Reddit:Electronics

Two desiccant packs, humidity indicator, ESD bag and bubble wrap… for 2.54mm IDC headers!!!

Probably a touch overkill haha!

Components 1.100uf ,100v capacitor 2.bc547 transistor 3.4.7k resistor 4.inductor :value unknown cus I grab it off a computer power supply 5.1n4007 diode

It also makes this high frequency ringing when it's on like some scifi thing .

Recently placed an order with JLCPCB, and they sent an X-Ray of the board. It's for an LGA CAN transceiver with isolated power-CA-IS2062A. The transformer windings can also be seen.

I have made a schematic of analog FM receiver!!

This is my final semester at community college. I wil be attending a 4 year university this fall, as a junior, to finish off my bachelor's in electrical engineering. My final project is an analog function generator. It is capable of generating a sine wave, triangle wave, and a square wave. It is based on an online project called "Analog Function Generator" by "laserjocky". The circuit consists of op-amps, resistors, capacitors, transistors, potentiometers, and switches. The images are of the initial wave created by a specific op-amp and the final wave generated at the final output.

Here's a new interesting addition to my collection of Soviet equipment - the G2-57 hardware true RNG. Didn't expect it to be so packed inside, but I guess you need a lot of circuitry to provide basically anything you'd want from an RNG. This device outputs: 1. Binary random signal with adjustable amplitude and bit width, with ability to generate endless random signal or repeating random patterns of up to 21 bits. 2. Analog random signal with gaussian distribution and adjustable frequency range. 3. Analog random signal with continuous uniform distribution and adjustable frequency range.

Followed this link:
https://www.circuits-diy.com/simple-flashing-led-using-transistors-led-flasher/

The size of a small pencil. Can be carried anywhere. No IC, just TTL. Making 3D printed case for it too.

I bought this Tek 453A on eBay from Germany for a super affordable 1900 CZK (around 84 USD), making it an irresistible purchase. Upon receiving it, the scope was in great shape (almost brand new). I will use this scope a lot in my analog RF projects. Anyways, the inside is so beautiful, basically a work of art, so I decided to post it here.

My 555 timer(up) in astable mode My flip flop D(down) done with logic gates

My multimeters (generic DT-9205A) 9V battery died. So, I tried to replace the 9V battery with a single 18560 rechargeable battery (3.7V). I connected the battery to a small charging/protec board (TP4056), then connected the output of that to a step up converter (MT3608) (to step up the batteries 3.7V into 9V). Finally, i connected the output of the step up converter to the positive and neg of the battery terminals of the multimeter.

The Problem: The multimeter doesn't turn on :0 ,

after some measuring with a simple LED tester, it seems:

• Battery gives 4Volts
• Charger/Prot outputs 4Volts
• Step Up outputs 0Volts
• Also, when i measure the voltage at the Vin+ and - of the step up i read 0 Volts

I tested the circuit (batt+charg/prot+stepup) alone before connecting it to the multimeter and it was functioning normally, giving 9V. Here are some images of the stuff.

A mount PCB for Bosch BME680 sensor (Temperature / Humidity / Air Pressure / Air Quality), made so it stands out of the device case and is less affected by device heating.

Smallest thing I've made so far, with the sensor itself being 3x3mm with 8 pads. If you have a PCB thick enough, the sensor can be soldered on top of it with 4 pins on each side nicely fitting to the traces on the PCB.

Ordinary components are so beautiful close up.

Got really into CRTs a bunch of years ago, figured that the grail project would be to just build a driver for myself, from the ground up. Wanted to make it with entirely off the shelf components, so thats what I did. No proprietary, custom, or obsolete/NRND used. So far still need to work on blanking and more on the software side but I've got pretty reliable performance on the tubes I have right now. Eventually will get it to play oscilloscope music on its own, but haven't gotten there yet.

I arrived home to school and found out, damm it was my favourite