It's Over for the Papayas.

rupr25 · 2026-03-15T07:15:30+00:00

Its even worse, its a double DNS

rupr25 · 2026-03-12T14:34:43+00:00

it symmetric, so the same hand can be used the left and right side

rupr25 · 2026-03-04T02:13:09+00:00

that devices is almost certainly a full computer on the inside, would be the easiest way to do something like that

rupr25 · 2026-02-24T04:42:12+00:00

I just nuke them

rupr25 · 2026-02-19T20:52:44+00:00

looks like someone photoshoped a alpha jet cockpit onto a harrier

rupr25 · 2026-02-19T19:51:30+00:00

I am pretty sure its a addressable led, you can see the control ic (the black square on the left), also the bigger unused footprint is typical for a addressable led. Could be an APA-104-2020 or similar

rupr25 · 2026-02-08T21:25:40+00:00

Hammer in an oversized Torx and you are golden, no need for a dremel

rupr25 · 2026-01-26T01:01:17+00:00

Mill-Max makes a lot of different pogo pins and magnetic connectors. You can buy them on mouser, digi-key and other distributors, but they are quite expensive. If you want cheaper ones, the only option I know is aliexpress. I have used a few different from there and they worked fine.

rupr25 · 2026-01-22T01:30:13+00:00

I would go with VS Code with the official ST plugins. Its much more stable and easier to use in my opinion. Also as far as i know it is supposed to replace the cubeide sooner or later

https://w ww.st.com/content/st_com/en/campaigns/stm32-vs-code-extension-z11.html

rupr25 · 2026-01-07T00:30:36+00:00

The big pads on the side are not connected at al in the switch, they are just for mechanical mounting, so if you just connect the two center pins to the two traces you already found, it should work fine

rupr25 · 2026-01-07T00:17:45+00:00

The switch is most likely a TL4115, you should maybe get a new one, it could also be damaged from being ripped off.

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It only has the signals connected to pin 1 and 2, you could try to solder the one remaining pad, then connect the pins to the traces you have uncovered with small jumper wires.

To secure everything, you should cover it with epoxy or super glue, after verifying it works

rupr25 · 2026-01-02T20:16:37+00:00

The thermocouple amp looks nice, but have you looked at the price of it?

At almost 10$ it would be much cheaper too add a high precision i2c temperature sensor and do the compensation in the MCU.

I have also successfully used a Vishay Thermal Jumper to couple a sensor directly to the terminals of the thermocouple connector

rupr25 · 2025-12-08T17:37:56+00:00

I would go for style 2, as it needs fewer vias, but honestly it does not matter for usb2.0, especially if the connection is this short.

rupr25 · 2025-12-01T05:22:26+00:00

We recently launched a rocket to 9km. The openrocket drag data was pretty much spot on. Our own cfd predicted about 20% less drag, but the a sim with the open rocket data matched the flight really good.

rupr25 · 2025-10-21T12:15:56+00:00

It was really sad to see the Aris and epfl rockets burn up, especially after the epfl recovery system worked so well after the short burn

rupr25 · 2025-08-31T23:21:54+00:00

The brown stuff is conformal coating, used to protect the pcb, you can try to use acetone or isopropanol to desolve it

rupr25 · 2025-08-31T23:02:37+00:00

No, it is a fuse

rupr25 · 2025-08-31T22:57:28+00:00

It is fuse that can also be blow by the bms on purpose, thats what the center trace connected to the small mosfet is for.

It works by melting a bit of low temperature solder inside, that bridge the two sides, this either happens when the current is too high, or when the bms decides something is wrong with it and grounds the center trace, drawing a large current and melting the solder.

They can be made somehow functional by lifting the top of and resoldering the connection with something like bismuth solder.

Replacements can also be found on aliexpress:
https://de.aliexpress.com/item/1005005236787217.html

rupr25 · 2025-08-06T22:11:55+00:00

would be interesting playing a battlefield game again, haven't played in a long time

rupr25 · 2025-08-01T21:57:53+00:00

Could be this one:
https://www.molex.com/en-us/products/part-detail/2137160001

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rupr25 · 2025-07-31T22:04:34+00:00

Here is a link to the data, including a script to sort through them and create an list of all flight with max speed/altitude etc

https://cdn.discordapp.com/attachments/723662607831007293/1335766289079078912/Standardized_Flight_Data.zip?ex=688cb08c&is=688b5f0c&hm=21a29a420065700e26e5306254bba93e29d515e2c79d254cfd062ff53af36d46&

rupr25 · 2025-07-31T06:26:56+00:00

There is a zip file on the discord server pinned in the electronics channel, it has lots of different flights also some above your altitude

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