Please can we control smoothly the z-axis with g-code (not only pen up and pen down, but also finer intermediate positions on z) ?

SORRY ! It can not ! follow : http://bachinmaker.com/wiki/doku.php?id=bachin_draw_t-a4

Question for the seller: do you have an api into this machine? also your wiki link is broken. thanks.

There is no API, if you want to write your own software, please refer to grbl.

Can i control the up down remotely and draw on a tablet or smartphone with a rubber pen instead of an ink pen and paper?

You control how far up the pen is by simply securing it higher in the holder. Use the software that comes with it to make sure you are within the bounds of whatever you're drawing on. The robot doesn't care what kind of pen it's holding, it drawing whatever you tell it to using whatever you put in it, on top of whatever you put under it. That being said, it may bound your tablet or smartphone around a bit since the motors can be a bit energetic.

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CNC Router Drawing Robot Kit Writer XYZ Plotter iDraw Hand Writing Robot Kit Open Source for Maker/Geek, Working Area A4

Product ID: 607288783

📐21x30cm (A4) working area for versatile projects

⚙️42H42S-150A Stepper Motor for high precision

🖥️Supports JPG, PNG, SVG, BMP & G-code files

E£ 81123

Duties & taxes included

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Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

✍️ Elevate your desk game with the robot that writes like you never get tired!

BUILT TO LAST REPEAT - Durable aluminum & stainless steel frame with end-stop function enables reliable batch jobs and long-term creative hustle.
OPEN SOURCE INNOVATION - Customize and expand your XYZ plotter with full interface documentation—perfect for makers, educators, and automation pros.
PRECISION MEETS CREATIVITY - Stepper motor and thickened pulleys deliver smooth, high-speed, and ultra-precise drawing every time.
PLUG PLAY WITH PRO SOFTWARE - Bachin Draw software supports multiple image formats and one-button laser engraving/drawing switch for seamless control.
A 4 CANVAS FOR YOUR MASTERPIECES - Generous 21x30cm working area lets you create posters, handwritten notes, and colorful layered artworks effortlessly.

The BachinDraw CNC Router Drawing Robot Kit is a robust, open-source XYZ plotter designed for precision handwriting and multi-color drawing on A4-sized surfaces. Powered by a stable 42H42S-150A stepper motor and crafted from premium aluminum and stainless steel, it supports a wide range of image formats and custom fonts via dedicated Bachin Draw software. Ideal for makers, educators, and small businesses, it offers repeatable, high-speed, and high-precision output with easy-to-use software and comprehensive tutorials.

Specifications

ASIN	B081B6VZYH
ASIN	B081B6VZYH
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#94,800 in Computers ( See Top 100 in Computers ) #239 in Graphic Tablets
Color	Black
Customer Reviews	3.6 3.6 out of 5 stars (107)
Customer reviews	3.6 3.6 out of 5 stars (107)
Date First Available	22 July 2023
Date First Available	22 July 2023
Included components	Hand Writing Robot Kit
Item Package Quantity	1
Item Weight	5.85 Kilograms
Item model number	Hand Writing Robot Kit
Item model number	Hand Writing Robot Kit
Manufacturer	Bachin
Manufacturer	Bachin
Material	aluminum +stainless steel
Part number	Hand Writing Robot Kit
Power source type	ac/dc
Product Dimensions	41 x 40 x 21 cm; 5.85 kg
Product Dimensions	41 x 40 x 21 cm; 5.85 kg
Voltage	12 Volts

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