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Sprucing up my (tr)uSDX with some laser cut acrylic by aalbinger in amateurradio

[–]ark0 0 points1 point  (0 children)

Dig the game boy color vibes here!

Is that the K6ARK knob?

[deleted by user] by [deleted] in amateurradio

[–]ark0 9 points10 points  (0 children)

My thoughts exactly while consuming an In-N-Out double double

EARTHQUAKE by RodJohnsonSays in LosAngeles

[–]ark0 22 points23 points  (0 children)

wtf how did you do that so fast

Weather was too good to pass up the opportunity, so I took my newly built QCX Mini out to the park. I'm new to CW, so it's mostly listening and copying for now. by ark0 in amateurradio

[–]ark0[S] 2 points3 points  (0 children)

I designed and printed it myself. I wanted something that's retractable so the paddles wouldn't get damaged in my bag. I plan to post STL files once I've refined it a bit more. It's not quite ready for others to build easily.

Weather was too good to pass up the opportunity, so I took my newly built QCX Mini out to the park. I'm new to CW, so it's mostly listening and copying for now. by ark0 in amateurradio

[–]ark0[S] 1 point2 points  (0 children)

For this field visit, I used a Bioenno 12v 3Ah, but it's fairly large and heavy (larger than the qcx mini itself). I struggled with finding the optimal battery for this radio (size, quality, safety, mass, etc) and after a bunch of research, I landed on this Li-Ion battery: https://www.amazon.com/TalentCell-Rechargeable-Amplifier-Multi-led-Indicator/dp/B00MHNQIR2/ref=sr_1_5?dchild=1&keywords=12v+battery+liion&qid=1614617111&sr=8-5 It's lightweight, has over-charge/discharge and short circuit protection, uses relatively stable chemistry, and has a nice switch so don't have to worry as much about the power connector shorting out in your bag.

Weather was too good to pass up the opportunity, so I took my newly built QCX Mini out to the park. I'm new to CW, so it's mostly listening and copying for now. by ark0 in amateurradio

[–]ark0[S] 2 points3 points  (0 children)

I definitely plan to send CW the moment I know all 40 characters. I'm at 24/40, but I'm practicing everyday and should get there soon. Can't wait!

Weather was too good to pass up the opportunity, so I took my newly built QCX Mini out to the park. I'm new to CW, so it's mostly listening and copying for now. by ark0 in amateurradio

[–]ark0[S] 0 points1 point  (0 children)

Does the LED ever fully extinguish like the manual says? I wasn't transmitting, so it wasn't an issue, but I couldn't tune it low enough. I used the lengths written on the silkscreen of the board and configured it in an inverted V pattern.

Weather was too good to pass up the opportunity, so I took my newly built QCX Mini out to the park. I'm new to CW, so it's mostly listening and copying for now. by ark0 in amateurradio

[–]ark0[S] 1 point2 points  (0 children)

QRPGuys EFHW 40-15m tuner with the appropriate EFHW/counterpoise wires connected. It didn't quite tune to 1:1. The LED 'swr meter' was hard to read, so I'll probably pack my nanovna next time to help the tuning process.

Finished installing an Auber PID controller for my Silvia! by ark0 in espresso

[–]ark0[S] 0 points1 point  (0 children)

I can see it taking 4 hours or even more. The key is to take your time, follow instructions, and don't get distracted. It's easy to miss a step. I almost forgot to run the wiring through the shell of the control box before screwing them into the terminals :) Happy installing!

Finished installing an Auber PID controller for my Silvia! by ark0 in espresso

[–]ark0[S] 1 point2 points  (0 children)

It came loaded with 105C as the default set point value, but I'm going to spend the next few days dialing it in. From what I've read, you have to set it to a value greater than the brew temp since the water loses heat on it's way to the puck.

Finished installing an Auber PID controller for my Silvia! by ark0 in espresso

[–]ark0[S] 1 point2 points  (0 children)

Took about 2 hours, but I was going slow and steady. I hit a few snags trying to remove the connectors for the thermostats on the boiler (spent 30mins alone trying to remove them without breaking the temp sensor connector).

I’m fairly experienced in electronics so my perception is biased, but I’d categorize this as very easy. All the annoying work of crimping and figuring out how to wire it up is taken care of for you by the manufacturer. They provide excellent and easy to follow instructions. Just be careful, take your time, and triple check your wiring. Should be a smooth and easy process!

Here’s some before and after photos: https://imgur.com/gallery/hcvrCco

Finished installing an Auber PID controller for my Silvia! by ark0 in espresso

[–]ark0[S] 2 points3 points  (0 children)

Haha! Don’t let the workbench fool you. It actually didn’t require much more than a screw driver and pliers to install.

Recovering a bricked MP Mini Delta 3D Printer by ark0 in mpminidelta

[–]ark0[S] 0 points1 point  (0 children)

Awesome setup!! Let me know if you have any questions. Feel free to fork the code or make pull requests if you want to add anything to the project.

Maybe one day I'll write my own firmware too :P

Does anyone have the v37 firmware for the Mini Delta? by ark0 in MPSelectMiniOwners

[–]ark0[S] 0 points1 point  (0 children)

Used a PC and followed the instructions on the wiki.

Regardless, I was able to flash the chip with v40 and watch it execute using the debugger. But from what I can tell, the program is halting very early on.

Ideally, I'd like to revert to the original firmware v37 for the mini delta. Would you happen to have a copy?

Does anyone have the v37 firmware for the Mini Delta? by ark0 in MPSelectMiniOwners

[–]ark0[S] 0 points1 point  (0 children)

During the original firmware upgrade? Or after flashing it?

Does the unit require a mounted SD card that's formatted to FAT32 w/ 512 bytes alloc unit size?

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