DIY CNC 3D Printer Robot Forum - Recent Topics

Arduino UNO Sensor I/O Shield Compatible with Arduino IDE YwRobot

Ray — Wed, 08 Apr 2026 14:27:52 +0000

There are multiple versions/usage for this shield

https://diycnc.ca/product/arduino-uno-sensor-i-o-shield-compatible-with-arduino-ide-ywrobot/

UNO R3 Pro I/O Board

Ray — Wed, 08 Apr 2026 00:44:02 +0000

① Reset Button

Press the reset button to restart the program.

② USB-to-Serial Chip
This chip converts the data received from USB into serial data and sends it to the main control chip.

③ 5V/2A Power Supply Module
The power supply module provides power to the main board. It regulates an external 6–12V input to 5V/2A (10W) output, which can drive multiple servos, toy motors, micro linear sliders, and other devices.

④ 6–9V Battery Connector
A dedicated battery connector that can be connected to an AA battery holder or 18650 lithium battery pack. This makes the development board easier to arrange when building mobile projects.

⑤ USB Interface
Used for program downloading and USB power supply.

⑥ 3.3V Power Chip
Provides 3.3V voltage output for the development board.

⑦ Automatic Switching Controller for External Power and USB Power
An automatic power switching system composed of an FDN340P MOSFET and LMV358IDGKR amplifier.
By default, the development board is powered through the USB interface. When an external power supply is connected, the controller automatically disconnects USB power and switches to the external power source. When the external power is removed, it automatically switches back to USB power. This function protects the computer from interference caused by external power supplies connected to the development board.

⑧ Resettable Fuse
If a short circuit occurs due to incorrect wiring on the development board, the fuse automatically disconnects the circuit between the board and the computer, protecting the computer’s USB port from damage or system crashes.

⑨ Digital G | V | S Expansion Interface
The onboard digital G | V | S interface makes it easier and faster to connect sensors or actuators, eliminating the need for an expansion shield when building projects.

G = GND (power negative)
V = VCC (power positive)
S = IO signal interface
The G/V pins provide 5V/2A output, meeting the power requirements of most sensors and actuators.

⑩ Analog G | V | S Expansion Interface
The onboard analog G | V | S expansion interface allows convenient connection of analog sensors. Additional A6 and A7 analog input pins are provided to support more sensors.

⑪ ICSP Serial Programming Interface
Used for writing the bootloader to the development board or for downloading programs using a compiler.

⑫ ATMEGA328P Main Controller Chip
The ATMEGA328P is the brain of the development board. It handles program storage, execution, computation, and signal input/output.

⑬ Crystal Oscillator
Provides the clock signal for the ATMEGA328P main controller chip.

⑭ LED Indicator Lights
The board includes four LED indicators:

ON – Power indicator (lights up when power is on)
RX / TX – Serial communication indicators (blink when serial data is transmitted or received)
L – D13 pin indicator (lights up when the D13 signal is HIGH)

Standalone Products

Frank — Sat, 04 Apr 2026 14:22:02 +0000

Some products in our store are categorized as “Standalone” products, which means they cannot be shipped together with other items due to packaging considerations. Since Canada is one of the largest countries in the world, shipping costs vary significantly depending on distance. For example, customers who are located closer to our warehouse should pay lower shipping fees. Currently, 3D printer filament, and filament dryer are assigned as a standalone product. If filament is added to your shopping cart, no other products can be added. Conversely, if other products are already in the cart, you will not be able to add filament and will receive an error notification. In fact, this approach helps reduce shipping costs for local customers.
Under our current shipping policy, GTA customers receive the minimum shipping rate for filament orders. For example, shipping fee will stop increasing when purchasing 5 or 6 rolls of filament (depending on whether they are refill rolls or spool packs).

Mounting bracket for the square sensor switch

John — Tue, 31 Mar 2026 01:03:23 +0000

Hi,

Do you have a mounting bracket for this kind of square sensor? such likes this image:

https://diycnc.ca/product/square-inductive-proximity-sensor-switch-5mm-detection-distance/

Thanks

Ground Ballscrews

lparkerguitarco — Fri, 27 Mar 2026 17:19:44 +0000

Do the Ground ballscrews actually meet C5 accuracy? Hard to imagine given the price, but I'm curious if anyone has any experience. Also curious if anyone has any experience with the double nuts for sale here. Just chasing the last little bit of backlash in a ball screw assembly.

Thanks,

Lewis

FAQs - Regarding Shipping and Delivery

Frank — Fri, 06 Mar 2026 23:19:19 +0000

I am using this topic to answer questions regarding the Order Status, Shipping and Delivery. Here is our Shipping and Delivery Policy

Welcome to ask more questions.

2040 Actuator Kits

yaning — Tue, 03 Mar 2026 15:47:28 +0000

I am working on building a fixture for mechanical testing with gantry/CNC type of control, and looking at the following actuator kits:

"2040 V Actuator Kit": https://diycnc.ca/product/3d-printer-motion-control-kit-for-x-y-axis-2040-v-slot/
"2040 H Actuator Kit": https://diycnc.ca/product/2040-actuator-motion-control-kit-horizontal/

I had a few questions about them:

What model of stepper motor comes with the kits? Are there any speed/torque curves for these, or any max speed/min accuracy specs for the motion system as a whole?
Are the “V” and “H” type of kits the same as each other, just differing in the orientation of how the plates are mounted with respect to the v-slot? How should I think about choosing one orientation vs the other, e.g. is one more suitable for certain kinds of loads/motions/axis of motion?
Are there CAD files for the mounting frames for the stepper motors? (Everything else is more standard and I can find elsewhere online)
I am looking to get ~50cm long pieces, but was a little unsure how the order page for the “H” kit works — do we enter the length in cm as the qty? In that case, the price comes out to $8.50, which doesn’t seem realistic, given the “V” kit is $35 for the 0-50cm length. Is that expected?

2080 V Slot Aluminum Extrusion Profile

Rachelle — Mon, 02 Mar 2026 15:28:32 +0000

What is the longest section of 2080 V Slot Aluminum Extrusion you are able to ship?
What is your estimated timeline for delivery?

Confused with the stepper motor drivers

JeffZ — Sun, 01 Mar 2026 01:05:33 +0000

Hi, these motor drivers are very confusing to me. I asked AI, but it sounds like it doesn't know too much either... do you guys have more pictures of these? I am looking for a DM556, or M556D, or something similar.

https://diycnc.ca/product/nema-23-stepper-motor-with-driver-kit-leadshine-2/

thank you

C-Beam Linear Actuator Kit Build

Ray — Sat, 28 Feb 2026 16:43:37 +0000

I am using this topic to introduce our C-Beam actuator kits. 'C-Beam' is another name for the 4080 V-slot extrusion profile. Many DIY CNC machines and larger 3D printers use this profile to support POM wheel motion. Here is the 4080 V-slot: https://diycnc.ca/product/4080-v-slot-aluminum-profile/