Tea Gallows | Tea Timer with PCB by RBEPrinter

Last crawled date: 3 years ago

This is a small tea timer that uses a linear drive to pull out the gallon of the tea.
I used a small geared stepper motor to drive the linear drive. The 10 leds indicate the timer state and over a knob you can set the time 1-10 minutes.
1st UPDATE
I made some changes at the back cover and I added a small plate to hold a pcb.
An other part I've modified (changed the length) of the gallon holder.
2nd UPDATE
I made some changes to the top/bottom covers and added a belt guide to place two endstop switches and some other small changes
3rd UPDATE
I added the latest version and include the Fusion360 files too
4th UPDATE
Added simple Arduino test sketch. Design of an simple pcb is in progress
5th UPDATE
I added a simple pcb and eagle project. I replaced the Arduino with an ESP8266 12E to make other ideas possible, like Alexa integration.
BUILD INSTRUCTION
Later on I will post a short manual how to build this thing
ELECTRIC PARTS
30cm GT20 belt
2 GT20 pulleys
1 m5 20mm screws (belt, needed)
1 m5 lock nut
2 m3 10mm screws (motor, needed)
2 light gates like TCXT2103 (ends top switches)
12 m4 screws 10-16mm (optional, replace with some glue)
12 m4 (lock-)nuts (optional, replace with some glue)
washers m4/m5/m3
10 3mm leds
10 100Ω resistors (for 3v led)
1 Arduino Nano
1 encoder with pushbutton
1 A4988 stepper driver
1 12V 2 phase mini stepper motor (like https://www.ebay.de/itm/DC-12V-2-phase-4-wire-gear-stepper-motor-Full-metal-Geared-box-Schrittmotor/253181270426?hash=item3af2c7999a:g:ckkAAOSw7ThUnNif)
1 alu pipe 15cm@4mm
1 alu pipe 15cm@4mm (lengh depends on the cup you want to use)
3D PRINTED PARTS
back cover 102g
belt_holder 11g
bottom_plate 23g
clamp holder 7g
guide left 7g
linear drive case 102g
pcb holder 12g (optional)
2x pipe holder 3g each
top plate 23g
= 293g Filament (I used 80% infill)