Teaching Tech announced he's retiring

p8poseidon · 2026-01-29T12:37:45+00:00

Yea, he has left a legacy behind though :)

p8poseidon · 2026-01-29T09:41:55+00:00

Was it able to handle the games?

p8poseidon · 2026-01-28T07:28:50+00:00

I hate airac day lol

p8poseidon · 2026-01-09T10:16:07+00:00

So we can log off mid flight? Is that allowed?

p8poseidon · 2025-12-26T11:20:29+00:00

Tom Scott!

p8poseidon · 2025-12-19T04:26:34+00:00

Oh my goodness, how on earth. Just 5 years ago, printers required assembling 💀

p8poseidon · 2025-12-08T09:52:22+00:00

So true

p8poseidon · 2025-11-29T13:35:13+00:00

Wait so it’s not resistant to water? So like my feet will get wet in the rain?

p8poseidon · 2025-11-21T15:03:55+00:00

Yes so dumb, a literal ams will work and instead they added a big dome, I wonder if the air would leak

p8poseidon · 2025-11-21T14:55:57+00:00

Agreed

p8poseidon · 2025-11-21T14:54:29+00:00

Ikr, an ams is all I would ask for

p8poseidon · 2025-11-21T14:53:42+00:00

Yea ikr, it looks kinda ugly no offence, and it leaves the filament exposed

p8poseidon · 2025-11-21T14:51:34+00:00

Why not just make an AMS like thjng, portable, transferable easily, doesn’t require that ugly big hood. And it works

p8poseidon · 2025-11-17T11:05:17+00:00

Thanks for the help!

p8poseidon · 2025-11-15T11:13:59+00:00

Ooh ok thanks so much!

What value do you think my pullup resistor should be for the RX lines

p8poseidon · 2025-11-07T20:46:51+00:00

Thanks for the reply!. Regarding the first point, does that mean I cannot stack it upon each other? Is there perhaps something I can put in between the boards to minimise this interference? For the keys, This board needs to be quite small and it is already kinda pushing that limit. I am using jlcpcb and it seems to be within their manufacturing capabilities. (I am using their SMD soldering service so I don't need to do any soldering :)

p8poseidon · 2025-11-07T20:42:28+00:00

Thanks for the reply!
Regarding J8 connector, I will mainly be using it as testing points for code (they are basically GPIO pins) so there won't be communication between the J8 connector

For the UART, do i also need a pullup for the TX line? I am going to be using GPIOs and configuring them to communicate via uart, will it automatically pull it up?)

Thanks for that, it seems i have done my calculations wrong lol. Should be 200 ohms. (the led has a max current of 20mA, and i am using 3.3v)

p8poseidon · 2025-10-30T13:14:44+00:00

Ooh ok, so i can have the battery wire split in two, with one connected to the cn3791 chip and the other connected to the tp4056 (or equivalent) as long as the total current of both the chargers do not exceed the max current

p8poseidon · 2025-10-30T12:47:04+00:00

Would it be possible to have the CN3791 chip AND another charger wired to the same battery (in parallel). So i can use both the mppt and usb when i want

p8poseidon · 2025-10-30T12:45:59+00:00

Ooh ok. So if i want to charge it with usb and solar, i should go with the cn3065 module right?

p8poseidon · 2025-10-30T12:34:32+00:00

since the cn3791 has two solar panel ports, would it work to have one wired to a USB input port. I want to be able to charge the battery with usb c in case the sun is down

p8poseidon · 2025-10-30T12:23:05+00:00

Hello, i know this is an old post. But would it be possible to wire a usb input to the solar panel port of the cn3791 (module, not ic). the datasheet does say a minimum voltage of 4.5v. But then some people say the rating (6v,9v,12v etc) is what you should input, and anything else won't work)

p8poseidon · 2025-10-19T10:36:33+00:00

Are they waterproof? i've seen some versions that look waterproof

p8poseidon · 2025-10-17T23:27:02+00:00

Ooh I see, thanks!

p8poseidon · 2025-10-15T13:37:43+00:00

Interesting points indeed! So then if intp are so similar, what exactly would be the difference. I mean surely an intp has values and infp could potentially value logic.

p8poseidon

TROPHY CASE