Design Requests

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Displaying 11 - 20 of 20
Based around one of the ATMega chips from the UPL. Control a VGA screen at 800x600px, display standard ASCII characters. Allow the system to be communicated to by UART (or potentially I2C). This can essentially act as a "graphics card" for other ATMega projects. The idea could be expanded to an "Arduino game console"
Category: 
Audio Visual
A small desktop device that can convert various sound inputs (Be it MIDI, XLR, or a 6.5mm Plug) to a digital signal for interfacing with computer for things like editing in a Digital Audio Workstation such as "Audacity" Hopefully Studio/Audiophile Sound Quality. It should use USB type C or Thunderbolt 3 for computer connectivity. End product should be something like this: http://www.pssl.com/Behringer-UMC-404HD-192k-4-Ch-USB-Audio-Interface or this: https://www.bhphotovideo.com/c/product/1251655-REG/focusrite_scarlett_2i2_2nd_gen_scarlett_2i2_usb_audio.html
Category: 
Sound & Music
A constant current source capable of outputting a consistent current. Have all power entry and exit broken out through terminal blocks.
Category: 
Power Electronics
Using noise on an ADC pin, incrementing some algorithm, create a random number generator that is addressable via I2C. This can likely be done with an ATTINY85-20PU (UPL 9.001) and an antenna trace. Break out via header pins.
Category: 
Sub Circuits
Using a Wein Bridge oscillator, generate a buffered adjustable sine wave output.
Category: 
Uncategorized
Equivalent of https://www.harborfreight.com/90-amp-flux-welder-61849.html - for light duty MIG Welder applications. Though this is called MIG becuase it has a spool and gun - this does not have shielding gas but only flux core wire.
Category: 
Power Electronics
Using a 555 timer (UPL 7.001), generate a square wave who's frequency is determined by a capacitance placed across two terminals. This can be used for capacitive sensing applications.
Category: 
Sensors
- Should resemble what is called a "Fully Modular Power Supply" Meaning no cords are permanently attached - AC or DC Power In - Around 500W level Here is the OSE Page: http://opensourceecology.org/wiki/Open_Source_PC_Power_Supply_Unit
Category: 
Power Electronics
Create a 1 bit alu slice, capable of: Increment, Decrement, Shift Up, Shift Down, And, Or, NAND. Use UPL digital logic chips.
Category: 
Digital Logic
A probe + control system that allows one to present cut-in and cut-out temperature for a water circulation system. Could be Arduino-based to make it part of a larger automation system with multiple probes and control solenoids. The application is hydronic heating hot water circulation from an open source hydronic stove with a pipe-based heat exchanger. NPT pipe connections are used for the probe insertion point, or the probe can go on the outside of a pipe so it's non-invasive. See current sytem design at http://opensourceecology.org/wiki/Open_Source_Hydronic_Stove
Category: 
Automation

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