Hart Kallen
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hartkallen.bsky.social
Hart Kallen
@hartkallen.bsky.social
Retired gent living on the Allegheny Plateau (SWPA).

Chatting with friends, keeping track of events, documenting my hobbies.
#ufo_project
Well, this is interesting. I fixed the AI-generated tone program and produced a tone. After a few minutes, I started smelling a familar scent - hot electronics! Not quite sure what was getting hot, but I'm thinking it may have been the speaker.
November 9, 2025 at 8:59 PM
#ufo_project
I have the lights working in the demo light program. The program from MS Co-Pilot didn’t turn on the external_power nor load the digitalio module. I figured out what the problem was and fixed the code.
November 9, 2025 at 3:23 AM
More parts for projects. On the left, 3.7V LIPO batteries, 150mAh and 105mAh. Adafruit.com On the right, hollow hexagonal box with spacer. Measured 4 inches vertex-to-vertex, 3-1/2 inches side-to-side, 1-1/8 inches tall with middle third spacer installed. For hiding electronics. Newtype.us
November 7, 2025 at 5:18 PM
#project_ufo
Some parts came in. I plan on cutting a hole in the iris on the bottom of the UFO model, and adding a speaker grill. On the inside, I plan on placing a speaker to emit an ambient UFO hum.
November 6, 2025 at 2:55 PM
#project_ufo
I've ordered a 40mm speaker for the UFO. It has to have a better bass response than what I was using.

I've also ordered a 100mAh and a 150mAh battery for the ACS mecha carrier.

Work on building models has been suspended until mid-month, as other projects have priority.
November 2, 2025 at 1:28 AM
#project_ufo
The MS Co-Pilot generated chase program wasn't perfect. There is a single NeoPixel mounted on the board called board.NEOPIXEL. There is also terminal strip on the board for connecting NeoPIxels. That connection is called board.EXTERNAL_NEOPIXELS.

Co-Pilot incorrectly used the former.
October 28, 2025 at 2:20 AM
#project_ufo
With the hardware progressing, it's time I doubled down on understanding CircuitPython. I want to light a NeoPixel ring with an Adafruit RP2040 PropMaker Feather, and I want to create the subtle sound of an alien spacecraft idling.

1/
October 26, 2025 at 3:32 PM
#project_ufo
We sat down and brain stormed some of the design. We decided to add a mid layer to support effects hardware. An Adafruit RP 2040 Propmaker Feather, a LiPo battery, a speaker will mount to the bottom of the plate. A Neopixel ring will mount to the top and illuminate the windows and dome.
October 25, 2025 at 11:29 PM
#project_ufo
I have ideas. I'm just not sure which way to go.

The very top of the saucer has a 1-15/16 inch opening for a green dome to peek through and six "clerestory" green windows around the sides.

Green lighting seems almost mandatory, but I want more than a simple glow.

1/
October 24, 2025 at 4:45 PM
The Area-51 UFO A.E.-341.15B model has arrived. Twenty-one pieces total. Lots of space inside for effects.
October 23, 2025 at 10:58 PM
Life being what it is, model-making has been postponed until next week. That being said, I have ordered an AMAIM: Warrior at The Borderline - Armored Special Carrier (ASC) model, and a Area-51 UFO A.E.-341.15B model.

The Defiant and the V-33 Stork need to wait until the paint booth is available.
October 16, 2025 at 4:22 AM
With everything taking longer than expected, I decided to snap together at V-33 Stork VTOL from the Japanese anime "Warrior at the Borderline". No paint. No glue. No stickers.

I may glue it together and paint it later.

This would be my first completed model.
October 9, 2025 at 2:55 AM
#defiant
The algorithm is watching. My browser sent me over to eBay, to see a lighting kit for a 1:1000 scale Defiant. The price was $39.95.

The pictures were taken in the dark with over-exposed shots showing the Main Deflector, Bussard Collectors, and Warp Grills.
October 5, 2025 at 4:11 AM
#defiant
A new shipment of 1.8/2mm round top LEDs came in from Lighthouse LEDs. These will be the Pulse Phaser Emitters, and they'll be mounted externally.

I also received a new TLC59711 PWM LED Driver from Adafruit. This will work all the various lighting channels.
October 4, 2025 at 11:03 PM
#defiant
Meanwhile, lighting this model will be difficult.

1 - 4. Pulse Phasers
5 - 6. Bussards P/S
7 - 8. Aft Warp Grills P/S
9 - 10. Engineering Vents P/S
11 - 12. Impulse Engines P/S
13. Main Deflector

There is no space for even the tiniest of LEDs to light the Pulse Phasers.

1/
October 3, 2025 at 2:47 AM
#defiant
I picked up a lenticular screen to help diffuse the light, and some self-adhesive holographic film in six different patterns to add a bit of sparkle to whatever light source is behind it.
October 3, 2025 at 2:40 AM
#jester_class
I have a lot of work to do.
September 26, 2025 at 10:19 PM
#jester_class
It works! It was a loose speaker wire!
September 26, 2025 at 6:12 PM
#jester_class
I have added pins to the Adafruit RP2040 Propmaker Feather and plugged it into a solderless breadboard. I connected a 3W, 4ohm speaker to Pins 1 and 2 of the Terminal Block and loaded the Ruiz Brother's HAL9000 program.

Drat! I need the .wav files in the /sounds/ directory!

1/
September 26, 2025 at 5:54 PM
Sealing batteries into the #defiant would not be a good idea. What if we added a hole to the underside of the model and pressed a magnetic USB-C plug tip into it. That tip would socket into a USB-C Breakout. We have connectors for voltage and data.
September 26, 2025 at 3:15 PM
#defiant
Started work on the 1:1000 Defiant model. Painting insides with flat black primer for light blocking. Added hole on ventral side for magnetic USB-C port to deliver power and maybe data.
September 26, 2025 at 2:03 AM
Path Forward:
I need to solder pins onto an @adafruit.com Feather RP2040 Propmaker #microcontroller and a TLS59711 PWM LED Driver so I can learn the #CircuitPython to light LEDs. After that, I need to tackle adding the sound.

My efforts seem to be taking the long way around.
September 25, 2025 at 5:21 PM
I am recovering from cataract surgery, so my projects are on-hold for a bit.

We did paint a black light-blocking primer coat to the inside of the #defiant in preparation for a white reflective coat, and we added a magnetic USB-C tip to the bottom of the hull to bring power in for lighting.
September 24, 2025 at 3:18 PM
#circuitpython #adafruit
I am following the examples set by Kattni Rembor's "CircuitPython Made Easy on Circuit Playground Express and Bluefruit" on learn.adafruit.com.

it is a simple way to deal with CircuitPython, by only using one module from the Circuit Playground Library.

1/
Adafruit Learning System
learn.adafruit.com
September 12, 2025 at 2:34 PM
I am trying to learn both #python and #circuitphython.

With Python I am learning syntax.
With CircuitPython I am learning structure.

I am struggling to understand the nomenclature, all though I have tickled both microprocessor.cpu.voltage and microprocessor.cpu.temperature.
September 11, 2025 at 3:17 PM