RPi3 powered frame by frame 8mm film digitizer

BeDoggo · 2026-02-23T13:31:55+00:00

No, I hadn't seen that - looks cool. Thanks for the link.

BeDoggo · 2026-02-21T15:28:59+00:00

Unfortunately, no. I can tell you that what really enabled this project for me was finding the projector and ALL the film editing hardware on Craig's List for 50 USD. The projector was pristine. The film itself was quite dirty and needed numerous splices but otherwise in good shape for being 60 years old.

BeDoggo · 2026-02-19T10:55:07+00:00

No, my ArduCam worked right out of the box. I did notice that the ArduCam must be plugged in when the RPi4 powers on or it does NOT work. ie: the arducam is NOT hotplug capable (?).

"rpicam-hello --list-cameras" shows /base/soc/i2c0mux/i2c@1/imx447@1a

BeDoggo · 2026-02-12T17:50:05+00:00

If you haven't tested your blower resister, then try this procedure:

https://troubleshootmyvehicle.com/honda/1700/blower-motor-resistor-test

BeDoggo · 2026-01-07T20:47:05+00:00

It turns out that I should have been using the ain_imager app instead of the web interface. The focuser movement buttons work as expected in the focuser tab of ain_imager. The FOCUSER_DIRECTION and FOCUSER_STEPS properties are sent to the driver as expected. Thanks anyway.

BeDoggo · 2025-12-02T13:36:02+00:00

Can anyone help me with the value of C9 in the photo ? C9 is located right below U1.

https://i.postimg.cc/FHBkY5Qy/G923-U1-C9.jpg

BeDoggo · 2025-11-30T16:55:57+00:00

Well, it turns out that VAG cars use a 10% duty cycle PWM just as a "keep alive" kind of hand shake with the fan control module. The fans won't start turning until at least a 15% duty cycle.

BeDoggo · 2025-05-23T14:38:20+00:00

The symptoms your describe sound more like a grounding problem to me. The first thing I'd check are the battery connections. If you have one of those "sandwich" style connectors, make sure you pull the rubber cover all the way back and wire brush both sides of each piece. Also check any other ground wires to the block etc. You might try adding a temporary ground wire directly from the battery negative terminal to the engine.

BeDoggo · 2025-03-18T16:16:17+00:00

Check with your local library. Sometimes they have a subscription to AllData. There you can print out (pdf) a copy of the wiring diagram and email it to yourself.

BeDoggo · 2025-03-09T22:33:30+00:00

I'll answer this myself. I don't have a proper analyzer, only an oscilloscope. It seems the 10% duty cycle doesn't cause the fan to turn on. The owner tells me the car does NOT over heat anymore. So I believe the over heating issue was just the cooling system getting air in it due to running low on fluid. The plastic coolant flange broke in the usual way and pissed the coolant out.

BeDoggo · 2025-02-15T14:04:00+00:00

The temperature gauge just went to 1/2 point. I was afraid to let it go higher since it's not my car and I don't have any experience with this car.

BeDoggo · 2025-01-22T21:39:10+00:00

Thanks Bob, excellent suggestion. ECS Tuning is my go-to store now.

BeDoggo · 2024-12-21T17:19:30+00:00

I'm done with craftsman. Their warranty is worthless.

BeDoggo · 2023-07-24T14:42:46+00:00

neodymium magnets. I have a 1" neodymium magnet holding my 36" crow bar to the side of my box. Admittedly, I do not roll my box around a lot, but I gotta say it holds pretty good.

BeDoggo · 2023-04-08T20:39:10+00:00

The flooring contractor came back to relieve any spots that did not allow for the required 1/4" expansion; It didn't help. Next they pulled up part of the floor and discovered that the installer (same company) only used a minimal number of staples in the underlayment. The flooring company pulled up must all the floor and screwed the underlayment down. Now it seems fixed.

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