Implementation of the Bone Ray tone control by Merlin Blencowe. Schematic found at https://www.guitarscience.net/tsc/boneray.htm#RIN=38k&R1=470k&R2=470k&RM=1M&RT=1M&RL=1M&C1=220p&C2=1n&C3=4.7n&C4=1n&RT_pot=Linear&RM_pot=LogB

My attempt to design a passive LPF tone stack that will not affect the tone of the circuit at all when turned all the way up. TLP stands for Transparent Low Pass.

Welcome to your new project. Imagine what you can build here.

Welcome to your new project. Imagine what you can build here.

Welcome to your new project. Imagine what you can build here.

Welcome to your new project. Imagine what you can build here.

1 kHz Tone Detector Using CD4046 PLL with Logic-Level MOSFET Output

Cow health-monitoring wearable PCB for a cow-mounted device. Rear strap electronics target 20-25 g and front sensing assembly target about 15 g. Uses an ESP32-based sensor controller, 200 mAh LiPo battery, battery charging circuitry, and interfaces for ammonia, methane, IR temperature, and saliva sensing. Design must tolerate moisture, mucus, debris, vibration, fur contact, and tongue/lick exposure while remaining compact and lightweight for wearable use.