실장 유형: 표면실장(SMD,SMT) 패키지/케이스: 8-SOIC 전압-공급: 2.7V ~ 5.5V 데이터…
RS232 isolation
GTL-POWER-B0505S (Eleparts, Aliexpress) 전류-출력(최대): 200mA 출력 수: 1 기능: DC-DC 전압-출력: 5V 전압-입력: 4.5V ~ 5.5V 출력구성: DC-DC Isolated Module