#perfboard — Public Fediverse posts

Since it'll take some time for the PCBs to arrive, I decided to make a #prototype on #perfboard. It works fine, and I can test my programs using it. Turns out an #ATtiny814 is good enough for the task.
The #WS2812B #SMD #LEDs are very bright, though, and reducing brightness also reduces the possible color range.
The different color shadings are not very distinguishable, yet. I might have to adjust the color palette.
#diyelectronics #soldering

I received a few AVR128DA32, which have four times the flash size - now I don't have to keep this in mind while experimenting. Also, I soldered a small #perfboard for the #GameBoyPrinter emulator. I used a few 30AWG flexible silicon wires to route the connections - they fit perfectly through the holes. It's 3cm x 7cm size and I placed the SD slot on the bottom to keep it intact, and the connector for the link cable underneath the display. Now I have to decide which size looks better, 1.3" or 0.9" #oled.
#AVRDA #microcontroller #diyelectronics #GameBoy #soldering #Arduino

One reason for this dev board was to build a #GameBoyPrinter emulator for my #GameBoyCamera. The ATtiny814 just didn't have enough RAM. The NeoGB-Printer is a bit too specialized, I'll adapt the #Arduino GameBoy printer emulator from https://github.com/mofosyne/arduino-gameboy-printer-emulator to my needs. It'll have output on SD card and maybe a TFT status display, the prototype is already wired up. It'll give it a proper board later (might just be a #perfboard).
#AVRDA #prototyping #solderlessbreadboard #diyelectronics #GameBoy

When building electronics project for permanent use - i.e. after testing on a solderless breadboard - you normally go to a #soldered perforated board of some type as a #prototype, or even for very-low-volume production.

There are different types of boards. I dislike "matrix" boards, which are just isolated pads on a grid, i.e. there are no connections between any of them. Some people swear by these; I swear at them.

I prefer protoboards that have multiple holes per pad (so you can connect multiple component leads without having to add an explicit wire jumper). If they've also got #busses - sets of pads that run the whole length or width of the board - so much the better!

Some are #crap: laminated paper PCBs where the pads lift off the board if you even try to desolder something you added. Row/column labels missing, or (like I found with some recently) that don't line up between the front and back of the board 😆 , or most egregiously, they don't actually show the pad pattern on the front of the board, so you have to keep flipping it to check your parts are correctly placed. One example below.

I have some from "BusBoard Prototype Systems" that I like. The SB4 is a 38 x 24 (912 hole) board that is #snappable into quarters. Two of the quarters have rows that are 4-hole, 2-hole, 4-hole. The other two are 5 2-hole pads. Both types have a single bus running along each of the 2 long sides.

But ...

1/x

#electronics #hobby #ProtoBoard #PerfBoard #MatrixBoard #Chinesium

When building electronics project for permanent use - i.e. after testing on a solderless breadboard - you normally go to a #soldered perforated board of some type as a #prototype, or even for very-low-volume production.

There are different types of boards. I dislike "matrix" boards, which are just isolated pads on a grid, i.e. there are no connections between any of them. Some people swear by these; I swear at them.

I prefer protoboards that have multiple holes per pad (so you can connect multiple component leads without having to add an explicit wire jumper). If they've also got #busses - sets of pads that run the whole length or width of the board - so much the better!

Some are #crap: laminated paper PCBs where the pads lift off the board if you even try to desolder something you added. Row/column labels missing, or (like I found with some recently) that don't line up between the front and back of the board 😆 , or most egregiously, they don't actually show the pad pattern on the front of the board, so you have to keep flipping it to check your parts are correctly placed. One example below.

I have some from "BusBoard Prototype Systems" that I like. The SB4 is a 38 x 24 (912 hole) board that is #snappable into quarters. Two of the quarters have rows that are 4-hole, 2-hole, 4-hole. The other two are 5 2-hole pads. Both types have a single bus running along each of the 2 long sides.

But ...

1/x

#electronics #hobby #ProtoBoard #PerfBoard #MatrixBoard #Chinesium

When building electronics project for permanent use - i.e. after testing on a solderless breadboard - you normally go to a #soldered perforated board of some type as a #prototype, or even for very-low-volume production.

There are different types of boards. I dislike "matrix" boards, which are just isolated pads on a grid, i.e. there are no connections between any of them. Some people swear by these; I swear at them.

I prefer protoboards that have multiple holes per pad (so you can connect multiple component leads without having to add an explicit wire jumper). If they've also got #busses - sets of pads that run the whole length or width of the board - so much the better!

Some are #crap: laminated paper PCBs where the pads lift off the board if you even try to desolder something you added. Row/column labels missing, or (like I found with some recently) that don't line up between the front and back of the board 😆 , or most egregiously, they don't actually show the pad pattern on the front of the board, so you have to keep flipping it to check your parts are correctly placed. One example below.

I have some from "BusBoard Prototype Systems" that I like. The SB4 is a 38 x 24 (912 hole) board that is #snappable into quarters. Two of the quarters have rows that are 4-hole, 2-hole, 4-hole. The other two are 5 2-hole pads. Both types have a single bus running along each of the 2 long sides.

But ...

1/x

#electronics #hobby #ProtoBoard #PerfBoard #MatrixBoard #Chinesium

When building electronics project for permanent use - i.e. after testing on a solderless breadboard - you normally go to a #soldered perforated board of some type as a #prototype, or even for very-low-volume production.

There are different types of boards. I dislike "matrix" boards, which are just isolated pads on a grid, i.e. there are no connections between any of them. Some people swear by these; I swear at them.

I prefer protoboards that have multiple holes per pad (so you can connect multiple component leads without having to add an explicit wire jumper). If they've also got #busses - sets of pads that run the whole length or width of the board - so much the better!

Some are #crap: laminated paper PCBs where the pads lift off the board if you even try to desolder something you added. Row/column labels missing, or (like I found with some recently) that don't line up between the front and back of the board 😆 , or most egregiously, they don't actually show the pad pattern on the front of the board, so you have to keep flipping it to check your parts are correctly placed. One example below.

I have some from "BusBoard Prototype Systems" that I like. The SB4 is a 38 x 24 (912 hole) board that is #snappable into quarters. Two of the quarters have rows that are 4-hole, 2-hole, 4-hole. The other two are 5 2-hole pads. Both types have a single bus running along each of the 2 long sides.

But ...

1/x

#electronics #hobby #ProtoBoard #PerfBoard #MatrixBoard #Chinesium

When building electronics project for permanent use - i.e. after testing on a solderless breadboard - you normally go to a #soldered perforated board of some type as a #prototype, or even for very-low-volume production.

There are different types of boards. I dislike "matrix" boards, which are just isolated pads on a grid, i.e. there are no connections between any of them. Some people swear by these; I swear at them.

I prefer protoboards that have multiple holes per pad (so you can connect multiple component leads without having to add an explicit wire jumper). If they've also got #busses - sets of pads that run the whole length or width of the board - so much the better!

Some are #crap: laminated paper PCBs where the pads lift off the board if you even try to desolder something you added. Row/column labels missing, or (like I found with some recently) that don't line up between the front and back of the board 😆 , or most egregiously, they don't actually show the pad pattern on the front of the board, so you have to keep flipping it to check your parts are correctly placed. One example below.

I have some from "BusBoard Prototype Systems" that I like. The SB4 is a 38 x 24 (912 hole) board that is #snappable into quarters. Two of the quarters have rows that are 4-hole, 2-hole, 4-hole. The other two are 5 2-hole pads. Both types have a single bus running along each of the 2 long sides.

But ...

1/x

#electronics #hobby #ProtoBoard #PerfBoard #MatrixBoard #Chinesium

#soldered the second #PCB that arrived yesterday. This time it's #diysynth related. It's a drop-in replacement for my #perfboard 10 step #sequencer control board. It has identical connectors and was one more test of my PCB design skills and quality of @aislerhq manufacturing. It went really nice and works perfectly in place of the old one.
I only used a bottom ground plane and a different size for the board, so I'll have to redo it again for my final project.
#synthesizer #electronics

I had this old TBA800 IC lying around. So, I designed an audio amplifier circuit. It was fun to solded and works fine. It should support 5W at 16 Ohms load and 24V supply. I only tested it with 12V and 4 Ohms speaker.
The hardest part was soldering the tabs, since they act as heat sink, too.
I used #KiCad for the schematics and layout, although I had to create my own symbol and footprint for the IC. Also had to cut holes for the tabs into the #perfboard.
#electronics #AudioAmp #soldering #diy

I had this old TBA800 IC lying around. So, I designed an audio amplifier circuit. It was fun to solded and works fine. It should support 5W at 16 Ohms load and 24V supply. I only tested it with 12V and 4 Ohms speaker.
The hardest part was soldering the tabs, since they act as heat sink, too.
I used #KiCad for the schematics and layout, although I had to create my own symbol and footprint for the IC. Also had to cut holes for the tabs into the #perfboard.
#electronics #AudioAmp #soldering #diy

I had this old TBA800 IC lying around. So, I designed an audio amplifier circuit. It was fun to solded and works fine. It should support 5W at 16 Ohms load and 24V supply. I only tested it with 12V and 4 Ohms speaker.
The hardest part was soldering the tabs, since they act as heat sink, too.
I used #KiCad for the schematics and layout, although I had to create my own symbol and footprint for the IC. Also had to cut holes for the tabs into the #perfboard.
#electronics #AudioAmp #soldering #diy

I had this old TBA800 IC lying around. So, I designed an audio amplifier circuit. It was fun to solded and works fine. It should support 5W at 16 Ohms load and 24V supply. I only tested it with 12V and 4 Ohms speaker.
The hardest part was soldering the tabs, since they act as heat sink, too.
I used #KiCad for the schematics and layout, although I had to create my own symbol and footprint for the IC. Also had to cut holes for the tabs into the #perfboard.
#electronics #AudioAmp #soldering #diy

I had this old TBA800 IC lying around. So, I designed an audio amplifier circuit. It was fun to solded and works fine. It should support 5W at 16 Ohms load and 24V supply. I only tested it with 12V and 4 Ohms speaker.
The hardest part was soldering the tabs, since they act as heat sink, too.
I used #KiCad for the schematics and layout, although I had to create my own symbol and footprint for the IC. Also had to cut holes for the tabs into the #perfboard.
#electronics #AudioAmp #soldering #diy

A Simple Laser Harp MIDI Instrument - Craig Lindley is a technical author and a prolific maker of things. This simple pr... - https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #musicalhacks #wemosd1mini #laserharp #perfboard #lasercut #esp32 #midi #ldr

A Simple Laser Harp MIDI Instrument - Craig Lindley is a technical author and a prolific maker of things. This simple pr... - https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #musicalhacks #wemosd1mini #laserharp #perfboard #lasercut #esp32 #midi #ldr

A Simple Laser Harp MIDI Instrument - Craig Lindley is a technical author and a prolific maker of things. This simple pr... - https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #musicalhacks #wemosd1mini #laserharp #perfboard #lasercut #esp32 #midi #ldr

A Simple Laser Harp MIDI Instrument - Craig Lindley is a technical author and a prolific maker of things. This simple pr... - https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #musicalhacks #wemosd1mini #laserharp #perfboard #lasercut #esp32 #midi #ldr

A Simple Laser Harp MIDI Instrument - Craig Lindley is a technical author and a prolific maker of things. This simple pr... - https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #musicalhacks #wemosd1mini #laserharp #perfboard #lasercut #esp32 #midi #ldr

A Simple Laser Harp MIDI Instrument https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #MusicalHacks #wemosd1mini #laserharp #perfboard #lasercut #ESP32 #midi #ldr

A Simple Laser Harp MIDI Instrument https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #MusicalHacks #wemosd1mini #laserharp #perfboard #lasercut #ESP32 #midi #ldr

A Simple Laser Harp MIDI Instrument https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #MusicalHacks #wemosd1mini #laserharp #perfboard #lasercut #ESP32 #midi #ldr

A Simple Laser Harp MIDI Instrument https://hackaday.com/2024/06/19/a-simple-laser-harp-midi-instrument/ #MusicalHacks #wemosd1mini #laserharp #perfboard #lasercut #ESP32 #midi #ldr

Finished building the DrawBridge.
It seems to work, but I need to connect an external 5V power supply, since my laptop doesn't provide enough voltage to power the drive.
Also, this #floppy drive was old, and makes squeaky noises when trying to write. The inserted floppy shows scratch markings, too.
So, I'll need a proper floppy drive.
#Amiga #floppydrive #soldering #perfboard #ArduinoNano #Arduino

Protoboard Z80 Computer Teaches the Basics https://hackaday.com/2024/05/11/protoboard-z80-computer-teaches-the-basics/ #Retrocomputing #handwired #perfboard #Parts #z80

Protoboard Z80 Computer Teaches the Basics - As curious people, we’re all incredibly fortunate to live in an age where informat... - https://hackaday.com/2024/05/11/protoboard-z80-computer-teaches-the-basics/ #retrocomputing #handwired #perfboard #parts #z80

Planning on creating an #enclosure for my #diysynth #perfboard modules.
I'll use 5mm transparent #polystyrene for the body, and 2mm #aluminium for the front panel.
Here is a crude #prototype done in #cardboard.
I'll have to unsolder the #potentiometers and #LEDs to place them on the panel. The audio jacks will be connected to the pin headers.
#modular #synthesizer #crafting

After fixing it, I decided to test it. It is connected in place of the step sequencer. It seems to have a small issue with triggering, sometimes causing the sample and hold to resample when releasing the key. Have to look into this.
Here is a short demo of me pressing some buttons: https://makertube.net/w/g88KJst76crKDDJeDxx4QN
#diysynth #synthesizer #perfboard

Finished #soldering the #perfboard yesterday. Sadly, it didn't work as intended. Now comes the fun part — analyzing and fault finding. Already fixed one of the issues by replacing a #capacitor with a bigger one. Now the trigger and gate are generated correctly, but the output buffer for them are constantly high. The sample and hold for the CV outputs worked from the beginning.
#diysynth #keyboard #OpAmps

Finished #soldering the #perfboard yesterday. Sadly, it didn't work as intended. Now comes the fun part — analyzing and fault finding. Already fixed one of the issues by replacing a #capacitor with a bigger one. Now the trigger and gate are generated correctly, but the output buffer for them are constantly high. The sample and hold for the CV outputs worked from the beginning.
#diysynth #keyboard #OpAmps

Finished #soldering the #perfboard yesterday. Sadly, it didn't work as intended. Now comes the fun part — analyzing and fault finding. Already fixed one of the issues by replacing a #capacitor with a bigger one. Now the trigger and gate are generated correctly, but the output buffer for them are constantly high. The sample and hold for the CV outputs worked from the beginning.
#diysynth #keyboard #OpAmps

Finished #soldering the #perfboard yesterday. Sadly, it didn't work as intended. Now comes the fun part — analyzing and fault finding. Already fixed one of the issues by replacing a #capacitor with a bigger one. Now the trigger and gate are generated correctly, but the output buffer for them are constantly high. The sample and hold for the CV outputs worked from the beginning.
#diysynth #keyboard #OpAmps

More #soldering done. All components are placed now, only have to do a few connections and jumper wires. I really notice how I'm improving.
Also, the return of the dancing #transistors, this time two #JFET.
#diysynth #perfboard #dancingtransistors

Today's #soldering progress on my single buss 1V/oct keyboard, the controller part. Only missing the electrolytic and poly capacitors, some wiring and connectors.

Schematics from #MFOS:
https://musicfromouterspace.com/analogsynth_new/SINGLEBUSSKEYBOARD2007/SINGLEBUSSKEYBOARD2007.php

I did the key part for one octave previously, and modified the schematic for the parts I have available. The key part will be chainable, so I can add more octaves if everything works fine.

#perfboard #diysynth

Today's #soldering progress on my single buss 1V/oct keyboard, the controller part. Only missing the electrolytic and poly capacitors, some wiring and connectors.

Schematics from #MFOS:
https://musicfromouterspace.com/analogsynth_new/SINGLEBUSSKEYBOARD2007/SINGLEBUSSKEYBOARD2007.php

I did the key part for one octave previously, and modified the schematic for the parts I have available. The key part will be chainable, so I can add more octaves if everything works fine.

#perfboard #diysynth

Today's #soldering progress on my single buss 1V/oct keyboard, the controller part. Only missing the electrolytic and poly capacitors, some wiring and connectors.

Schematics from #MFOS:
https://musicfromouterspace.com/analogsynth_new/SINGLEBUSSKEYBOARD2007/SINGLEBUSSKEYBOARD2007.php

I did the key part for one octave previously, and modified the schematic for the parts I have available. The key part will be chainable, so I can add more octaves if everything works fine.

#perfboard #diysynth

Today's #soldering progress on my single buss 1V/oct keyboard, the controller part. Only missing the electrolytic and poly capacitors, some wiring and connectors.

Schematics from #MFOS:
https://musicfromouterspace.com/analogsynth_new/SINGLEBUSSKEYBOARD2007/SINGLEBUSSKEYBOARD2007.php

I did the key part for one octave previously, and modified the schematic for the parts I have available. The key part will be chainable, so I can add more octaves if everything works fine.

#perfboard #diysynth

Today's #soldering progress on my single buss 1V/oct keyboard, the controller part. Only missing the electrolytic and poly capacitors, some wiring and connectors.

Schematics from #MFOS:
https://musicfromouterspace.com/analogsynth_new/SINGLEBUSSKEYBOARD2007/SINGLEBUSSKEYBOARD2007.php

I did the key part for one octave previously, and modified the schematic for the parts I have available. The key part will be chainable, so I can add more octaves if everything works fine.

#perfboard #diysynth

Today's #soldering project done: a #mixer with three inputs using a #TL072 #opamp. I have a layout planned for a slightly bigger #perfboard with four to six inputs.
#diysynth

Today's #soldering project done: a #mixer with three inputs using a #TL072 #opamp. I have a layout planned for a slightly bigger #perfboard with four to six inputs.
#diysynth

Today's #soldering project done: a #mixer with three inputs using a #TL072 #opamp. I have a layout planned for a slightly bigger #perfboard with four to six inputs.
#diysynth

Today's #soldering project done: a #mixer with three inputs using a #TL072 #opamp. I have a layout planned for a slightly bigger #perfboard with four to six inputs.
#diysynth

Today's #soldering project done: a #mixer with three inputs using a #TL072 #opamp. I have a layout planned for a slightly bigger #perfboard with four to six inputs.
#diysynth

Today's #soldering project: six step expansion #perfboard for the #sequencer - now I can make use of all 10 steps.
One of the switches was defective and I had to replace it after soldering.
#electronics #diysynth

@mixal
Here is the #schematics done in #KiCad, as well as the "PCB" layout used for the #perfboard and the 3D rendering.
I chose 1µF and 100nF for the caps, smaller being the faster one.
It was inspired heavily by the design of SoundBender found here: https://soundbender36.wordpress.com/2019/12/28/36-synthetiseur-modulaire-diy-dual-lfo/
#diysynth

The last module of my #diysynth that I had on breadboard is now soldered to a #perfboard. It's a #LFO with triangle and square wave output, with shape #potentiometer that changes the triangle wave towards sawtooth or ramp, and the duty cycle of the square wave between 5% and 95%.
It has two speed settings with 0.12 to 5.3 Hz, or 1/80th to 0.5 Hz frequency. I might build a second one with different capacitors for higher frequencies.
#soldering #synthesizer #oscillator #electronics

Finished #soldering my #VCO #perfboard. It is calibrated to 1V/Octave and outputs sawtooth, square/pulse, and triangle waveforms.
The heart is a #CD40106, using only one of the inverted Schmitt triggers. I tried adding more, but couldn't fit them properly. Maybe if I left out the triangle wave output, which would remove the upper #TL074.
My power supply board is getting full, I should add a few more sockets.
Demo video: https://makertube.net/w/bxShHoDY5cCP7krbjnFgh8
#diysynth #waveform

oh no! how could this happen... I made a mistake when transferring my hand-drawn #schematics into #KiCad. Needless to say, the circuit doesn't work as intended.
Thankfully, it only affects a sparsly populated area on the #perfboard and I can fix it by cutting two wires and doing a bit of re-routing. doesn't even require a jumper wire.
#soldering #electronics

I call them the #dancing #transistor pair... #superglued together and middle leg of one crosses into the hole of a side leg of the other one.
#electronics #perfboard #soldering

Finished #soldering the next #perfboard, the #sequencer core with the #CD4017 counter chip and a #TL074 #OpAmp. I have connected the control board and the rest, see a demo here: https://makertube.net/w/mEobXiLn5so6Rpe2zQA16E
After soldering all components, I had the idea of adding a #LED for the gate output. Fortunately it fit very nicely.
Only VCO and LFO are still on solderless breadboards, and I wasted some time searching for a fault turning out being bad connections on the breadboard...
#electronics #diysynth