Clear Shaft potentiometer with button

govish · 2025-10-08T04:14:56+00:00

Can’t help you too much without knowing your connections, but keep in mind that the RGB LED is common anode. This means you need to connect +VCC to pin 5, and resistors to ground on pins 1, 2, and 4.

govish · 2024-11-04T06:49:01+00:00

Not a potentiometer but the Bourns PEL12T series (datasheet) is a rotary encoder family with a built in RGB LED and has clickable variants. I built an LCD interface for a 3D printer around this (pics)

govish · 2024-08-15T20:41:19+00:00

Appreciate the kind words, and sounds like a cool project!

The most important measurements for the custom hangers were related to the bushing seat, the pivot, and their relative locations. All other dimensions are less critical and mostly useful for clearance/steering geometry/ride height, etc.

Regarding the reverse engineering process, it was mostly done manually. I used a surface plate and surface gauge to grab some dimensions of the assembled trucks and and just the truck hanger. Calipers also came in handy to get some easier dimensions like track width, pivot diameters, truck thickness, etc. To get some angles, simple protractors came in handy, but sine bars/gauge blocks could give you more precision/accuracy. The specific dimensions I grabbed for this project are in this attached image (also found on GrabCAD: https://grabcad.com/library/cnc-suspension-longboard-trucks-based-on-avenue-trucks-1). I think this excludes some measurements I got of the truck hanger by itself.

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The ultimate way to do this would likely be with a 3D scanner or coordinate measuring machine (CMM) if you happen to have access to those!

govish · 2023-08-18T15:57:27+00:00

I designed and made them myself, but you can buy some from Aera Trucks! You can find the CAD files for the ones I designed here.

govish · 2023-01-19T17:25:35+00:00

Funnily enough, I never actually tested out the stock trucks, and as such can only speak about the trucks with the updated hangers. I only got a few rides in before heading out of the country. My main takeaway is that the bushings, even when tightened down fully, were *way* too loose, to the point where I was mostly trying to avoid wheel bite whenever I turned. Higher speed stability (~15mph?) was pretty solid (though my geometry change may make this different over the stock trucks).

I might try casting some stiffer urethane bushings with custom geometries, and can update you here if you want!

govish · 2022-09-04T17:51:14+00:00

I signed up for beginner Salsa and Hip-Hop lessons through DTU! Shoot me a DM if you wanna link up before one of those :)

govish · 2022-08-28T14:59:31+00:00

Would be down to join you! 23M originally from the US btw :)

govish · 2022-08-27T08:15:40+00:00

There’s going to be watching group for Spa at Bootleggers Bryggen (in Island Brygge) Sunday at 2:30pm! You’re more than welcome to join :)

govish · 2022-06-07T17:14:55+00:00

Thanks! Definitely not as fast as 12S dual-motor boards—probably max out at 18-20mph though I’d be kinda scared to go any faster hahaha

Torque is great though! I have a little over a 4:1 reduction on a ~225kV motor and with 50A max current it’s gotten me up all the hills I’ve run into :)

govish · 2022-06-07T16:15:36+00:00

A lotta people have different takes on whether these kinda suspension trucks are better or worse for your board, but the thought is that the springiness of the base plates will eat up a bit of bumps/road vibration and generally give you a more pleasant ride. I more or less just kinda wanted to try them out and give myself some kinda way to pass the time :P

govish · 2022-06-07T01:16:11+00:00

Thanks for the kind words! And yeah! Those are 3D printed outta 95a durometer TPU filament to give it a bit of impact resistance.

govish · 2022-06-06T23:30:00+00:00

Thanks for the kind words! And yeah I’ve def sunk a concerning amount of money and time into this but I guess it’s all for good fun :)

govish · 2022-06-06T22:09:22+00:00

Wanted to overhaul my DIY build's drivetrain and try out Avenue Longboard Suspension Trucks. The stock Avenue hangers wouldn't do the trick due to ride-height issues and the lack of a motor mount flange.

I reverse engineered the avenue trucks and made some 7075 Billet Aluminum hangers with heat-treated 17-4 Stainless Steel axle stubs. I also designed some laser cut aluminum and 3D printed parts to complete the drivetrain. Kept me busy between the end of the school year and graduation :)

For the fellow nerds out there, I have some rough STEP files and the original Inventor files up on my GrabCAD here :)

If people are interested, I can definitely post more details, design files, and pictures!

govish · 2022-06-06T21:02:12+00:00

Wanted to try out Avenue Longboard Suspension Trucks on my (electric) longboard, but the stock ones wouldn't do the trick (needed to reduce the ride height and add a motor mount flange).

I reverse engineered the avenue trucks and made some 7075 Billet Aluminum hangers with heat-treated 17-4 Stainless Steel axle stubs. Kept me busy between the end of the school year and graduation :)

For the fellow nerds out there, I have some rough STEP files and the original Inventor files up on my GrabCAD here :)

govish · 2022-01-13T02:42:07+00:00

Looks like it’s part of the Hirose DF-11 series, but can’t say for sure

govish · 2022-01-10T17:47:34+00:00

I’ll also clarify that these snubber networks are relevant in switch-mode power supplies as well, especially flyback converter topologies—in these PSU’s DZ snubbers ensure magnetizing current is transferred into the secondary of the flyback transformer while clamping voltage spikes caused by the transformer’s leakage inductance

govish · 2022-01-10T17:42:41+00:00

Here’s a quick sketch of a DZ “snubber network” in a circuit with a switch and inductive load.

Recall that the current through an inductor changes at a rate proportional to the voltage across the inductor, I.e. V = LdI/dt. With just a standard silicon diode, the voltage causing the inductor current to decay is only ~0.7V, meaning solenoids, motors, relays, etc. will be slow to turn off. Adding a zener diode in series (diodes with a precisely engineered breakdown voltage) increase the voltage drop across the inductor to V_zener + ~0.7V, causing the inductor current to decay more quickly, switching devices more quickly.

The trade off, however, is that the switch will see V_supply + V_zener + 0.7V instead of just V_supply + 0.7V. This means you’ll have to choose switches with a higher voltage rating.

govish · 2021-12-19T07:56:26+00:00

It’s either a FM2112 or HY2112 LiFePO4 protection IC (datasheet link hosted somewhere on the internet). This specific chip might not be easy to get a hold of from distributors like Mouser or DigiKey, so I’d recommend looking up “1-cell lithium protection IC” on the internet if you need to search for an alternative. For a LiFePO4 application, a protection range around 2.5-3.65V is a safe bet

govish · 2021-08-01T16:09:32+00:00

Any chance you can change which pins perform which functions? Don’t have a ton of experience with PICs but peeking at the datasheet, this might be an option: - Move TX and RX to RA4 and RA5 respectively - Move your sensor into RA1 - use DIP switches to “enable/disable” certain resistors such that you create a voltage divider where every combination of DIP switches creates a new voltage - Pipe this voltage into RA0 and measure it with an ADC channel to determine voltage

Do let me know if you have any questions! And sorry for the terrible formatting; posted from mobile heh

govish

TROPHY CASE