2 layers83.3 × 65.3 mm
SimonShield
github-linguist/linguist
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46 parts14kMIT
2 layers60 × 50 mm
Hc solder
pybash1/hc-solderA PCB I made for Hack Club's Solder program!
- Size
- 60 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 6
- Pads
- 14
- Tracks, vias
- 39, 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 May 2025
- Updated
- 3 May 2025
Overview
Hc solder is an open-source printed circuit board by pybash1, from the pybash1/hc-solder repository on GitHub. It is a 2-layer board of 60 × 50 mm with 10 parts on 6 nets, routed with 39 tracks and 1 via.
It is built around the BC547. Its parts include 2 resistors, 1 diode and 1 transistor.
Main components
1README
README.mdhc-solder
This is a mini touch sensor circuit using a simple NPN transistor. The circuit uses the human body's electrical resistance to complete the circuit, the small voltage from the body(when we touch the exposed pads) goes to the base of the transistor which then lets the current from the 9V battery pass onto the LED via the transistor.
By @pybash on Slack
Schematic
PCB
3D View
Real circuit
BOM
- 1 Battery holder
- 1 9V Battery
- 2 220ohm resistor
- 1 NPN transistor
- 1 Red LED
- 2 Mounting hold pads
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | LOGO | LOGO | G***, G***, G*** |
| 2 | MountingHole_Pad | MountingHole:MountingHole_5.5mm_Pad | H1, H2 |
| 2 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 1 | BC547 | Package_TO_SOT_THT:TO-92L_HandSolder | Q1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | LED | LED_THT:LED_D5.0mm | D1 |
Questions
How big is the Hc solder PCB?
It measures 60 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hc solder use?
10 parts, built around the 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.
Where can I download the Hc solder KiCad files?
From the pybash1/hc-solder repository on GitHub, at the commit this page was made from: the board is src/hc_solder.kicad_pcb and its schematic src/hc_solder.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hc solder design in my own project?
Its repository states no licence, so its author keeps all rights: ask pybash1 before reusing the design.
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