# My build progress **URL:** \ **Category:** DIY STUFF\ **Created:** [March 1, 2020, 8:57pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345 "2020-03-01T20:57:53Z")\ **Posts on this page:** 1\ **Showing post:** 6740
**Author:** ![clarionut](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@clarionut](https://lookmumnocomputer.discourse.group/u/clarionut)\ **Post date:** [October 8, 2025, 10:32am UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/6740 "2025-10-08T10:32:59Z")
Just completed, a module I hadn’t intended to build - a modified version of [Hagiwo’s 6-channel trigger sequencer](https://note.com/solder_state/n/n17c69afd484d). ![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/a/4/a49275cc880f7b40c6b54e23a687036ece2a018f.jpeg) However, having rewritten the code for the original Hagiwo version (see the discussion in the latter part of [this thread](https://lookmumnocomputer.discourse.group/t/hagiwo-6ch-drum-sequencer-4x4-matrix-keypad/7349/57)) I thought perhaps I should have one afer all. Unsurprisingly, this one is based on my revised hardware for the [Euclidean Rhythms](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/6698) module using a hardware SPI OLED display for maximum speed. Versions of my code for the 6-channel trigger sequencer (for both original Hagiwo I2C-based hardware and my modified SPI hardware) are on [Github](https://github.com/clarionut/6-channel-trg-sequencer). I built this module using the PCB layout for my version of the Euclidean Rhythms module, also on [Github](https://github.com/clarionut/Euclidean_Rhythms). I must just mention once again the advantage of using a SPI OLED display in an application like this which demands tight timing. It takes ~3ms for the Arduino to upload a fresh screenful to the OLED using hardware SPI compared with ~37ms using I2C. That ~35ms difference could easily be a very significant proportion of the total processing time. --- _[View the full topic](https://lookmumnocomputer.discourse.group/t/my-build-progress/345)._