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foIn this log, let's examine the electronics of the Rapid Impedance Spectroscopy Array, RISA.---------- more ----------ConstructionFigure 1: Unpopulated PCBs showing board stackup.RISA consists of 2 two-layer boards, which are connected by .1" headers....
Here we are going to make a circuit to isolate the 12v IR illumination devices from the 5v raspberry pi! We need to switch them on using GPIO out from the pi, but we don't want to expose our raspberry pi to any risk of it getting 12 volts! Now, this...
Here’s a funny queston. How do you solder 78 separate APA102-2020 onto a board? Just in case it isn't clear, each of these has 8 pads (6 active) and each unit only 2mm on each side. These parts are TINY! I normally make SMT prototypes by dabbing the...
Actually, none... Due to a combination of factors unrelated to this project, specifically, progress on this project has been limited to the theoretical realm. Well, that is progress, but kinda intangible. ---- I [finally] built a house-battery setup...
Before reading this post, I highly recommend reading "Design of Kite Open Mobile Platform". Kite v2 is the upcoming design of Kite. We are crowdfunding for it on KICKSTARTER (do look at that page for a quick pitch, but without too many tech...
Introduction There's a lot of room for paranoia when stepping from the digital domain with its noise margins, supply ripple and voltage tolerances into areas of analog and mixed signal circuitry. Connectors, analog switches, scaling networks, voltage...
From the previous logs, we can summarize the V3s power supply requirements to: SMPS for +3.3V / 1.2A for the I/O power supplyLDO for +3.3V_AO / 30 mA for the Always-On power supply (RTC timer)LDO for +3.0V / 200 mA for the analog power supplySMPS...
This post is part of a series about this badge What goes into the design of a board like this? There's a lot of choices to make when designing a circuit board, and I'll try to tell you the story of how I went from the idea to the final design. Design...
The time had come to make a new prototype, one with all the hardware needed to accomplish the goals of this project! The front end was well proven at this point, and just needed a slight shrink to fit under an off the shelf RF shield. The ADC had always...
21/01/2024, 08:22, Sunday. I'm quite stoopid, I already said I gave up on the project, but I can't, for the life of me, just give up. And besides, like I said on previous logs: looking for artificial muscles/soft actuators is my hobby now....
INTRODUCTION The elephant detection component of the system will communicate with these using Bluetooth (100m supposed range). We can go ahead and power them using the same solar/lead acid battery component that we use for the elephant detection components,...
bootdsc12:51 PM bootdsc12:51 PMhaha thesebelik12:51 PMthe problem that i'm solving with my deck (my car radio sucks) could've been easily solved with an off the shelf android auto head unit for like $250, but i've already spent more than that on parts...
Hi!Today I'm going to tell you about Alice's power management and power structure. As for today, it is like this:It's pretty simple and mostly made of ready-to-go modules. This is one of my beliefs - projects like this are better if they're modular (modules...
For The Open Bar hardware design, we started off with a simple approach. For the first iteration of the project, the idea was to use a CO2 tank to pressurize the ingredients that would be dispensed. Each one of the ingredients would have 2 hoses -- a...
Today is the deadline for the Hackaday Prize contest, and that's a great chance to write a recap article about Prism. ---------- more ---------- Before going on with the technicalities, you can read an overview of the reasoning behind the project, learn...