madbeanpedals::forum

Projects => How Do I? Beginner's Paradise. => Topic started by: cvv on January 11, 2024, 06:45:15 AM

Title: Aion FX Theseus - Incorrect Voltages on IC2
Post by: cvv on January 11, 2024, 06:45:15 AM
I have built my first pedal, an Aion FX Theseus in kit form (docs -> https://aionfx.com/app/files/docs/theseus_kit_documentation.pdf).

I am getting sound out of both sides, but when checking to make sure I really did get _everything_ right I checked the voltage readings against those on page 30 of the docs and found an anomaly.

The reference voltages (from the docs) are from a 9.6V supply:
  IC1                          IC2
Pin Voltage                  Pin Voltage
1     4.66                    1    4.64
2     4.67                    2    4.64
3     4.25                    3    4.22
4     0.00                    4    0.00
5     4.57                    5    4.54
6     4.57                    6    4.54
7     4.56                    7    4.53
8     9.15                    8    9.15

And my voltages from a 9.4V supply are:
  IC1                          IC2
Pin Voltage                  Pin Voltage
1     4.56                    1    4.47
2     4.57                    2    4.50
3     4.19                    3    4.48
4     0.00                    4    0.00
5     4.48                    5    4.12
6     4.50                    6    4.58
7     4.47                    7    4.56
8     8.97                    8    8.98

From the above it would seem that the voltage on my IC2 pin 5 should be at pin 3 (schematic is on page 28 of the docs if that helps).

After searching I could not find a similar issue, so asking here in the hope that someone might know what I've done wrong.

Many thanks in advance.
Title: Re: Aion FX Theseus - Incorrect Voltages on IC2
Post by: Govmnt_Lacky on January 11, 2024, 12:23:53 PM
Looks fine to me. If the pedal is working properly, the voltage differences could be attributed to differences in part tolerances, difference in voltage, etc. We are talking less than 1/2 of a volt  :)

Rock on!
Title: Re: Aion FX Theseus - Incorrect Voltages on IC2
Post by: cvv on January 11, 2024, 02:37:20 PM
Thank you for confirming that all is well!  And Happy New Year!!