2 layers165 × 110 mm
2 layers86.9 × 63.7 mm
TTS Design
100-5x/Bullseye-Target-SystemThe Bullseye Turning Target System was developed for the practical precision pistol shooter. This system compliments Tom Talpey's excellent Bullseye Match app for your phone.
- Size
- 86.9 × 63.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 43
- Pads
- 90
- Tracks, vias
- 213, 17
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Apr 2022
- Updated
- 15 Jun 2026
Overview
TTS Design is an open-source printed circuit board by 100-5x, from the 100-5x/Bullseye-Target-System repository on GitHub. It is a 2-layer board of 86.9 × 63.7 mm with 22 parts on 43 nets, routed with 213 tracks and 17 vias.
It is built around the ESP32-DEVKITC-VE and IRLZ44N. Its parts include 4 resistors, 4 connectors, 2 capacitors, 2 ICs and 2 switches. It belongs with the ESP32 boards of this library.
Main components
2README
README.mdBullseye Turning Target System
The Bullseye Turning Target System was developed for the practical precision pistol shooter. This system compliments Tom Talpey's excellent Bullseye Match app for your phone. Download the app through the App store of your choice or The Bullseye App website.
Each system can completely built on your own (DIY). It can optionally be purchased and contains a fully soldered circuit board with mounting hardware, including 8 metal screws and 4 plastic mounting standoffs. For reference on what a fully built turning target system looks like, see the Stepper Motor pic below. Additional items that can be utilized within the turning target system include Solenoid (AC/DC) for pneumatic turning and linear actuator.
Programmable options for your target turning system include:
- A DC passthrough output +/- (used for a pneumatic solenoid)
- Using a Stepper Motor (buy on Amazon for approx $20)
- Upgrading "Portable Target Systems" (from Minnesota) which will cost $125 for the total system. This integrates the Bullseye App with the Bullseye Turning Target System to make your existing investment wireless.
- Completing an AC power circuit (relay), which is used for a pneumatic solenoid, linear actuator, etc
- Enabling an external realy module.
See the Wiki for more details!
Email me at: smdial@icloud.com
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 2 | R_Potentiometer_Trim_US | Potentiometer_THT:Potentiometer_Bourns_3339P_Vertical | RV1, RV2 |
| 2 | SW_DPDT_x2 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | SW1, SW2 |
| 2 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J1, J2 |
| 1 | 10kΩ | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 220Ω | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 330Ω | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | C_Polarized_Small_US | Capacitor_THT:CP_Radial_D8.0mm_P3.80mm | C1 |
| 1 | C_Small | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C2 |
| 1 | ESP32-DevKitC | ESP32:ESP32-DevKitC | U1 |
| 1 | Generic_5v_Module | DC CUSTOM:DCDC_Generic-5v | U2 |
| 1 | IRLZ44N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
| 1 | Screw_Terminal_01x03 | TerminalBlock:TerminalBlock_bornier-3_P5.08mm | J5 |
| 1 | Screw_Terminal_01x04 | TerminalBlock:TerminalBlock_bornier-4_P5.08mm | J3 |
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Questions
How big is the TTS Design PCB?
It measures 86.9 × 63.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TTS Design use?
22 parts, built around the ESP32-DEVKITC-VE and IRLZ44N. 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 TTS Design KiCad files?
From the 100-5x/Bullseye-Target-System repository on GitHub, at the commit this page was made from: the board is PCB Design/TTS Design.kicad_pcb and its schematic PCB Design/TTS Design.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TTS Design design in my own project?
Its repository states no licence, so its author keeps all rights: ask 100-5x before reusing the design.