4 layers91 × 53.1 mm
Nff pcb
o7-machinehum/flipper-blackhat
Linux based WiFi pentesting device for the Flipper Zero.
184 parts300
2 layers50 × 50 mm
Kch ha
kit-kch/ha-pcbPCB realizing various kinds of adders using NAND gates
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 50
- Pads
- 166
- Tracks, vias
- 417, 34
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 May 2025
- Updated
- 8 May 2025
Overview
Kch ha is an open-source printed circuit board by kit-kch, from the kit-kch/ha-pcb repository on GitHub, published under the MIT licence. It is a 2-layer board of 50 × 50 mm with 54 parts on 50 nets, routed with 417 tracks and 34 vias.
It is built around the 74HC00D, BSS84P and LTST-C170TBKT, with the BSS138, LTST-C170KRKT and 2016L050MR among its other parts. Its parts include 16 resistors, 10 transistors, 9 diodes, 5 connectors and 3 capacitors.
Main components
11
74HC00D
SOP-14-40℃~+125℃ 1.5V、3.15V、4.2V 1.9V、3.7V、5.9V 100mV、400mV、400mV 2 2V~6V 4 40uA 5.2mA 5.2mA 500mV~1.8V 74HC Series 7ns@6V,50pF NAND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
BSS84P
SOT23-3-60V, -170mA, P-Channel SIPMOS Small-Signal TransistorInfineon TechnologiesUncategorised
LTST-C170TBKT
0805-20℃~+80℃ 104mcd 130° 20mA 3.3V 465nm~475nm 468nm 76mW Blue Discrete Diode Water Clear 0805 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsLTST-C170KRKT
0805-55℃~+85℃ 130° 20mA 2V 54mcd 631nm 639nm 75mW Discrete Diode Red Water Clear 0805 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
2016L050MR
2016-40℃~+85℃ 1.1A 1.4W 1Ω 200mΩ 20A 550mA 5s 60V 2016 Resettable Fuses ROHSLittelfuseResettable Fuses
PH1RB-03-UA
弯插,P=2.54mm-40℃~+105℃ 1 1x3P 2.54mm 2.5mm 250V 3.05mm 3A 3P 5.97mm Black Brass Gold Pin Header Right Angle 弯插,P=2.54mm Pin Headers ROHSADAM TECHPin HeadersPPTC101LGBN-RC
弯插,P=2.54mm-40℃~+105℃ 1 10P 2.54mm 2.54mm 250V 3A Right Angle Tin 弯插,P=2.54mm Female Headers ROHSSullins Connector SolutionsFemale Headers
USB4110-GF-A
SMD-40℃~+85℃ 1 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB ConnectorsPPTC031LGBN-RC
弯插,P=2.54mm-40℃~+105℃ 1 2.54mm 2.54mm 250V 3A 3P Right Angle Tin 弯插,P=2.54mm Female Headers ROHSSullins Connector SolutionsFemale HeadersPH1RB-10-UA
弯插,P=2.54mmPin HeadersADAM TECH
README
README.mdKCH Half Adder PCB
This repository contains schematic, layout and BOM for the KCH half adder PCB. The PCB realizes a half adder using NAND gates, where some of the on-board components are left to be soldered by students as an exercise.
Multiple PCBs can be connected to each other to form full adders or multi-bit carry ripple adders. In addition to the PCB, we provide detailed documentation explaining the theory involved for both the PCB design and the digital circuit realization.
As the intended target audience is school students and their teachers, documentation is currently only available in German.
Ordering the PCBs
The initial batch of boards we have successfully used in a workshop has been ordered using JLCPCB's standard assembly service. We had all the parts assembled, except for the switches and the 74HC00 ICs that are marked as do-not-place in the schematic. Because of that, both-sided assembly and THT assembly is required. The files we used to order from JLCPCB can be found in the production folder.
Please note: As the connectors are overlapping, the assembly service needs to add some spacers when paneling the design. Either panel yourself or let the factory know about this requirement.
Please also note that the boards should align when connected together. PCB edges therefore need to be smooth so mouse bites should not be used. Make sure to use v-score / v-cut panels instead.
More Information and Documentation
- Project Website and Documentation: kch.dev/ha
- Project Schematic: kch_ha.pdf
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 680 | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8 |
| 6 | BSS84 | Package_TO_SOT_SMD:SOT-23 | Q1, Q3, Q5, Q7, Q9, Q10 |
| 4 | 22k | Resistor_SMD:R_0805_2012Metric | R9, R11, R12, R13 |
| 4 | BLAU | LED_SMD:LED_0805_2012Metric | D1, D3, D5, D7 |
| 4 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q2, Q4, Q6, Q8 |
| 4 | ROT | LED_SMD:LED_0805_2012Metric | D2, D4, D6, D8 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | 220 | Resistor_SMD:R_0805_2012Metric | R10, R17 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R14, R15 |
| 2 | 74HC00 | Package_DIP:DIP-14_W7.62mm | U1, U2 |
| 1 | 1.1A | snapeda:FUSER_2016L050MR | F1 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | LINKS | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | J4 |
| 1 | LOGO | snapeda:kit_4mm | G*** |
| 1 | LOGO | snapeda:kch_4mm | G*** |
| 1 | LOGO | snapeda:kch_url_qr | G*** |
| 1 | LOGO | snapeda:itiv_4mm | G*** |
| 1 | OBEN | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Horizontal | J2 |
| 1 | POWER | snapeda:GCT_USB4110-GF-A_REVB | J1 |
| 1 | RECHTS | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Horizontal | J5 |
| 1 | UNTEN | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Horizontal | J3 |
| 1 | a | Button_Switch_THT:SW_Slide-03_Wuerth-WS-SLTV_10x2.5x6.4_P2.54mm | SW1 |
| 1 | b | Button_Switch_THT:SW_Slide-03_Wuerth-WS-SLTV_10x2.5x6.4_P2.54mm | SW2 |
| 1 | ~ | Diode_SMD:D_SMA | D9 |
The 52 most common of 54 parts.
Questions
How big is the Kch ha PCB?
It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kch ha use?
54 parts, built around the 74HC00D, BSS84P, LTST-C170TBKT and BSS138. 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 Kch ha KiCad files?
From the kit-kch/ha-pcb repository on GitHub, at the commit this page was made from: the board is kch_ha.kicad_pcb and its schematic kch_ha.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kch ha design in my own project?
Its repository publishes it under the MIT 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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