Category Archives: Software

Maker Advent Calendar 2025 #3: Bashing Buttons! | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Earth Grounder. I am the Earth Grounder!

In this video we do the third project from The 12 Projects of Codemas.

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Allsome QR040 ClampThis is an image of the product.

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Maker Advent Calendar 2025 #2: Let’s Get Blinky! | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Electron Ambassador. I am the Electron Ambassador!

In this video we do the second project from The 12 Projects of Codemas.

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Yum Cha Macropad 3-Key Mechanical KeyboardThis is an image of the product.

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Maker Advent Calendar 2025 #1: Getting Started | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Current Curator. I am the Current Curator!

In this video we do the first project from The 12 Projects of Codemas.

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Yum Cha Knife BladesThis is an image of the product.

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Module Monday #9: HW-103 Water Level Sensor Module | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Wire Whisperer. I am the Wire Whisperer!

Today is Module Monday.

In this video we take a look at the Smart Electronics Soil Moisture Hygrometer Detection Humidity Sensor Module For arduino Development Board DIY Robot Smart Car.

The code for this Arduino sketch is here: 2025-12-01-HW-103-Water-Level.ino.

We use the METCAL PS-900 Soldering Station for soldering.

We use the Yizhan Digital Microscope to take a close look at our module.

We use the ElectroCookie PCB Prototype Solderable Breadboard to make our LED traffic lights circuit.

We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.

We use the Plato Model 170 Wire Cutter as a wire cutter.

We use the Kaisi S-160 45x30cm Repair Mat as our workspace.

Errata: at t=22:58 I say I need smaller “capacitors” but what I meant is smaller “resistors”.

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Yum Cha 16MP USB CameraThis is an image of the product.

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Module Monday #8: HW-038 Water Level Sensor Module | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Electronics Guy. I am the Electronics Guy!

Today is Module Monday.

In this video we take a look at the 1pcs Rain Water Level Sensor Module Detection Liquid Surface Depth Height For Arduino.

The code for this Arduino sketch is here: 2025-11-24-HW-038-Water-Level.ino.

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Module Monday #6: GY-521 MPU-6050 Gyroscope/Accelerometer Sensor Module | In The Lab With Jay Jay

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Silly Job Title: Electricity Guardian. I am the Electricity Guardian!

Today is Module Monday.

In this video we take a look at the 10/1pcs GY-521 MPU-6050 MPU6050 Module 3 Axis analog gyro sensors+ 3 Axis Accelerometer Module MPU6500 6Axis GY-6500.

The code for this Arduino sketch is here: 2025-11-10-GY-521-MPU-6050-Gyro.ino.

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Taking information “out-of-band”

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Over in Intro to Data Oriented Design for Games, Nic Barker explains “taking information out-of-band”. Nic credits Andrew Kelly of Zig fame for introducing him to the idea (see Andrew Kelley Practical Data Oriented Design (DoD)).

The basic idea is that instead of having one list with items that have an enumeration with three different states, you can have three lists where membership implies the enum state, obviating the need to store the enum value in the item anymore, thus saving space and improving cache locality.