I bought the actual two-way mirror three days ago and have been kicking away at setting up the actual Raspberry Pi for showing the screen. I got a whole 2'x4' sheet of it which is cut down to 11"x18". Two-way mirrors are actually like acrylic plastic,...
Always accept free plywood.Structural plans got scrapped for fear of structural instability.Instead we built 18 11"x11"x4" boxes.We have a working V.1The sensors are not as sensitive as I would have hoped.The first issue i ran into is that I assumed...
I have finally exported all the .prt files to .dwg files for laser cutting! You can see the DWGs in the file section, as well as a Adobe illustrator layout of all the parts for laser cutting. Home Depot sells 4'x4' 3/16 in plywood for $9. Not a bad deal....
Reviewing the TEC chip data sheet, it looks like it should be possible to swap out the resistor dividers and PID network components for an ATtiny (I2C slave) and x4 DAC (SPI). A thought triggered by seeing this module from Thorlabs OEM Temperature Controllers...
Well the v1.0 board arrived from OSH and was duly populated. It took me a while to put together the SPI code for testing with the Arduino, but got there in the end.Whilst trouble shooting why nFAULT was being pulled low managed to short one of the drivers,...
Cut all 2x4's and 4x4's. Here is my cut list:9 ea 2"x4"x33"4 ea 2"x4"x48"4 ea 4"x4" x 22 1/2"Started assembly. Table is wider than my doors so I have to do assembly in my basement.
I decided that interface between ZIF-socket and host machine will be implemented with help of this antique ISA backplane manufactured in 1984 (I bought it for about $20 last month):I cut out it a little to remove part with pull-up resistors, because...
The boost converter portion of the project will be quite straightforward - it'll be a copy of the boost converter in the Crazy Clock based on the NCP1402. It'll be powered by a single off-board AA or AAA battery (at the discretion of the builder).Next...
PCB IsolationI recently revisited the design using a PCB rather than a prototype board.Here is board after milling:Here is the complete board with eight NAND gates:Want to build a Discrete Transistor CPU?If you have ever contemplate building a transistor...
Remapping the KeyboardGiven most of the work is done with the "basic shift logic" how hard could it be?The basic shift logic:Well much harder than expected, here is the schematic:Now many will recognise this as a PLA (Programmable Logic Array).Designing...
Report descriptor (packet) structureByte.BitFunctionDescription0.7X7analog value X LSB0.6X60.5X50.4X40.3X30.2X20.1X10X01.7Y5analog value Y LSB1.6Y41.5Y31.4Y21.3Y11.2Y01.1X9analog value X MSB1X82[4:7]H[1:4]hatswitch buttons2.3Y9analog value Y MSB2.2Y82.1Y72Y63[0:7]Rzanalog...
Ordered 4x cw and 4x ccw, received 8x cw :( you just cant get what you order in this game. always something wrong always!Im considering ditching all this. its suppose to be fun not stress and im getting nothing but stress.I cant stress it anymore you...
Last monday I ordered the frame and 4" prints from Blick on Market St in San Francisco. The frame is 23"x13"x2" made out of white painted wood. The mat board is white 4-ply with four 4"x4" picture windows and one 9"x4" LED calendar window, and the glass...