silver-reed-write

A controller and interface for the Silver Reed sk840

Installation

Web interface

1. npm install
2. npm run dev
3. The web interface will be running at http://localhost:5173/silver-reed-write/

Microcontroller

I'm using a Xiao RP2040 with Arduino C.

To compile and upload the sketch with the Arduino CLI:

arduino-cli compile --fqbn rp2040:rp2040:seeed_xiao_rp2040 silver_reed_controller/silver_reed_controller.ino && \
arduino-cli upload -p /dev/ttyACM0 --fqbn rp2040:rp2040:seeed_xiao_rp2040 silver_reed_controller/silver_reed_controller.ino

Pins

• (DIN 1) ND1: Needle 1. Sets the position of the pattern. (I do not use this - that's what the service manual says.)
• (DIN 2) KSL: Point Cam. In range: High = in knitting range
• (DIN 3) DOB: Data Out Buffer. Black pixel is off, White pixel is on
• (DIN 4) CCP: Carriage Clock Pulse. Output solenoid on rising edge
• (DIN 5) HOK: Carriage Direction. Low = To right, High = To left
• (DIN 6) 16v: Power the solenoids which select the needles
• (DIN 7) 5v: Supplies the logic on the board
• (DIN 8) GND: Ground

Dev notes

• If you're using VSCode/Cursor, you need to set the language mode to tailwindcss for the css file or else it will complain about the at rules.

Helpful Links

Some people have done similar projects which work with AYAB:

• https://pointinthecloud.com/2024-12-15-000000.html
• https://github.com/MathKnitting/silverreed-firmware
• https://github.com/romkal/silverduino

I found these manuals/docs helpful:

• Service manual: https://mkmanuals.com/downloadable/download/sample/sample_id/307/
• EC1 parts catalog: https://mkmanuals.com/downloadable/download/sample/sample_id/1483/
• the last two pages of this service manual for the 500 series are helpful (pin numbers are not the same as sk840) https://mkmanuals.com/downloadable/download/sample/sample_id/1479/