Shared Projects

100V 30A. For Testing heating of MOSFETS and how well heatsinks work during 30A draw through two GT010N10TL N Chan 100V MOSFETS in reverse series. Using about 1k gate resistors to reduce ringing and prevent shut off spike.

Description: This project is a low fuel warning module, designed to replace part of the function of an unobtainable industrial process controller used in the fuel system of the ViperJet Experimental-Amateur Built aircraft. It monitors the output of an optical liquid level sensor in the main fuel tank. If that sensor indicates low fuel for 20 seconds, this module pulls its EFIS_ALM output low and flashes a panel-mounted warning LED at 1.5Hz.

This project is intended for use in Experimental category aircraft only. Do NOT install it in a CAR Part 3 or FAR Part 23 certificated aircraft without FAA Field Approval.

BOM: Click here for a DigiKey saved list with the board components, and click here for a DigiKey saved list with some optional parts.

Download: Click here for a .ZIP archive containing full documentation in PDF format, DipTrace v5.2.0.4. CAD files and RS-274X Gerber files.

Optocoupler PCB for use with either an SPST switch or a switching S-Video jack in conjunction with the CD4053 switch PCB for S-Video modding a Sony P-3A chassis CRT TV.

Bill of Materials:

• C1: 0.01uF 50V 0805 SMD Ceramic Capacitor
• J1: 3-pin 2.50mm pitch JST Connector
• J2 and J4: 2-pin 2.50mm pitch JST Connectors
• J3: 2-pin 2.54mm pitch DuPont Header
• R1: 10K ohm 1/4W 0805 SMD Resistor
• R2: 1.5K ohm 1/4W 0805 SMD Resistor
• R3: 100K ohm 1/4W 0805 SMD Resistor
• U1: PC817 4-DIP Package Optocoupler IC

S-Video switch for Sony P-3A chassis TVs, designed to simplify S-Video mods for these sets by using either an SPST switch or a switching S-Video jack. Based on the schematic for the K board from a Sony KV-27TS30. This board is designed to replace the CX20061 video switching IC on these TVs.

Bill-of-Materials:

• C1 and C8: 0.01uF 50V 0805 SMD Ceramic Capacitors
• C2: 1000pF 50V 0805 SMD Ceramic Capacitor
• C4, C5, C6, and C7: 10uF 16V+ 0805 SMD Ceramic Capacitors
• C9: 10uF 16V+ Electrolytic Capacitor
• D1 and D2: 1n4148W SOD123 Package SMD Diodes
• J1: 2-pin 2.50mm pitch JST connector
• J2: 3-pin 2.50mm pitch JST connector
• J3: 8-pin 2.54mm pitch DuPont header (Pins 2 and 8 can be keyed off, as they’re not connected.)
• J4: 3-pin 2.50mm pitch JST connector (Transplant connector A-4 from the TV chassis to this footprint.)
• J5 and J6: 4-pin 2.50mm pitch JST connectors
• Q1, Q2, Q3, Q4, Q7, Q8, Q9, Q10, and Q11: 2SC1623 NPN SOT-23 Package SMD Transistors
• Q5 and Q6: DDTC144ECA NPN Pre-Biased SOT-23 Package SMD Transistors
• R1, R3, R5, R7, R11, R19, and R21: 100K ohm 1/4W 0805 SMD Resistors
• R2, R4, R6, R8, R12, and R20: 100 ohm 1/4W 0805 SMD Resistors
• R9, R10, and R17: 10K ohm 1/4W 0805 SMD Resistors
• R13: 2.2K ohm 1/4W 0805 SMD Resistor
• R14, R15, R16, and R18: 1K ohm 1/4W 0805 SMD Resistors
• R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, and R33: 15K ohm 1/4W 0805 SMD Resistors
• U1: CD4053B SOIC-16 Package Switch IC

This is v1.8 of the OSSEM ECU capstone project

A microcontroller board, based on an ATtiny814, that can accommodate a range of different Adafruit and AliExpress colour TFT displays.

See http://www.technoblogy.com/show?5O3E.

OPEN SOURCE / NOT FOR PROFIT / FOR NON-COMMERCIAL D.I.Y. PURPOSES ONLY!!! Build docs and all info here: https://docs.google.com/document/d/1FS0KaR-OHO-RjKvFlTQ33LGtHSqZfUb7XBg1HyFi3c8/edit?usp=sharing

OPEN SOURCE / NOT FOR PROFIT / FOR NON-COMMERCIAL D.I.Y. PURPOSES ONLY!!! Build docs and all info here: https://docs.google.com/document/d/1XnkTOWzyiUlqTK5zi7hqMG6uh5VdrVWrgBty6MUNhkE/edit?usp=drive_link

Carrier board for Adafruit ESP32 Huzzah Breakout Board and ADXL343 IMU.