A 83 key keyboard, Norwegian QWERTY/DVORAK ISO style. It's of course possible to use other languages, as the MX cherry switches will accept keycaps with whatever language you need. It uses 83 1N4148 diodes and three LED's for caps lock,scroll lock, and QWERTY/DVORAK. It also needs pin headers that accepts the pins from a Teensy++2.0

2x20 Pin Header (2mm pitch)

Through Hole straight pin header, 01x03, 2.54mm pitch, single row #connector #pinheader #tht

Through Hole straight pin header, 01x04, 2.54mm pitch, single row #connector #pinheader #tht

Through Hole straight pin header, 01x08, 2.54mm pitch, single row #connector #pinheader #tht

Through Hole straight 15 pin header, 01x10, 2.54mm pitch, single row #pinheader #tht #SimplifiedFootprint

Through Hole straight pin header, 01x10, 2.54mm pitch, single row #pinheader #tht #SimplifiedFootprint

Form of electrical connector

Through Hole straight pin header, 02x06, 2.54mm pitch, double row #pinheader #tht #simplifiedFootprint

A board to use any PWM output with a 3 pin header

Through hole straight pin header, 1x04, 4 pin, 4-pin, horizontal, angled, 2.54mm pitch, 6mm pin lenght single row

Seeed Studio XIAO nRF54L15 Board (Pin Header Removed, JST-PH Battery, Pushbutton Added)

Through Hole straight pin header, 01x07, 2.54mm pitch, single row #connector #pinheader #tht

Simple inline 2 pin header analog filter using common 603 sized components

Through Hole straight pin header, 02x06, 2.54mm pitch, double row #pinheader #tht #simplifiedFootprint

Through hole straight pin header, 1x02, 2 pin, 2-pin, vertical, 2.54mm pitch, 6mm pin lenght single row

Through hole straight pin header, 1x04, 4 pin, 4-pin, horizontal, angled, 2.54mm pitch, 6mm pin lenght single row

This is a USB type C female header to 6 pin pinout for SPI protocol. Do not use this for USB protocol. This is meant to be used with Scale Snap 3D to reduce RF noise across (max) 1 meter distance.

Interface board connecting a 64-pin TE CMC connector 2209129-1 to a 64-pin TE ribbon header 1-5102154-2 with straight-through pin mapping from pin 1 to pin 64.

Datasheet-driven MFRC522 RFID reader PCB intended to replicate RC522 module behavior at 13.56 MHz with a 3.3 V nominal supply, 2.5 V to 3.3 V operating range, and RC522-style 8-pin host header compatibility. The MFRC522 datasheet is the authoritative source for pin usage, power rail relationships, oscillator requirements, reset/IRQ handling, and antenna interface topology. AVDD, DVDD, and TVDD must be tied to the same 3.3 V rail; PVDD must be equal to or lower than DVDD; unused MFIN must be tied to SVDD or PVSS; SVDD must be tied to a valid supply if not used independently. The design must use a 27.12 MHz crystal meeting CL 10 pF and ESR <= 100 ohms, local 100 nF decoupling on each MFRC522 supply grouping plus bulk capacitance, and an RF front-end based on the MFRC522 application diagram and reference reader matching/tuning network. PCB priorities are short crystal and RF connections, compact placement of decoupling capacitors at supply pins, solid ground reference, and protected antenna region with minimal digital routing through the RF area.

This project is a reference design for the BHI160B sensor featuring an I2C interface with QWIIC and pin headers. The design includes decoupling capacitors and pull-up resistors for signal integrity. It's powered by a 3.3V supply. #referenceDesign #project #sensor #accelerometer #BHI160B #referenceDesign #imu #stm #template #reference-design

This project is a reference design for the BHI160B sensor featuring an I2C interface with QWIIC and pin headers. The design includes decoupling capacitors and pull-up resistors for signal integrity. It's powered by a 3.3V supply. #referenceDesign #project #sensor #accelerometer #BHI160B #referenceDesign #imu #stm #template #reference-design

Carrier board schematic for network-audio-sink v1.0 using plug-in dev board modules via pin headers plus selected on-board ICs. Initial net plan includes 5V_BUS, 3V3, GND, I2S0/I2S1 audio, SPI control, and Ethernet differential-pair nets.

Pin Headers KH-2PH90-1X12P-L10.5 HDR-TH_12P-P2.00-H-M-W7.2-N LCSC Part Number: C2938470 JLCPCB Part Class: Extended Part Manufactured by kinghelm(金航标)

SmartDeskPet v1.0 Shield Stage 1 status: - Goal: 5V input -> dual AMS1117-3.3 rails (+3V3_MCU and +3V3_WIFI) with common GND. - Note: Keep power nets explicitly named (avoid unnamed nets) to keep ERC happy. Stage 1 completion checklist: - Mark J1 Pin_1 (+5V) as a Power Output pin to satisfy ERC power-driver checks. - Verify all GND symbols/returns are on the same GND net. - Keep +5V_SERVO isolated from the main +5V net (only share GND). Stage 2 preparation notes (MPN/LCSC + layout constraints): - MPN/LCSC targets to define before Stage 2 exit: - AMS1117-3.3 (SOT-223): set exact MPN and (optionally) LCSC PN for both U1 and U2. - 100nF capacitor (0603): set MPN/LCSC for all 0603 100nF decouplers. - 4.7k resistor (0603): set MPN/LCSC for I2C pull-ups R1 and R2. - 1000uF bulk capacitor (radial): set MPN/LCSC for C7 (CP_Radial_D10.0mm_P5.00mm). - DC005 power jack/regulator input: select exact DC005 footprint + MPN/LCSC (if used). - 2.54mm headers/sockets: set MPN/LCSC for H1, H2, J1, J3, J4, J5, P3, P4, P5, and J2. - ESP-01S antenna keepout: - Reserve a copper keepout under and in front of the ESP-01S onboard antenna. - No copper pours/traces/components in the antenna region (top and bottom) per module guidelines. - H1/H2 header spacing: - Maintain 1000 mil spacing between H1 and H2 header centerlines (shield mechanical requirement). - Silkscreen placeholders: - Add silkscreen labels for: 5V IN, GND, +3V3_MCU, +3V3_WIFI, SERVO1, SERVO2, I2C SDA/SCL, DHT11, ASRPRO UART2, ESP-01S UART3. - Add placeholder text for: MPN, LCSC, board revision, and date code. Stage 3 layout constraints (placement and routing guidance): - Connector placement strategy: - Place H1 and H2 first to lock the shield mechanical interface; enforce 1000 mil spacing. - Place J1 and any DC005 input at the board edge for easy access. - Designated power area planning: - Group U1, U2, and C7 near the 5V entry point; keep high-current 5V and regulator loops short. - Use wide copper for +5V and any servo supply; stitch GND around power section. - Antenna keepout boundaries: - Place J2 (ESP-01S socket) at a board edge with the antenna facing outward. - Enforce a top-and-bottom copper keepout in the antenna region; keep noisy power traces away.