User:Rando

Hardware

Raspberry Pi 3 B v1.2

Raspberry Pi Display v1.1

Cannon Powershot A2200

CHDK

http://chdk.wikia.com/wiki/CHDK_1.4.0_User_Manual

Download using STICK: http://zenoshrdlu.com/stick/stick.html

Remote Pameters, enable remote

Error creating thumbnail: Unable to save thumbnail to destination

Remote Usage: http://chdk.wikia.com/wiki/USB_Remote

Note: the USB remote functionality is not used for this, we need to control it from the [pi <-> mac] mini device

Scripting

http://chdk.wikia.com/wiki/CHDK_Scripting_Cross_Reference_Page

click

is_key

is_pressed

press

release

shoot

wait_click

wheel_left

wheel_right

Transferring files

How to transfer to computer? Perhaps the rpi can indicate to the macmini to mount the camera and tx the picture.

http://chdk.wikia.com/wiki/PTP_Extension/ptpcam_Examples

ptpcam / libptp

Install instructions

http://chdk.wikia.com/wiki/Ptpcam_in_headless_linux_Dockstar

ok, THIS is the one we want, it has the "ptpcam --chdk" option:

https://github.com/jrabbit/libptp-chdk

notes on usage: http://chdk.wikia.com/wiki/PTP_Extension/ptpcam_Examples

How to run one onn camera:

loadfile('A/CHDK/SCRIPTS/testprgm.lua')()

ordi_controller.py

Handles from ptpcam functions from the mac mini as python calls using subprocess.run.

scripting

http://chdk.wikia.com/wiki/Lua

The "Minimalistic Intervalometer" is a lua script that takes a photo, using half presses and full presses.

Steps:

1. Write script
2. Place <script>.lua in CHDK/SCRIPTS on SD card e.g. A/CHDK/SCRIPTS/testprgm.lua
3. Run script with loadfile('A/CHDK/SCRIPTS/testprgm.lua')()

Script Reference

http://chdk.wikia.com/wiki/CHDK_Scripting_Cross_Reference_Page

How to script and run and stuff

http://chdk.wikia.com/wiki/Lua/PTP_Scripting

> luar shoot()

Lua dev environment metioned here: http://chdk.wikia.com/wiki/Lua_Development_Environment

this is how!

Error creating thumbnail: Unable to save thumbnail to destination

ptpcam --dev=028 --chdk="luar shoot()"

Camera Disassembly

Why? the power doesn't stay on without a button press. so trying to replace the button so we can drive it via a GPIO on the rasp pi.

Wait, why.

Because. We're hacking.

https://www.ifixit.com/Device/Canon_PowerShot_A2200

Power button modification

In order to control the camera power "remotely", the power button was modified to pull out wires and connect them to a GPIO of the pi. This was the power can be turned on when the system boots.

The button was a SMD tact switch with barely exposed pads. In order to get sufficient copper to solder, the solder mask was gently scraped off.

Error creating thumbnail: Unable to save thumbnail to destination

File:Ordi power button mod.png

Power

The pi needs 5V @ 2.5A. That, plus the LCD display max current draw is 400mA, so really need a 3A+ supply.

Pi Image

I'm not sure if I HAVE to create a custom image, but it seems like I should make an attempt in order to load Kivy.

https://www.instructables.com/id/Creating-a-Custom-Shrinked-Raspberry-Pi-Image/

Not really into what that instructables is doing but will keep up.

Next plan: emulate with qemu to get a custom image going

https://stackoverflow.com/questions/38837606/how-to-emulate-raspberry-pi-raspbian-with-qemu

totally custom i think, but like, don't have to.

https://github.com/RPi-Distro/pi-gen

Ok, so to get -M raspi3 natively, qemu currently has to be compiled from scratch. gfd.

https://github.com/qemu/qemu

But it should now include this patch:

https://github.com/bztsrc/qemu-raspi3

Ok, well, this image just wont boot. I'll have to configure the pi by hand which fucking suuuucckkksssssssss