KiTSUNE HIKARI Basic 🦊

Basic light meter for film camera

Manu

• Feature
• Microcontroller support
• Requirement
• Schematic
• How to use

Feature

• Aperture priority mode only.
• Type of measurement.
  • reflected-light mode
  • incident-light mode

  default incident-light mode.

• Auto shutdown
  • 1-5 min.

  default 1min.

• Auto sleep
  • 15-45 sec.

  default 25sec.

Microcontroller support

• Arduino Uno R3
• Arduino Pro mini
• Arduino Nano
• Arduino Leonardo / micro / pro micro
• Other Atmega328p microcontroller with Arduino bootloader

Requirement

Hardware

• Microcontroller
• BH1750FVI (Light sensor)
• SSD1306 OLED display 128x32

Software

• Arduino IDE

Library

• Adafruit_GFX
• Adafruit_SSD1306
• BH1750FVI ( by PeterEmbedded )

Schematic

How to use

press or hold [ F1 ] button in main screen for change aperture

Min 0.95
Max 22

press or hold [ F2 ] button in main screen for change ISO

Min 12
Max 6400

Setting page

in setting have 4 page

• Type of measurement
• Auto sleep time
• Auto shutdown time
• Rrset to default

press [ F1 ] for next page and [ F2 ] for previous page
if want to exit setting press [ setting ] button for save and exit

measurement page

press [ measure ] button for switch mode between reflected-light mode and incident-light mode

Sleep time page

press [ measure ] button for increase time

min 15 sce.
max 45 sec.
If value is exceeded press hold button and value will circle again.

Shutdown time page

press [ measure ] button for increase time

min 1 min.
max 5 min.
If value is exceeded press hold button and value circle again.

Reset page

press [ measure ] button for reset to default
after press confirm in first page to confirm to reset press [ measure ]
if want to cancle press [ F1 ]

if want to castom value by yousalf go to line 580-587
default is

TYPE_measure      = 0;
AepSelect         = 10;
APERTURE          = 2.8;
isoSelect         = 9;
ISO               = 100;
SLEEP_TIME        = 25000;   //25 sce.
SHUTDOWN_TIME     = 60000;   //1 min.

TYPE_measure

• 0 : incident mode
• 1 : reflected mode

AepSelect APERTURE isoSelect ISO
you can see at line 263-396

SLEEP_TIME and SHUTDOWN_TIME
measured in milliseconds.