PlantBot – The Plant Watering Robot

PlantBot – because watering plants is boring.

Laser Cutter Plans:

Here is a preview of what the plans look like:

For laser cutting, click here to download an SVG file of the plans


The calc_shoulder_angle function is dodgy – Instead of fixing it I entered in x y points with two potentiomenters to find out which ones line up over the planter box squares. Right now it doesn’t go to x-y points as expected. This will get fixed eventually.






Whats Next:

Arduino was used for fast prototyping, PlantBot V2 will have a custom pcb and be solar powered, possibly without a battery – just using capacitors. Need to do some experimentation to see if this is even possible. Will make a custom pcb with a uC that has a very low current power saving mode:)

Posted in Arduino, Hacks, Hardware, how to, Ideas, Projects | Tagged , , , | Leave a comment

Laser cut carboard planetary gear



Build Info:

Gears made using the gear extension in inkscape. The inside gear or ring gear was also made with this extension but I inverted it. I’ll be making a video tutorial on how to do this in the near future. The ring gear has 42 teeth, the 3 ‘planet’ gears have 12 teeth and the central ‘sun’ gear has 18 teeth. This website has lots of useful info on the mechanics and calculations involved in making a planetary gear. The main points to note are:

To get the gears to mesh properly, all teeth have the same pitch/spacing. Also use this equation to calculate the number of teeth required per gear so everything fits correctly:
R = 2 × P + S

R Number of teeth in ring gear
S Number of teeth in sun (middle) gear
P Number of teeth in planet gears

Finally, if you want the 3 ‘planet’ gears to sit at 120 degrees from each other, then both your sun gear and ring gear need to be evenly divisible by the number of planets. Follow these constraints and you are golden!

Design info:

Click here to download SVG file of planetary gear

All line widths in the svg file are set to 0.01mm. Depending on your vector graphics editor the svg file may appear blank when you first open it. You will need to switch to outline mode to see anything. In Inkscape this is done by clicking View > Display Mode > Outline.

Here is a png image of what the svg file drawings look like:

(Edit)- made another vid just showing the gears rotating……..hypnotic…cant….stop……watching

Posted in how to, Inkscape, laser cutter, Projects | Tagged , , , | 7 Comments

k40 40w chinese laser cutter review – VIDEO

Posted in Hardware, laser cutter, youtube | Tagged , , , | Leave a comment

k40 laser cutter : dial for laser power knob

The power adjust knob on this k40 laser cutter didn’t have a dial of any sort so it was hard to set power values for different materials like cardboard and acrylic.

Here is a picture of the dial:



To cut it out you could laser cut and etch it or print it out on paper and cut it out with a blade. The svg file linked below has the correct dimensions for the dial so it should print the correct size.

Posted in laser cutter | Tagged , , | 1 Comment