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Good debugging equipment priceless. Being able to gain insight into a system in a quick and clear manner greatly helps identify when issues occur. In first versions I like to add visual feedback for myself. This can be as simple as an RGB LED to detect status or as full featured as a touch screen display. For my senior …
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The PMSA003 is a small (sub $20) particulate matter sensor. As with most PM sensors, this module uses a fan and a laser to detect the size and counts of particulates in the air. As I am using the I2C version for current project, I needed to write the driver for it. When creating the struct, I realized the sensor's data …
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Image Link Series # Description Pin #1 (Current View) Drawing Catalog 53261 Right-Angle, Surface Mount Left Drawing Catalog 053047 Vertical, Through Hole Right Drawing Catalog 053398 Vertical, Surface Mount Right Drawing Catalog 053048 Right-Angle, Through Hole Left Drawing The general rule of thumb …
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The K1-1508SA-01 is a multi-directional switch perfect for adding cheap navigation functionality to designs. I was unable to find any 3D models or detailed footprints, so I created my own. As usual, it all starts with the datasheet... From here, I created the PCB land pattern in KiCad as described above. At this point, …
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Recently, I discovered navigation thumswitches or multi-directional thumbswitches. Fundamentally, they allow the user to switch between UP, DOWN, and SELECT. Up and Down are selected by angling the shaft, while Select is by pushing the shaft in. These are very simple switches and in my opinion, are an elegant solution …
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