josh-lambda/fencing-tester3Fencing Tester is a tool for testing and analysing basic fencing equipment. It is intended for situations where you may not have access to a full piste setup to test equipment during repair or when you are tired of…
Logic testing is an open-source printed circuit board by josh-lambda, from the josh-lambda/fencing-tester repository on GitHub. It is a 2-layer board of 79 × 78.3 mm with 58 parts on 67 nets, routed with 453 tracks and 110 vias.
It is built around the AMS1117-3.3, ESP32-C6-WROOM-1U-N8 and BC547. Its parts include 16 resistors, 9 switches, 7 connectors, 5 capacitors and 5 diodes. It belongs with the ESP32 and RISC-V boards of this library.
Fencing Tester is a tool for testing and analysing basic fencing equipment. It is intended for situations where you may not have access to a full piste setup to test equipment during repair or when you are tired of manually jabbing a weapon button a hundred times while trying to find which part of a reel/cable set decided to break this time.
It aims to provide basic troubleshooting functionality including:
I created this project due to an interest in the electrical signaling protocols used in fencing, and fascination with the reliable and intricate mechanisms that make modern blades work. This spiraled into creating a multi-function testing device with signal generation, weapon readout, and wire checking for fun.
See BOM.csv for full details
| CATEGORY | ITEM | QUANTITY |
|---|---|---|
| COMPONENTS | G6K-2P-Y 5V | 6 |
| 1N4148 | 5 | |
| BC547 | 6 | |
| 10uF Capacitors | 2 | |
| 0.1uF/100nF | 2 | |
| 1nF Capacitors | 1 | |
| 10k Resistor | 6 | |
| 510 Resistor | 5 | |
| 1 Resistor | 3 | |
| 5.1k Resistor | 1 | |
| 1M Resistor | 1 | |
| Display 128x128 I2C | 1 | |
| AMS1117-3.3 | 1 | |
| Banana Plugs | 9 | |
| 3mm Plug | 1 | |
| USB-C Connector | 1 | |
| Pin Headers Female | 4 | |
| Push Button | 1 | |
| 2P Switch | 1 | |
| 3P Switch | 1 | |
| ESP32-C6-WROOM-1U | 1 | |
| HARDWARE | M4x20 Socket Head | 4 |
| M2x10 Socket head | 4 | |
| MATERIALS | PLA 1kg | 1 |
| 3mm Sheet | 1 |
| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k | Custom:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder_Text | R12, R13, R14, R15, R16, R17 |
| 6 | G6K-2 | Relay_SMD:Relay_DPDT_Omron_G6K-2F-Y | K1, K2, K3, K4, K5, K6 |
| 5 | 1N4148 | Diode_SMD:D_SOD-123 | D1, D2, D3, D4, D5 |
| 5 | 510 | Custom:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder_Text | R1, R2, R3, R6, R8 |
| 5 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2, Q3, Q4, Q5 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad_TopBottom | H1, H2, H3, H4 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopBottom | H5, H6, H7, H8 |
| 3 | 1Ω | Custom:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder_Text | R4, R5, R7 |
| 2 | 0.1 µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8, C9 |
| 2 | 10 µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7 |
| 1 | 1 nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 1M | Custom:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder_Text | R11 |
| 1 | 5.1k | Custom:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder_Text | R9 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223 | U2 |
| 1 | Aux Wire | Custom:Fencing Plug | J2 |
| 1 | Conn_01x04 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | ESP32-C6-WROOM-1U-N8 | Importer:ESP32C6WROOM1UN8 | IC1 |
| 1 | External Box | Custom:Fencing Plug | J1 |
| 1 | Lame Tab | Connector_Wire:SolderWire-0.5sqmm_1x01_D0.9mm_OD2.1mm | J4 |
| 1 | SW_DP3T | Button_Switch_SMD:SW_SP3T_PCM13 | SW2 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H13mm | SW3 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_CK_JS102011SAQN | SW1 |
| 1 | Small Pin | Connector_Wire:SolderWire-0.5sqmm_1x01_D0.9mm_OD2.1mm | J6 |
| 1 | SolderJumper_2_Closed | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | Test Output | Custom:Fencing Plug | J5 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4085 | P1 |
It measures 79 × 78.3 mm and has 2 copper layers, 1.6 mm thick.
58 parts, built around the AMS1117-3.3, ESP32-C6-WROOM-1U-N8 and BC547. 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.
From the josh-lambda/fencing-tester repository on GitHub, at the commit this page was made from: the board is PCB/Logic testing.kicad_pcb and its schematic PCB/Logic testing.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask josh-lambda before reusing the design.
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