2 layers28.3 × 10.3 mm
Tap Photosensor PCB
VoronDesign/Voron-Tap
Tap is a nozzle-based z-probe for the V2 and Trident printer designs. The entire toolhead moves to trigger an optical switch. Tap offers many advantages:
12 parts716GPL-3.0
2 layers28.3 × 14.3 mm
Tap Photosensor PCB
VoronDesign/Voron-Tap716Tap is a nozzle-based z-probe for the V2 and Trident printer designs. The entire toolhead moves to trigger an optical switch. Tap offers many advantages:
- Size
- 28.3 × 14.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 14
- Pads
- 45
- Tracks, vias
- 99, 14
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 21 Sep 2022
- Updated
- 4 Aug 2024
Overview
Tap Photosensor PCB is an open-source printed circuit board by VoronDesign, from the VoronDesign/Voron-Tap repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 28.3 × 14.3 mm with 18 parts on 14 nets, routed with 99 tracks and 14 vias.
It is built around the AP63205WU, OPB961N51 and XL-1615RGBC-RF. Its parts include 5 capacitors, 2 resistors, 2 ICs, 2 diodes and 1 connector.
Main components
3
AP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC ConvertersOPB961N51
插件-40℃~+70℃ 1.7V 3.18mm 4.5V~16V 400mV 70ns 70ns 插件 Photointerrupters - Slot Type - Logic Output ROHSOPTEKPhotointerrupters - Slot Type - Logic Output
XL-1615RGBC-RF
SMD-4P,1.6x1.5mm-30℃~+85℃ 0.6mm 1.5mm 1.6mm 120° B:460nm~470nm、R:620nm~625nm、G:515nm~530nm Common Anode R:1.8V~2.4V、G:2.6V~3.4V、B:2.6V~3.4V R:100mcd~180mcd、G:350mcd~800mcd、B:120mcd~180mcd R:2000V、G:2000V、B:2000V R:20mA、G:20mA、B:20mA R:50mW、G:70mW、B:70mW R:625nm、B:465nm、G:515nm Top-mount Water Clear SMD-4P,1.6x1.5mm RGB LEDs ROHSXINGLIGHTRGB LEDs
README
README.mdVoron Tap
Animated image courtesy of Maple Leaf Makers , see the whole video at https://www.youtube.com/watch?v=mz5qcOZgXhI
Tap is a nozzle-based z-probe for the V2 and Trident printer designs. The entire toolhead moves to trigger an optical switch. Tap offers many advantages:
- Extreme precision 0.4μm (0.0004mm)
- Any build surface and easily change at will
- Durability via optical sensor (millions of probe cycles)
- High temperature reliability (70C to 100C)
- Simplified probe mechanics (no dock/undock macros)
- No separate Z-endstop required
- Crash protection
Requirements
- Bed must be stable for probing force of 500-800 grams
- Switchwire, V1.8, Legacy, V0 beds are NOT rigid enough
- Mounts to MGN-12H X-axis
- Front mounted extruder (Clockwork2, LGX, Galileo)
- Accuracy depends on good mechanical condition
- Must have 5V at toolhead or special 24V sensor PCB
Instructions
Comprehensive assembly details are available in the Manual
Post-Install Setup
- Update your
printer.cfgas recommended in Tap Klipper Instructions - Home Z and test virtual Z endstop by lifting tool-head
- Heat soak your machine and run a couple
probe_accuracy samples=100to "break-in" your probe - Run a few more
probe_accuracychecks (default of 10 probes)
For well-built machines you can expect to see between 0.0000 and 0.0008 standard deviation.
FAQs
- Will Tap hurt my print surface? No, probing temp is restricted to 150C. The team recommends spray coated spring steel. Users of smooth PEI may find minor burnish marks if continously probing the same spot.
- Will the hartk 2-piece PCB work with Tap? Yes, but it requires a slight modification. See discord pin.
- Can I use an optical sensor not specified in the BOM? Not recommended, the team spent considerable time validating sensors in BOM.
- Can I use micro-switch instead? Not recommended, but check here for more details: Unklicky Tap
- Can I use Tap with kinematic bed mounts? Yes, if your bed is rigid up to 800 grams of force.
- Doesn't this add a lot of weight? The team explored many designs and landed on ~50 extra grams as good trade-off between rigidity and weight.
- Why do I need this if my induction probe works fine? Tap enables a far better user experience as it eliminates most baby-stepping needed due to thermal expansion, nozzle & bed surface changes.
- Is Tap noticably more accurate than klicky? Yes.
(Bonus Points) Data Science
Tap engineering is backed by data science. If you want to dive deeper check out the following resources:
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 22 µF | Capacitor_SMD:C_0603_1608Metric | C3, C5 |
| 1 | 10 µF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 100 nF | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 200R | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 4.7 uH | Inductor_SMD:CKCS3010 | L1 |
| 1 | 620R | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 68 nF | Capacitor_SMD:C_0402_1005Metric | C4 |
| 1 | AP63205WU | Package_TO_SOT_SMD:TSOT-26 | U2 |
| 1 | Conn_01x03 | Connector_JST:JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal | J1 |
| 1 | D_Schottky | Diode_SMD:D_SOD-323 | D3 |
| 1 | OPB961N51 | footprints:OPTO_EE-SX398_OPB666N | U1 |
| 1 | Polyfuse_Small | Resistor_SMD:R_0805_2012Metric | F1 |
| 1 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_DARKMODE | JP2 |
| 1 | SolderJumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm_NumberLabels | JP1 |
| 1 | XL-1615RGBC | LED_SMD:LED_0606_1432 | D1 |
The 16 most common of 18 parts.
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Questions
How big is the Tap Photosensor PCB PCB?
It measures 28.3 × 14.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tap Photosensor PCB use?
18 parts, built around the AP63205WU, OPB961N51 and XL-1615RGBC-RF. 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 Tap Photosensor PCB KiCad files?
From the VoronDesign/Voron-Tap repository on GitHub, at the commit this page was made from: the board is OptoTap/Tap_Photosensor_PCB_v2/Tap_Photosensor_PCB.kicad_pcb and its schematic OptoTap/Tap_Photosensor_PCB_v1/Tap_Photosensor_PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tap Photosensor PCB 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).