The Sherline CNC Controller Board is a sophisticated device designed to manage and control CNC machinery with precision. It is engineered to work efficiently with various software systems, although it is optimized for use with LinuxCNC. The board requires a minimum of an 800 MHz Pentium class computer for optimal performance in frequency mode, ensuring smooth and reliable operation.
This controller board features removable fuses and operates with a voltage range of five to 30 volts, offering better performance at higher voltages. It supports a current of 2 amps in a unipolar configuration, making it suitable for a wide range of applications. The board is capable of microstepping, providing 800 steps per revolution, which translates to 16,000 steps per inch with a .050-inch pitch leadscrew, allowing for high precision in CNC operations.
The board is equipped with a DB25 pinout for connectivity, which includes inputs and outputs for various directional and step controls. It also features headers on the PC board, such as H1, which can reduce motor power to a quarter after three seconds of inactivity, and H3, which can immediately cut power to the drivers in case of an emergency. The RESET header maintains the drivers in a reset condition when necessary.
Note: Ensure that the software used addresses the correct I/O lines for step and direction, especially when not using LinuxCNC.
1x Sherline CNC Controller Board
Logic high levels must exceed 2 volts
Logic low levels must be below 0.5 volts
Step pulses are active low
Step pulses must be at least 22 microseconds in duration
Lines labeled as LinuxCNC inputs or outputs can be disregarded in other systems
For non-LinuxCNC software, ensure the software addresses the correct I/O lines for step and direction
An 800 MHz Pentium class computer or faster is recommended for frequency mode
Motor power is reduced to half current after 3 seconds of inactivity; can be changed to 1/4 power with a jumper on H1
DB25 pinout:
1: Input from LinuxCNC (may be ignored in other systems)
2: X Direction
3: X Step
4: Y Direction
5: Y Step
6: Z Direction
7: Z Step
8: A Direction
9: A Step
10: NC
11: Output to LinuxCNC (may be ignored in other systems)
12: Output to LinuxCNC, XYZ home (may be ignored in other systems)
13: NC
14: Input from LinuxCNC, C1 (may be ignored in other systems)
16: Input from LinuxCNC, C2 (may be ignored in other systems)
17: NC
18-25: Ground
Headers on PC board:
H1: Reduces current to 1/4 after 3 seconds
H2: Unimplemented
H3: Removes power from drivers immediately (panic stop)
RESET: Holds the drivers in reset condition
Motor connectors: 5-pin DIN male
Voltage: 5 to 30 volts (better performance at higher voltage)
Current: 2 amp unipolar configuration
Steps: 800 steps per revolution (microstepping), equates to 16,000 steps/inch with 0.050″ pitch leadscrew
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at RoboItchi's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RoboItchi's troubleshooting process or of a verified shipping error by RoboItchi.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A ¥10,000 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RoboItchi's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RoboItchi and ordered specifically to fulfill a customer request.
To request a return, submit a support ticket from your account under My Support Tickets to obtain a Return Authorization (RA) number. Returns without an RA number will be refused.
