#555timer

2025-01-02

New video! I'm building a simple 555 timer based logic probe from spare parts I had laying around.

YouTube: youtu.be/NhgjBUmnA7k
PeerTube: makertube.net/w/cuUPCfYmzMeL8D

#LogicProbe #DIYLabEquipment #LogicTester #NE555 #555Timer #Circuit #Schematics #DIY #Homemade #Electronics #Tinkering

Thumbnail for my video. A self-made logic probe in a black project enclosure on my workbench. A red probe from a cheap multimeter is connected to the box which has a green "high" LED and a red "Low" LED plus a switch that is labelled "TTL". In the background, there's the edge of a circuit board which the logic probe is connected to. The overlayed text reads "DIY Logic Probe".
loptalopta
2024-07-13

The book shop has a magazine on sale from 2022. Not sure whether it's a reprint but I'm awfully tempted to buy it because of an article about the NE555.

2024-06-21

The Eurorack ADSR PCBs are now available, more details and schematics on my website polykit.rocks/adsr
#eurorack #adsr #envelope #synthdiy #555timer

Fully assembled Eurorack ADSR module
grayrattusgrayrattus
2024-01-25
Huge NE555N chip. It's as big as someone's chest.
2024-01-20

After some minor adjustments, I now transferred it onto a soldered #perfboard.
Short demo video: makertube.net/w/jiuDuVyXH15G8u
#soldering #electronics #diysynth #555timer #NE555 #ADSR #envelopegenerator

the finished board. there are four potentiometers at the bottom edge, labeled "Attack", "Decay", "Sustain", and "Release". the power connector is at the top left corner, and there are two sets of two pin pinheaders underneath, with labels "Gate", and "Out" at the left edge. a red LED is directly below the Out pins. in the middle there are the two 8-pin ICs LM358 and NE555.the back side of the board showing the solderingthe board connected to the power source and with attached oscilloscope showing the output of a short and a longer button press. the four phases can be clearly identified on the screen.
loptalopta
2024-01-19

@bigzaphod Haven't seen the video but I first got to potch with them in 1988 and I still think they're worthy of investigation, experimentation and use.

2024-01-18

Now YouTube is recommending to me every electronics project video showing how to make your own USB powerbank "Keep Alive" circuit
youtu.be/fHCnblxkbwI
#electronics #USB #powerbank #555timer

2024-01-16

#prototyping an #ADSR #envelope generator on a solderless #breadboard for my #diysynth experiments. I used René Schmitz' design as reference, but using a #bipolar #NE555 instead of the required #CMOS variant, since I didn't have any of those.
I captured the output using my cheap #oscilloscope and used a simple push button.
It seems to work fine, though. I can live with the higher power usage.
Next step: transfer it to a soldered perfboard.
#envelopegenerator #electronics #555 #555timer

the finished circuit on the solderless breadboard. for the input, I used a push button to test it.photo of the oscilloscope capturing the output of the circuit after pushing the button for a while. you can clearly see the four phases for attack, decay, sustain, and release.
2024-01-14

[Great Scott!] shows 4 different methods to keep a USB power bank awake
youtu.be/ty5JueA1wRc

One involves using a resistive load and another uses a 555 timer

#PowerBank #555timer #electronics #USB

2023-12-23

And my Atari Punk Console is finished. It's really very cramped in there, but it worked and I can still close it. I also added date and signature on the inside.
#AtariPunkConsole #synth #diysynth #555timer

the finished Atari Punk Console. the front is kept in blue and black, including the power LED. the charging indicator LEDs at the top are red and green.view inside with everything assembled and glued to place. it's very cramped.the back side of the lid. it has the date of completion and my signature written with white Edding marker
2023-12-22

It's almost done now. The main #circuit is soldered and tested, the boost converter is set to 9.2V and only the headphone jack and the cables to the main board are missing.
Some of the components are held in place by hot glue.
#AtariPunkConsole #synth #diysynth #soldering #555timer #555 #oscillator #hotglue

the finished circuit board for the Atari Punk Console. the two 555 timers, the capacitors and the connectors for the potentiometers can be seenback side of the circuit board. there are two jumper cables crossing other wires. it looks a bit messy, thoughthe open case filled with all components, except the main circuit board. almost all connections are done and a bit of hot glue keeps them in place
2023-10-08

Found 3 SG90 (9g) servos in the e-waste at work. Testing them with my 555 based servo tester. Two still work. One is seized up and just gets very warm

#electronics #servo #555timer #ewaste

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