# 808 hihats need some help

**URL:** <https://lookmumnocomputer.discourse.group/t/808-hihats-need-some-help/4000>\
**Category:** DIY STUFF\
**Created:** [September 16, 2021, 8:36pm UTC](https://lookmumnocomputer.discourse.group/t/808-hihats-need-some-help/4000 "2021-09-16T20:36:25Z")\
**Posts on this page:** 5\
**Page:** 4

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**Author:** ![sebastian](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sebastian/32/39_2.png) [@sebastian](https://lookmumnocomputer.discourse.group/u/sebastian)\
**Post date:** [February 12, 2022, 9:20pm UTC](https://lookmumnocomputer.discourse.group/t/808-hihats-need-some-help/4000/62 "2022-02-12T21:20:50Z")

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I made a quick demo video, hope this link works!! 🙂

[https://mamot.fr/system/media\_attachments/files/107/787/106/387/522/803/original/a2f7cc66de41cfad.mp4](https://mamot.fr/system/media_attachments/files/107/787/106/387/522/803/original/a2f7cc66de41cfad.mp4)

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**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\
**Post date:** [February 12, 2022, 11:24pm UTC](https://lookmumnocomputer.discourse.group/t/808-hihats-need-some-help/4000/63 "2022-02-12T23:24:04Z")

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Sounds amazing!………….

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**Author:** ![stmllr](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/stmllr/32/5055_2.png) [@stmllr](https://lookmumnocomputer.discourse.group/u/stmllr)\
**Post date:** [November 16, 2022, 12:01am UTC](https://lookmumnocomputer.discourse.group/t/808-hihats-need-some-help/4000/64 "2022-11-16T00:01:55Z")

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Sounds awesome!  
I guess that’s the one, right? [GitHub - sebastianbeyer/SO\_hihat](https://github.com/sebastianbeyer/SO_hihat)

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**Author:** ![sebastian](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sebastian/32/39_2.png) [@sebastian](https://lookmumnocomputer.discourse.group/u/sebastian)\
**Post date:** [November 16, 2022, 7:54am UTC](https://lookmumnocomputer.discourse.group/t/808-hihats-need-some-help/4000/65 "2022-11-16T07:54:55Z")

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Yes, exactly! I still have pcbs (with a slight error) to sell (Europe, Germany) if you’re interested 🙂

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**Author:** ![stmllr](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/stmllr/32/5055_2.png) [@stmllr](https://lookmumnocomputer.discourse.group/u/stmllr)\
**Post date:** [December 26, 2022, 11:10pm UTC](https://lookmumnocomputer.discourse.group/t/808-hihats-need-some-help/4000/66 "2022-12-26T23:10:23Z")

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If you got a PCB with serial XXXXXXXX-YYY-220117, you could change the following things to catch up with the [latest PCB version](https://github.com/sebastianbeyer/SO_hihat/commits/main/kicad):

- Replace R51 (33k) with a wire
- Replace R14 and R64 (18k) each with 20k
- Replace C26 (10u) with 1u
- Add R15 (10k) to pin 1+2 of RV6

Trigger Inputs/Outputs are interchanged:

- Trigger inputs (J2 and J7) are on the wrong side. This can be fixed by cutting the respective traces and adding a wire from the J2(T) to the right end of R36 and from J7(T) to the left end of R2
- CH/OH Outputs (J4 and J8) are also on the wrong side. Cross-wire R32 to J8 and R55 to J4 to fix it.

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