Reddit:Electronics
My latest Project: an RP2040 board called Nova
 | Hey everyone! I’m excited to share my latest project: a tiny, open-source RP2040-based board with an integrated addressable LED matrix. It’s built on a 4-layer PCB, and the LEDs are ultra-small (just 1mm x 1mm each), using WS2812 for full addressability. [link] [comments] |
Possible future import tariffs on PCBs / electronic components / test equipment coming into USA
Homebrew Bullshit Meter/Detector; complete with an active Bullshit amplifier probe!
 | submitted by /u/BlownUpCapacitor [link] [comments] |
My first inverter!
 | I started tinkering with transistors because it’s what I am mostly learning this semester. First I tried to control output using the PWM pin from my RPi. After that I got the idea of building an RC car and doing the input to the motor from scratch. My first working test is an H-bridge using 4 npn and 2 pnp transistors with modulation through the Q2 and Q4 npn. Right now I can generate a rectangular wave. The 2 LEDs are in opposite directions, so a positive voltage turns one and a negative the other. The This week I want to bring it to uni and test the sinusoidal generation and efficiency with the oscilloscope. [link] [comments] |
Weekly discussion, complaint, and rant thread
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Script for extracting stackup templates from JLCPCB and turning them into stackup files
 | submitted by /u/gsuberland [link] [comments] |
Warning: Many cheap clip leads coming out of China are made of iron wire.
 | submitted by /u/PM_Me_Your_Deviance [link] [comments] |
Supply current of low power devices is very intermittent and difficult to measure. This tool is emulating the battery by a bunch of capacitors. They get recharged by defined pulses (1A, 1ms) which are counted for the result.
 | submitted by /u/Careful_Volume_3935 [link] [comments] |
I just published a page summarizing different ways of creating digital/analogue delays, covering RC/Schmitt based designs, 555 timers, long pieces of wire, chains of inverter gates, bucket brigade IC and MCUs. All content free and open source.
 | submitted by /u/gbmhunter [link] [comments] |
My first own designed PCB a Led Chaser with a 2x 555 + 74hc595 for Halloween prop. I Converted a old alarm system to this.
 | submitted by /u/Dear-Beautiful2243 [link] [comments] |
My first 8-bit CPU on FPGA: FliPGA01 (details in comments)
 | submitted by /u/Training_Impact_5767 [link] [comments] |
My first appliance repair
 | Long time lurker. I consider myself reasonably handy but this was the first time working on an appliance. Grabbed this microwave for $50 on Facebook marketplace 6 months ago. Friday it did the whirlpool hum of death. Unsure if it was the diode, capacitor or magnetron I replaced them all. Got all components off Amazon and replacement took 1.5 hours from taking it down to putting it back up. Now I’m on Facebook marketplace looking for “broken” appliances I can fix and flip haha. Thanks for this sub for giving me the confidence to do this! [link] [comments] |
My first RLC circuit as a end of semester project (circuits 1)
 | Just wanted to share my first dc circuit, it is for my first circuits class, as a end of semester project. It consist in just a relay, a 1000uf capacitor and a 330 ohm resistor. It still is not the proper or final circuit, as I'm using a 5v relay with 12v as power source. Also it is conected in the "inverse way" as the leds need to imitate signal lights from a car. Tomorrow I will buy the correct parts but for the moment I'm happy to see that this works and I can do the math to understand it ! [link] [comments] |
Inductor i wound for an FM radio circuit
 | submitted by /u/A_very_gay_boi [link] [comments] |
I built a 1500W E-bike battery from 130 Disposable Vape cells
 | submitted by /u/thedefibulator [link] [comments] |
22 years ago - to the day. I was 12 and had made my first audio amplifier!
 | submitted by /u/One-Cardiologist-462 [link] [comments] |
Samsung Curved Js9000
I'm considering buying the Samsung Curved Js9000 off of FB marketplace for $180. I'm seeing this TV has great reviews for when it came out in 2015, but does it hold up with todays models? I think it's a good price, but I want to make sure it won't be out dated in the next 3-5 years
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Just created my first ever video. It explains the concept of RC circuits in a more entertaining way, and I hope many will find it useful!
 | submitted by /u/ethanmhardie [link] [comments] |
Weekly discussion, complaint, and rant thread
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Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.
Reddit-wide rules do apply.
To see the newest posts, sort the comments by "new" (instead of "best" or "top").
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i have disigned my first pcb!
 | [link] [comments] |
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