Automated Pool Controller

Jerad Jacob designed this board to monitor and control a swimming pool:

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Here-Be-Dragons/Pool-Controller

Cloud-based pump speed, solar collector controls, and temperature monitoring for your pool with SmartThings and Alexa integration

Timer Control of a Hayward Tristar VS Pump and Hayward GL-235 Solar Pool Controller

Tristar_VS_Relay_Wiring

osmosis has shared the project on OSH Park:

Pool Controller v2.2

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Order from OSH Park

Automated Pool Controller

Game Gear HDMI with SNES Controller

From on the Hackaday log:
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Game Gear HDMI with SNES Controller

With its backlit color screen and Master System compatibility, the Game Gear was years ahead of its main competition. The major downside was that it tore through alkaline batteries quickly, and for that reason the cheaper but less equipped Game Boy was still able to compete.  Since we live in the future, however, the Game Gear has received new life with many modifications that address its shortcomings, including this latest one that adds an HDMI output.

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Here is a video of it in action:

Very early prototype using my GBA HDMI board to get a 1280x720p output from the Game Gear.

The custom PCB uses a Spartan6 FPGA to convert the Game Gear’s 160×144 12-bit RGB video into a 1280x720p HDMI output using a 4x integer scale. HDMI video is generated directly from the FPGA, audio is taken from the Game Gear’s headphone jack.

It has some pixel glitches, but it could be due to the wiring as it’s very sensitive to positioning. The Game Gear was bought as a “broken” unit and is in need of a cap replacement, that could also be causing issues.

Game Gear HDMI with SNES Controller

Hackaday Prize Entry: BeagleLogic

A few years ago, [Kumar] created the BeagleLogic, a 14-channel, 100 MSPS logic analyzer for the BeagleBone as an entry for the Hackaday Prize. This is a fantastic tool that takes advantage of the PRUs in the BeagleBone to give anyone with a BeagleBone a very capable logic analyzer for not much cash. This year,…

via Hackaday Prize Entry: BeagleLogic — Hackaday

Hackaday Prize Entry: BeagleLogic

Health-Monitoring Flexible Smartwatch

Hackaday Prize Entry: Health-Monitoring Flexible Smartwatch

[Nick Ames]’s Flexible Smartwatch project aims to create an Open Source smartwatch made out of a flexible, capacitive e-ink touchscreen that uses the whole surface of the band. This wraparound smartwatch displays information from the on-board pulse and blood oximetry sensor as well as the accelerometer and magnetometer, giving you a clear idea of how stressed…

 

Health-Monitoring Flexible Smartwatch

ADSR Envelope Generator Module

 

What’s an ADSR envelope generator? If you are a big music hacker, you probably know. If you are like the rest of us, you might need to read [Mich’s] post to find out that it is an attack-decay-sustain-release (ADSR) envelope generator. Still confused? It is a circuit used in music synthesis. You can see a…

via The Sound of (Synthesized) Music — Hackaday

ADSR Envelope Generator Module