News
NISSE Rev. 8 Featuring a 32-bit MCU Now Available, Including Optional Bluetooth Wireless Technology
September 3, 2025
Esrille introduces the NISSE Revision 8 controller boards, featuring the 32‑bit SAMD21G18A MCU built on the ARM Cortex‑M0+ architecture.
Starting September 2025, every NISSE keyboard ships with this next‑generation controller board.
The new firmware source code is available on GitHub. This release completes the transition from the legacy Microchip Libraries for Applications (MLA) to the MPLAB Harmony v3 framework.
Bluetooth® Wireless Technology Model (Optional)
NISSE is now available in an optional wireless model, offering both USB and Bluetooth for flexible connectivity.
UF2 Bootloader
NISSE revision 8 features a UF2-based bootloader developed by Microsoft, enabling firmware updates without the need for dedicated software. Our forked bootloader source code is available on GitHub.
For customers who already have NISSE
You can upgrade your NISSE to revison 8. Please contact us by email or leave a comment in the Order Request Form for the upgrade options.
Firmware Update
October 20, 2023
New firmware is available from Downloads:
| NISSE Revision | Firmware Version |
|---|---|
| Rev. 6 to 7 | 1.15 |
| Rev. 1 to 5 | 0.32 |
NISSE is now USB Type-C compatible
October 20, 2023
Esrille updated the NISSE to revision 7 with the USB Type-C connector.
The keyboard firmware is same for NISSE revision 6 and revision 7.
Firmware Update
November 1, 2022
New firmware is available from Downloads:
| NISSE Revision | Firmware Version |
|---|---|
| Rev. 6 | 1.13 |
| Rev. 1 to 5 | 0.30 |
NISSE is now hot-swappable
August 30, 2022
We redesigned the left and right PCBs to use hot-swappable sockets.
You can replace key switches on the latest NISSE; no soldering is necessary.
All orders have been built with new hot-swappable PCBs since August 2022.
For customers who already have NISSE
If your NISSE is revision five or later, you can order new left and right PCB boards at US$70.00, excluding key switches and international shipping and handling costs. Please contact us by email or leave a comment in the Order Request Form for the upgrade.
The revision number of your NISSE can be checked by [FN]-[F1].
NISSE with GATERON Silent White switches
June 2, 2021
We have started taking orders for Esrille New Keyboard − NISSE with GATERON Silent White switches.
If you would like to use GATERON Silent White switches, please select "GATERON Silent White" from "MX Switch Type" in the Order Request Form.
Firmware Update
April 19, 2021
New firmware is available from Downloads:
| NISSE Revision | Firmware Version |
|---|---|
| Rev. 6 | 1.11 |
| Rev. 1 to 5 | 0.28 |
Firmware Update
January 12, 2021
New firmware is available from Downloads:
| NISSE Revision | Firmware Version |
|---|---|
| Rev. 6 | 1.09 |
| Rev. 1 to 5 | 0.27 |
Firmware Update
December 4, 2020
New firmware is available from Downloads:
| NISSE Revision | Firmware Version |
|---|---|
| Rev. 6 | 1.08 |
| Rev. 1 to 5 | 0.26 |
NISSE revision 6
May 7, 2020
Esrille updated the USB controller board of NISSE to revision 6 with PIC18F47J53 MCU.
PIC18F47J53 provides more code space for the future firmware update.
All orders will be shipped with the revision 6 controller board from today.
For customers who already have NISSE
If your NISSE is revision 5, you can order a revision 6 controller board at US$25.00, excluding international shipping and handling costs. Please contact us by email or leave a comment in your Order Request Form for the upgrade.
The revision number of your NISSE can be checked by [FN]-[F1].
Firmware Update
May 7, 2020
New firmware is available from Downloads:
| NISSE Revision | Firmware Version |
|---|---|
| Rev. 6 | 1.05 |
| Rev. 1 to 5 | 0.23 |
Changes to the previous version:
- Support xc, xs and other modes in Modifier Key layouts set by FN-F6.
- Do not transmit IME on/off key codes when [FN]-[F2] (OS) is set to 'pc'. Japanese specific shift key handling is also turned off in the 'pc' mode.
- Refine the layout of the FN Layer.
NISSE with 17.5 mm key-spacing
June 5, 2015
We have started taking orders for Esrille New Keyboard − NISSE with 17.5 mm key-spacing (Size M), in addition to the NISSE with the standard 18.8 mm key-spacing (Size L). Esrille New Keyboard − NISSE (Size M) provides even better usability for users with smaller hands.
Backgrounds: The size of hands varies considerably from person to person. Keyboards makers have been expected to release keyboards in multiple sizes for a long time without based on the "one-size-fits-all" mentality. Esrille New Keyboard − NISSE has been designed to provide better usability for touch-typists. The aluminum enclosure is designed to let you rest your forearms on the work surface while typing following the ergonomic recommendations.