SKU: 11384624769

Yamaha CS-01 MIDI Retrofit

Sale price$49.46 Regular price$54.95
Save 10%

Pay in installments of $13.74 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Yamaha CS-01 MIDI RetrofitThis a a modified UMR2 MIDI retrofit board specifically designed for use inside a Yamaha CS01 (I or II) without removing the speaker and requires a hole to be drilled for the TRS MIDI jack. The device has be simplified by removing connections not required for the CS01 so it CANNOT be used with other devices. It also features psiMIDI which means it can accept either 3. 5 TRS A or TRS B MIDI cable This is an DIY kit which includes: CS01 UMR2 PCB:

This a a modified UMR2 MIDI retrofit board specifically designed for use inside a Yamaha CS01 (I or II) without removing the speaker and requires a hole to be drilled for the TRS MIDI jack.  The device has be simplified by removing connections not required for the CS01 so it CANNOT be used with other devices.  It also features psiMIDI which means it can accept either 3.5 TRS A or TRS B MIDI cable

 

This is an DIY kit which includes:

  • CS01 UMR2 PCB: Complete and preprogrammed with UMR2 firmware 
  • Ribbon cable, wires, TRS MIDI Jack
  • 2m long TRS MIDI A Cable

 

 

Install Instructions:

Step 1: Ribbon cable Prep

  1. Strand out one end to 1.2 cm from where the cable is stripped
  2. Remove the insulation by gently pulling off the ends and tin the wires
  3. On the other side, simply remove the ends and tin, no stranding needed

 

Step 2: MIDI Board Prep

  1. Tin all pads with a small blob of solder on both adapter and CPU board

Step 3: CS01 board prep (CS01 II is the same)

  1. Trim the leads on the by the keyboard pads where shown
  2. Add fresh solder to the 12 pads, try to make them even in size
  3. Solder the DC+ and DC- wires where shown

 

Step 4: MIDI Board soldering

  1. Solder the ribbon cable starting with the middle 2 pins and work your way out.  The red strip is pin D0
  2. On the solder adapter board solder the other end of the ribbon (not that D0 is not marked)
  3. Remove the ground tab from the TRS jack and solder on the wires

 

Step 5: CS01 Drilling/MIDI Jack.

  1. Drill an 8mm (5/16") hole where shown.  A step drill is recommended.  THIS IS A DELICATE STEP SO EXTREME CARE SHOULD BE TAKEN
  2. Install the MIDI Jack followed by the nut from the other side.  Tighten with needle nose pliers.  Apply sticker (cut in half first)

 

Step 6: Install the MIDI board

  1. Place the adapter board on top of the keyboard pins 
  2. Solder the outermost pins to the pads below them and solder the rest.  Test with meter if needed, those points correspond to the red and black wired below
  3. Remove the backing from the tape on the back of the adapter
  4. Route the MIDI wires in the gap between the keyboard and main board
  5. Stick the MIDI board where shown running the wires under the board with a 90 bend in the ribbon
  6. Solder the MIDI wires to the marked terminals THE ORIENTATION DOES NOT MATTER
  7. Solder the DC+ and DC- wires

 

Step 7: Calibration

  1. Connect TRS MIDI to your keyboard, set the footing on the CS to 32 (IMPORTANT)
  2. Turn the power switch on.  While holding the program button down with something pointy but not sharp, plug the DC jack in.  Release the pointy thing
  3. LED will flash.  Press the F key on your MIDI keyboard on the octave you want the MIDI notes to trigger the CS-01 to start,  THE MIDI WILL ONLY TRIGGER 32 NOTES FROM THAT F NOTE.  Once the MIDI note is received, the device will pause to save and the LED will flash again
  4. Starting with the first key on the CS-01, you must play each not sequentially, after the note is received, the LED will turn red when the note is on, then green flashing again for the next note.  Repeat for all notes
  5. When complete, press program again, LED will go red then go out
  6. Unplug device, and power up again
  7. Check all MIDI note work over the 32 key range, if any notes are missing, repeat the process

 


Original Design by John Staskevich, 2017

GitHub - staskevich/UMR2: Universal MIDI retrofit PCB for matrixed-switch keyboards.

Synths/UMR2CS01 at main · MichiganSynthWorks/Synths

This derivative work is licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 11384624769

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Christian Burt
Dallas, US
★★★★★ 5
Easy install
Color: Single Slat Gloss Black, Size: 2023+G20
Fits well. Made of plastic but very easy install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
M
Verified Purchase
Mecha Drew
Alexandria, US
★★★★★ 1
I should have read all the other reviews ...
Color: Single Slat Gloss Black, Size: 2010-2013 E92, Color: Single Slat Gloss Black, Size: 2010-2013 E92
I read all the bad reviews, but I gave it a shot anyways Tabs wont clip in place and fitment is slightly off.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
C
Verified Purchase
Charles Sherin
Port Orchard, US
★★★★★ 5
Worth it
Color: Single Slat Gloss Black, Size: 2006-2009 E92
For perfect and looks great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
M
Verified Purchase
Madison
San Leandro, US
★★★★★ 5
Very nice quality
Color: Single Slat Gloss Black, Size: 2019-2022 G20
I have a 2022 330i bmw and it fit perfectly! Looks just like photos online and delivered quick!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
N
Verified Purchase
Nick
Boise, US
★★★★★ 4
Good Item
Color: Single Slat Gloss Black, Size: 2002-2005 E46
Good cost to product ratio, but fitment is a little loose
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026

recommand products