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4 layers42 × 45 mmBlinder, the printed circuit board in 3D

Blinder

nophead/Blinder9

Tasmota roller blind open / close mechanism

Open in PCBKitView on GitHub.kicad_pcb
Size
42 × 45 mm
Copper layers
4
Thickness
1.6 mm
Parts
25
Nets
33
Pads
90
Tracks, vias
192, 12
Pours
2
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
4 Dec 2023
Updated
29 Dec 2023

Overview

Blinder is an open-source printed circuit board by nophead, from the nophead/Blinder repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 42 × 45 mm with 25 parts on 33 nets, routed with 192 tracks and 12 vias.

It is built around the ESP-12F and L6203. Its parts include 8 resistors, 5 capacitors, 5 connectors, 3 ICs and 2 switches. It belongs with the home automation and IoT boards and the ESP8266 boards of this library.

Main components

2

README

readme.md

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Blinder

Tasmota roller blind open / close mechanism

Main Assembly

Table of Contents

  1. Parts list
  2. Pulley Assembly
  3. Switch Slide Assembly
  4. Rod Assembly
  5. Retainer Assembly
  6. Idler Assembly
  7. Base Assembly
  8. Motor Assembly
  9. Bracket Assembly
  10. Blinder PCB Assembly
  11. Cover Assembly
  12. Main Assembly

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Parts list

Switch SlideRodBaseMotorBracketBlinder PCBCoverMainTOTALS
Vitamins
  .   .   2   .   .   .   .   .   2    Ball bearing 686ZZ 6mm x 13mm x 5mm
  .   .   .   .   .   1   .   .   1    ESP-12F ESP8266 WiFi module
  2   .   2   .   .   .   .   .   4    Heatfit insert M2 x 4mm
  .   .   10   1   .   .   .   .   11    Heatfit insert M3 x 3mm
  .   .   .   .   .   1   .   .   1    JST PH connector 2 way
  .   .   .   .   .   2   .   .   2    JST PH connector 3 way
  .   .   .   .   .   1   .   .   1    LED 3 mm green
  .   .   .   .   .   1   .   .   1    MULTIWATT11 L6203
  1   .   1   .   .   .   .   .   2    Microswitch DM1-00P-110-3
  .   .   .   .   .   1   .   .   1    Molex KK header 2 way
  .   .   .   .   .   1   .   .   1    Molex KK housing 2 way
  .   .   .   .   .   .   1   .   1    Nut M3 x 2.4mm nyloc
  .   .   1   .   .   .   .   .   1    Nut M8 x 6.5mm brass
  .   .   .   .   .   1   .   .   1    PCB Blinder
  .   .   .   .   .   2   .   .   2    SMD capacitor 0805 100n
  .   .   .   .   .   2   .   .   2    SMD capacitor 0805 15n
  .   .   .   .   .   1   .   .   1    SMD capacitor 0805 220n
  .   .   .   .   .   5   .   .   5    SMD resistor 0805 10K 0.125W
  .   .   .   .   .   2   .   .   2    SMD resistor 0805 1K 0.125W
  .   .   .   .   .   1   .   .   1    SMD resistor 0805 2K2 0.125W
  2   .   2   .   .   .   .   .   4    Screw M2 cap x 10mm
  .   .   1   .   .   .   .   .   1    Screw M3 cap x 5mm
  .   .   .   .   3   .   .   .   3    Screw M3 cap x 8mm
  .   .   .   .   .   .   .   4   4    Screw M3 cs cap x 5mm
  .   .   .   .   .   .   1   .   1    Screw M3 cs cap x 12mm
  .   .   .   6   .   .   .   .   6    Screw M3 dome x 12mm
  .   .   2   1   .   .   .   .   3    Screw M3 grub x 5mm
  .   .   .   .   3   .   .   .   3    Screw No8 pan wood x 30mm
  .   .   .   .   .   2   .   .   2    Square button 6mm
  .   1   .   .   .   .   .   .   1    Threaded rod M8 x 79mm - not shown
  .   .   .   .   .   1   .   .   1    Ultra Small 3A buck regulator
  2   .   2   .   .   .   .   .   4    Washer M2 x 5mm x 0.3mm
  .   .   1   .   3   .   1   .   5    Washer M3 x 7mm x 0.5mm
  .   .   .   .   3   .   .   .   3    Washer M5 x 10mm x 1mm
  .   .   2   .   .   .   .   .   2    Washer spring M6 x 1.9mm
  2   .   2   .   .   .   .   .   4    Washer star M2 x 0.3mm
  .   .   1   .   .   .   .   .   1    Washer star M3 x 0.5mm
  9   1   29   8   12   25   3   4   91   Total vitamins count
3D printed parts
  .   .   1   .   .   .   .   .   1   base.stl
  .   .   .   .   1   .   .   .   1   bracket.stl
  .   .   .   .   .   .   1   .   1   cover.stl
  .   .   1   .   .   .   .   .   1   idler.stl
  .   .   .   1   .   .   .   .   1   pulley.stl
  .   .   1   .   .   .   .   .   1   retainer.stl
  1   .   .   .   .   .   .   .   1   switch_slide.stl
  1   .   3   1   1   .   1   .   7   Total 3D printed parts count

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[blocked]

Pulley Assembly

Vitamins

QtyDescription
1Heatfit insert M3 x 3mm
1Screw M3 grub x 5mm

3D Printed parts

1 x pulley.stl
pulley.stl

Assembly instructions

pulley_assembly

  1. Fit the heatfit insert
  2. Add the grub screw

pulley_assembled

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[blocked]

Switch Slide Assembly

Vitamins

QtyDescription
2Heatfit insert M2 x 4mm
1Microswitch DM1-00P-110-3
2Screw M2 cap x 10mm
2Washer M2 x 5mm x 0.3mm
2Washer star M2 x 0.3mm

3D Printed parts

1 x switch_slide.stl
switch_slide.stl

Assembly instructions

switch_slide_assembly

  1. Fit the heatfit inserts into the slide.
  2. Screw the microswitch to the slide using 10mm M2 cap screws spring washers and plain washers.
  3. Solder two wires to the outer pins.

switch_slide_assembled

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[blocked]

Rod Assembly

Vitamins

QtyDescription
1Threaded rod M8 x 79mm - not shown

Assembly instructions

rod_assembly

  • Turn down the ends of the studding to 5.96mm to fit through the bearings.

rod_assembled

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[blocked]

Retainer Assembly

Vitamins

QtyDescription
1Heatfit insert M3 x 3mm
1Screw M3 grub x 5mm

3D Printed parts

1 x retainer.stl
retainer.stl

Assembly instructions

retainer_assembly

  1. Fit the heatfit insert
  2. Add the grub screw

retainer_assembled

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[blocked]

Idler Assembly

Vitamins

QtyDescription
1Heatfit insert M3 x 3mm
1Screw M3 grub x 5mm

3D Printed parts

1 x idler.stl
idler.stl

Assembly instructions

idler_assembly

  1. Fit the heatfit insert
  2. Add the grub screw

idler_assembled

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[blocked]

Base Assembly

Vitamins

QtyDescription
2Ball bearing 686ZZ 6mm x 13mm x 5mm
2Heatfit insert M2 x 4mm
8Heatfit insert M3 x 3mm
1Microswitch DM1-00P-110-3
1Nut M8 x 6.5mm brass
2Screw M2 cap x 10mm
1Screw M3 cap x 5mm
2Washer M2 x 5mm x 0.3mm
1Washer M3 x 7mm x 0.5mm
2Washer spring M6 x 1.9mm
2Washer star M2 x 0.3mm
1Washer star M3 x 0.5mm

3D Printed parts

1 x base.stl
base.stl

Sub-assemblies

1 x idler_assembly1 x retainer_assembly1 x rod_assembly
idler_assembledretainer_assembledrod_assembled
1 x switch_slide_assembly
switch_slide_assembled

Assembly instructions

base_assembly

  1. Fit the 8 M3 inserts, 4 in the ribs, 3 in the base and 1 for the slide
  2. Fit two M2 inserts for the microswitch.
  3. Place the M8 nut in a central position and screw in the studding.
  4. Crush the M8 spring washers with pliers as they are used just as spacers.
  5. Fit the bearings and spring washers and secure in place with the pulley and retainer grub screws.
  6. Solder two wires to the outer pins of the microswitch and screw it in place.
  7. Screw the slide in place in the central position.

base_assembled

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[blocked]

Motor Assembly

Vitamins

QtyDescription
6Screw M3 dome x 12mm

Sub-assemblies

1 x base_assembly1 x pulley_assembly
base_assembledpulley_assembled

Assembly instructions

motor_assembly

  1. Introduce the motor and pulley trapping the ball chain between the pulley and the idler and then screw the motor in place.
  2. Solder wires to the motor.
  3. Crimp JST plugs to the motors and switch wires. Use the schematic to get the correct pins.

motor_assembled

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[blocked]

Bracket Assembly

Vitamins

QtyDescription
3Screw M3 cap x 8mm
3Screw No8 pan wood x 30mm
3Washer M3 x 7mm x 0.5mm
3Washer M5 x 10mm x 1mm

3D Printed parts

1 x bracket.stl
bracket.stl

Sub-assemblies

1 x motor_assembly
motor_assembled

Assembly instructions

bracket_assembly

  1. Screw the bracket to the bottom of the base using 3 8mm M3 cap screws and washers.
  2. Screw the bracket to the wall using rawl plugs, No8 screws and M5 washers.
  3. Slide it down to tension the ball chain before tightening the screws.
  4. Connect the PCB to the switches, motor and 12V power.
  5. While controlling the blind with the buttons: adjust the closed position by losening the idler pulley and rotating it on the shaft.
  6. Then set the open position by adjustinge the sliding microswitch.

bracket_assembled

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[blocked]

Blinder PCB Assembly

Vitamins

QtyDescription
1ESP-12F ESP8266 WiFi module
1JST PH connector 2 way
2JST PH connector 3 way
1LED 3 mm green
1MULTIWATT11 L6203
1Molex KK header 2 way
1Molex KK housing 2 way
1PCB Blinder
2SMD capacitor 0805 100n
2SMD capacitor 0805 15n
1SMD capacitor 0805 220n
5SMD resistor 0805 10K 0.125W
2SMD resistor 0805 1K 0.125W
1SMD resistor 0805 2K2 0.125W
2Square button 6mm
1Ultra Small 3A buck regulator

Assembly instructions

blinder_PCB_assembly

  1. Use a paste mask to apply solder paste to the SMD pads.
  2. Place the SMD parts on the solder.
  3. Use an oven or hotplate to reflow the solder.
  4. Alternatively the SMD parts and pads are big enough to hand solder.
  5. Hand solder the through hole connectors, switches, LED and L6203. The LED's flange should align with the board edge.
  6. Solder wires into the tink_buck converter, mount it on a double sided sticky pad and solder the wires to the PCB.
  7. Crop all the leads short on the underside of the board.

blinder_PCB_assembled

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[blocked]

Cover Assembly

Vitamins

QtyDescription
1Nut M3 x 2.4mm nyloc
1Screw M3 cs cap x 12mm
1Washer M3 x 7mm x 0.5mm

3D Printed parts

1 x cover.stl
cover.stl

Sub-assemblies

1 x blinder_PCB_assembly
blinder_PCB_assembled

Assembly instructions

cover_assembly

  1. Cut away the support material under the PCB spacer boss.
  2. Place the PCB into the large guide and level with the top of the small guide and then slide forwards.
  3. Secure with the screw, washer and nut.

cover_assembled

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[blocked]

Main Assembly

Vitamins

QtyDescription
4Screw M3 cs cap x 5mm

Sub-assemblies

1 x bracket_assembly1 x cover_assembly
bracket_assembledcover_assembled

Assembly instructions

main_assembly

  1. Place the 12V power cable in the slot in the base.
  2. Place the cover assembly over the base and secure with four screws.

main_assembled

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Parts

25
QtyValueFootprintReferences
510KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR1, R2, R3, R4, R5
2100nCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC1, C3
215nCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC4, C5
21KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR7, R8
1220nCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC2
12K2Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR6
13.3VNopHead:TinyBuckU1
1DOWNButton_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx39-2LFSSW2
1DOWN LIMITConnector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_VerticalJ3
1ESP-12FRF_Module:ESP-12EU2
1L6203L6203:MULTIWATT-11IC1
1MOTConnector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_VerticalJ5
1PGMConnector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJ2
1PWRConnector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_VerticalJ1
1UPButton_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx39-2LFSSW1
1UP LIMITConnector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_VerticalJ4
1greenLED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mmD1

The 24 most common of 25 parts.

Questions

How big is the Blinder PCB?

It measures 42 × 45 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Blinder use?

25 parts, built around the ESP-12F and L6203. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Blinder KiCad files?

From the nophead/Blinder repository on GitHub, at the commit this page was made from: the board is PCB/Blinder/Blinder.kicad_pcb and its schematic PCB/Blinder/Blinder.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Blinder design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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