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1. Hardware configuration Figure 1 shows the hardware configuration. When CPU is performing instructions, CPU accesses memory devices and peripherals. When you are programming, CPU is separated from bus lines by a Direct Memory Access (DMA) circuits...
Origin I first saw this screen on the ZBD EPOP 900 electronic shelf label (ESL). Thought it is going to be fun just reverse engineer them, so I bought a few of them: PCB After I got them, the first thing I tried was powering them up. And... I got nothing....
Tesla Coil A Tesla coil is an electrical resonant transformer circuit designed by inventor Nikola Tesla in 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity. Tesla experimented with a number...
The previous month, I made an Electric board relay-controlled circuit. Using the exact schematics and circuit diagram, I want to build an IR controlled Electric extension board. Keeping the form factor in mind, I designed a PCB and ordered it from JLCPCB....
I have drawn initial schematics for this sub-system, but have not started wiring it up.Here are design notes that help understand the schematics.Clock: At the heart of the Clock module is a 4 MHz crystal that is divided into four non-overlapping...
In this IoT project, I have shown how to make IoT-based Smart Home Automation using NodeMCU Cadio to control 4 home appliances from the Google Home, Amazon Alexa App, and Cadio. If the internet is not available, then you can control the home...
11/5/14 With Aaron, we tried to trace the controller cables. I documented the wirewrap job that had been done, probably at Case, as well as the connectors. Then I removed the offending innards and placed them aside, including an obsolete sort of motherboard....
The SubPos Wi-Fi Positioning System is an indoor positioning system that can be used in various environments such as metro lines, shopping malls, carparks, art galleries or even conference centers; essentially anywhere GPS doesn't penetrate. It could...
So that we have our pads/traces setup, the next question is how do we best connect our transistors ?For a refresher on transistors SparkFun has a pretty good tutorial, including amplifier applications, so here just the basics we need for this project.Also,...
Production version here : This project has been adapted for mass production, and packaged along with an SBC running the necessary software. The software has over 70 different experiments, and a custom experiment designer.Quarterfinal VideoProject logs!Non...
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...
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...
M10CUBE (M10 in short) road map This is a teamwork project! It is up to the contributors choice to show their name in public Soon... A PLC software using all M10CUBE I/Os : First PLC software will be CODESYS (Raspberry Pi runtime is free...
Let's make a start with describing the design. Before I forget how everything is supposed to work. It's rather complicated. The schematic (at it's current state) can be found in the file section of this project. Note that most IC's are HC in the...