Prepare your APM: Connect your RC receiver and GPS to your APM. Connect the RSSI out from your 5.8ghz receiver to the battery voltage monitor pin of your APM as shown in the video. Flash the APM with the latest Arducopter firmware that is available using...
A tool change system was part of the requirements from the start of this project. Being able to use multiple tools like brushes, palette knifes, pens, markers, and pencils unlocks so many creative possibilities. I tried to take inspiration from...
PCB RoutingWhen I first looked at this a few years ago, all I could really find was the "Channel" router algorithm. It was "as plain as day" that the "normal" auto-router was based on shortest path (or some variant), but not much was published.The Channel...
The flash chip needs to be programmed with the image of a FAT filesystem inside of an MBR partition table. I've got a mac, and the easy way to do this is to open up the Disk Utility and just ask it to make you a new disk image. For best results, make...
Right now the prototype suffers from two distinct problems. One is that there's some crosstalk of the LED rastering on the audio. That I believe I can solve by simply routing the audio line so that it doesn't cross under any of the raster lines. The...
➢Step descriptions: ✦Step 1:-Prepare a bluetooth audio receiver. ✦Step 2:-Open the cabinet, and it is the receiver circuit board. ✦Step 3:-Now we need D882 transistor. ✦Step 4:-Transistor emitter on negative pin. ✦Step 5:-Connect a wire on L+R...
The relationship between cognitive overload, social media and the omnipresence of Trump in the media seems deserving of some exploration. Trump’s propensity to frequently utter falsehoods has been well documented (Politico, 2019). The sheer volume, frequency...
I completely changed my mind for the electronics layout for V2 of the upright laser harp. Initially, I was a little disappointed, because I put a lot of time into brainstorming and designing PCBs for each layer of the laser harp. It was only when I reached...
This tuner is based on the stroboscopic effect. Wikipedia has an excellent explanation with animations. If you are not familiar then take the time to read it. The stroboscopic effect is basically the aliasing of two similar signals which...
The Problem 3D printing has become increasingly popular and accessible. As they become more desktop-friendly and affordable, they are now making their way into residential homes and classrooms. But is 3D printing really safe in a home environment? 3D...
The manufacturing and production needs of 21's century global trade are growing at an extraordinary pace, developing commercial demanding situations that rely upon sensors for absolution. The trifecta of 24-hour international manufacturing needs, reliable...
To start with, make sure you've done the PWM overlay as described in previous logs. Either by adding it to /boot/config.txt or doing it manually at the command line with dtoverlay.Next, as a preparatory step, open /sys/class/pwm/pwmchip0/export and write...
Here's a photo of the first print off of the machine. It wasn't quite ready to print, but I was printing within a relatively short time. Let me start from the beginning.Here's the box the printer comes in. It's big and beefy with lots of packing, +1...
Shahriar Shahramian joins us for the Hack Chat on Wednesday, December 18, 2019 at noon PST. Time zones got you down? Here's a handy time converter! No matter how much you learn about electronics, there always seems to be another door...
What's hard to see in the limited set of pictures: Using a bulkhead mounted rheostat that is accessible on the outside. This adjusts the speed of the ESC's. a USB connector to allow connections without taking anything off the gun to the itsy bitsy....