prithul0218

prithul0218

7+ day streak

3D printer build update: now everything is nicely screwed in together. No more tapes

img_20200708_232246.jpg

3D printer build update: Taped together the frame.

img_20200707_213501.jpg

The extruder nozzle for my 3D printer came broken :sadparrot:

img_20200707_010818.jpg

Starting to build a 3D printer today! I'm finding too many projects to do in this quarantine. I was building something else but recently I was surprised with a lot of 3D printed parts for making a new printer by a friend who already owns a 3D printer. Today I finally got all the parts I need to get started with building it. The 3D printed parts will make the build really quite easy. It may not print great on first try but I'll eventually upgrade it with its own printed parts, hopefully reaching a point where it's as good as a commercial printer. Wish me luck!

img_20200706_200549.jpg

Voila! From drawing to real life. I've been planning to make this project for almost a year now.

image.png

Learning Kirchoff's Law

img_20200705_173814.jpg

Yass

image.png

Cut some plywood for a project today

img_20200703_215640.jpg

Reading more on calculations for buck converters

image.png

Just made this poor little thing escape the magic smoke with 12V on 5V pins :((

img_20200702_223044.jpg

My computer table is a mess. Finally managed to make a buck converter with Arduino. Got an efficiency figure of 91% when stepping down from 12V to 5V 😉

img_20200702_203925.jpg

Here's a newbie 3D modeling I did a few days ago as practice

everything_in_enclosure_v8_front_left.png

I put together yesterdays counter circuit on a prototype PCB. I'll keep it running in my room so that the whole world can see if I'm entering or leaving my room here. Yesterday night, a bug probably sat on the sensor and managed to break the code. The online dashboard showed that I entered/left my room 400 times throughout the night. The WiFi modules was stuck in a boot loop when I woke up 🤯

img_20200701_223023.jpg

Internet of Things is fun. I just made this visitor counter. It uses a distance sensor to detect if anybody is entering or leaving through a gate and sends the data to ThingSpeak online. ThingSpeak then shows the number on a graph. This is the type of device used in shopping malls to get data on the number of customers. You can see how many times I enter or leave my room for today here thingspeak.com/channels/1091566

image.png

I've been tinkering with IFTTT a lot these days. Yesterday I found this amazing service. Check it out here ifttt.com/applets/uTdq7iDJ

screenshot_20200630-175926.png

Not a new PCB design but I had left it incomplete long ago. Finally completed it today. It's for an electronic load project based on the Arduino Nano.

image.png

Today's soldering. It's a small power regulator board that will give me multiple positive and negative voltage outputs from a single AC transformer. It will come handy for prototyping analog circuits. Works like a charm on first power up

img_20200628_210201.jpg

Internet is down today so it's time to hack together some hardware! This is going to be a motor driver circuit to work with M5StickC modules. Pardon my poor parts placement. Posting this with mobile data.

img_20200627_211915.jpg

Here's a full photo of my CNC drawing robot, or pen plotter from yesterday. I made it last year and I get surprised every time it runs cause most of my hardware projects don't seem to last longer than a few weeks

img_20190729_194814.jpg

#AMA with Limor Fried tonight. Pulled out the CNC drawing machine I once made from under my bed and drew the Adafruit logo on it.

Yesterday night I finished making this app that graphs all the sensor analog output values on my line follower robot. You can see how little it moves away from the center, even when taking sharp turns. Thanks to PID controller for such accuracy.

Tried an online dashboard service for the first time. My ESP8266 is sending my room temperature to the cloud and it's being written to a log every hour.

annotation_2020-06-23.png

Started tinkering with MIT app inventor again after a long time. I use it because I cannot code in Android Studio :(( I made this app to test the DrawArc function for the canvas component that wasn't there when I last used the software. I managed to draw something that kinda looks like a graph I guess. Might be able to make a graph drawing app eventually which would be able to talk to an Arduino and get sensor data over Bluetooth, in order to plot it on the graph.

screenshot_20200622-233238.png

Made a studio light almost 100% out of recycled parts. LEDs are from old ceiling lights, the AC driver circuit got burnt but the LEDs light up bright as new. Metal frame is from an old computer casing and batteries are from old laptop. Simple high frequency dimmer circuit with Arduino - the only non recycled part. Can be mount on tripods easily. I will soon add warm white LEDs to make the light a bit more natural white. Hopefully it's gonna be of great use when recording videos :bananaparrot:

img_20200621_150832.jpg

Continuing the chain. Love scrapbook

screenshot_20200621-122925.png

Built a weather server today as a test. I will later be installing it on the roof of the house to get yearly temperature and humidity graphs etc.

104320158_577642759793518_509751691540062252_n.png