스쿠버포럼에 올렸던 내용입니다.
재호흡기 다이빙에 관한 이야기입니다.
재호흡기가 무엇인가, 종류, 왜 사용하는가? 재호흡기의 위험성 이런 내용을 이야기 해 보았습니다.
Short sound test Tymphany TC9FD18 full range 3inch unit in DIY mini TABAQ style enclosure. All sound recorded with Zoom H1. Build vlog coming soon.
Simple & small 4 inch full range speaker enclosure DIY
DIY Two-Way Bookshelf Speakers using old Wharfedale driver.
This is update version of my DIY nitrox analyzer based on Arduino compatible board.
It’s using small oled display and powered by 9v battery. Display o2 percentage of gas, sensor mv output, two MOD(maximum operating depth) in meter. 1 push button for lock screen, calibration, po2 change.
OLED 128×64 I2c display module
I put everything include sensor in a small plastic box(65×95×55mm) with transparent cover. Here’s some image of ugly looking inside. I’m sure someone can 3d print smaller and prettier shell.
9v battery is very poor choice for Arduino project (I used because that’s what I have many). AA, AAA x 3 or small rechargeable batteries are better.
Warning! Be cautious when you use 9v battery. Arduino onboard DC regulator will be destroyed if you accidentally switch positive & negative.
Please don’t email me about basic arduino programming issue. You can search or post question here. https://forum.arduino.cc