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Messages - Thomas_H

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1
Global Annoucements / Re: Our new moderator - jimilee!
« on: June 24, 2020, 04:10:29 AM »
Hi Jimmi,  welcome to the club!

2
Open Discussion / Re: New project: Signal tracer/injection pen
« on: June 13, 2020, 12:28:02 PM »
In theory, could I use this as a tiny, albeit not-great-sounding, guitar amp (ignoring the square wave injection bits)?  Just a weird thought, I suppose (thinking about basic listening tests to see if pedal controls are working, etc.)

Yes, you can. You will be able to hear any signal that is comming through the test pen - although not very HiFi like :-)

Thomas

3
Open Discussion / Re: New project: Signal tracer/injection pen
« on: June 12, 2020, 11:45:29 AM »
The switches and loudspeaker are included and by the time the pens I ordered for sale arrive also the testing pins I ordered will be here and everything is in the kit.

Currently testing different speakers ;-)

I am also checking if I can get testclips like the one in the video of decent quality to include it as well but it might not work out.


Thomas

4
Open Discussion / Re: New project: Signal tracer/injection pen
« on: June 12, 2020, 12:11:01 AM »
Test signal currently is a square wave.
Unit would be prepopulated with SMD parts and you need to solder the switches and loudspeaker yourself.

I am aiming below USD 20 for the kit.

5
Open Discussion / Re: Freeform circuits - the next, next level
« on: June 11, 2020, 12:11:27 PM »
Thats really cool!

6
Open Discussion / Re: New project: Signal tracer/injection pen
« on: June 11, 2020, 12:10:42 PM »
Added link to youtube demo video:


Let me know what you think!

Thomas

7
Open Discussion / Re: New project: Signal tracer/injection pen
« on: June 11, 2020, 07:06:01 AM »
The device does both. It injects the signal via clip and you tip the pen to the trace/solder joint to hear if it is there.

8
Open Discussion / New project: Signal tracer/injection pen
« on: June 11, 2020, 05:25:59 AM »
Hi guys,

after some long silence I have put up speed again and I am trying out a few new things.
I set up a project to try out PCBA (PCB and Assembly) service.

I wanted to create something usefull, so knowing that a lot of support requests sooner or later have the question: "Did you use a signal probe to veryfy your circuit?" I created this:

Link to demovideo on YouTube:  https://youtu.be/C7YJBo8ySLI



Signal tracer/injector pen features:
  • handy tool - thus the pen design
  • powered by 9V pedal source
  • switchable signal generator burst or alternating (950Hz/1050Hz)
  • switchable instrument (200mV) or line (2V) signal level
  • amplifier and mini loudspaker in(on) the pen
  • SMD components already soldered

Do you think this will be usefull for the community?

yours
Thomas

9
Build Reports / Re: Speaker box build
« on: May 09, 2018, 04:32:42 AM »
Compliments on completing this task!

I tried with an RN52 module a few years back and gave up.

best
Thomas

10
Hi, check the output cap of the 5 band eq. It may be leaking dc.
You may waht to add a pull-down resistor at the output of the eq.

Best
Thomas

11
Build Reports / Re: N.Fish, Brown Eye, Tree Drive and Flower Vibe
« on: June 16, 2016, 03:08:15 PM »
Great stuff!

12
Build Reports / Re: Up Goer Two (Triton Delay)
« on: May 26, 2016, 03:35:04 PM »
Great build! Impressive negative etch.

13
Build Reports / Re: The procrastination build report(s)
« on: May 24, 2016, 02:16:37 AM »
Impressive!

14
Build Reports / Re: 1590a SMD 4 Knob Engineer's Thumb
« on: May 22, 2016, 03:34:58 PM »
Well done!

15
Build Reports / Re: Black Lab
« on: May 20, 2016, 06:05:27 AM »
Nice build! and nice board from Aion.

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