I do not believe I was drunk while laying out this circuit on a protoboard.
But I'm having difficulty coming up with an alternate hypothesis for how I'm finding so many errors in the layout.
#electronics #hobby #diy #drunk #hypothesis #errors #layout #protoboard
A photo of the first of two small circuit boards making up my homebuilt Boss HM-2 "Heavy Metal" guitar effects pedal. This board contains the input connection as well as the distortion circuitry (which is done in stages, involving transistors and opamps with multiple types and stages of diode clipping).
This is the second circuit board in my home-made Boss HM-2 "Heavy Metal" guitar effects pedal. This one contains four operational amplifiers (opamps) which make up the tone controls and output level control..
For anyone who's curious, here's some crappy photos of the two boards I made. They're divided up differently than the original in mine, the "volume board" (a better description would be distortion and tone controls) includes the opamps 3a, 3b, 2a, and 2b, plus […]
[Original post on mindly.social]
#Confession time...
I spent ten minutes wondering why I was having such trouble cutting a trace on one of my custom protoboard PCBs - was my knife too dull? Was there something wrong with the board I'm using? Is it connected somewhere that I'm forgetting about?
I looked at everything multiple […]
A scan of the underside of a cheap perforated prototyping circuit board - "protoboard" or "perfboard" - showing its pattern of pads and holes, along with the brand/model name "Radio Shaek 2". :wink: This is a typical crappy generic Chinese board, made from laminated paper. The copper pads are very thin and the glue holding them to the board isn't great, so they lift off the board very easily when soldering, or especially desoldering. The holes aren't very well centered in the pads. There's no soldermask, so it's easy to get accidental solder bridges. The board is browish tan, and has an 18 x 24 grid of holes, so 432 holes total. There are 2 continuous busses running up the middle of the board. On either side are rows consisting of (from outside to in) a 2-hole pad, three single-hole pads, and a 3-hole pad.
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 […]
[Original post on mindly.social]
I think I found out why these proto boards were so cheap...
The row and column labels on the top side don't actually match the ones on the bottom side. Column "L" on the top is "N" on the bottom...
#PCB #ProtoBoard #prototype #board #solder #electronics #cheap #chinesium
