2 layers58 × 12 mm
LiFePO4-1S HY2112-BMS
Harshavar8jdm/1S-LiFePO4-bms
A compact, high-efficiency 2-layer 1-Cell (1S) Lithium Iron Phosphate (LiFePO4) Battery Management System (BMS) built around the Hycon HY2112 protection controller.
10 parts1
Boards by Harshavar8jdm
16 boardsOpen-source boards designed in KiCad by Harshavar8jdm on GitHub, from 16 repositories. A board’s address here is its repository’s there.
- 2 layers80.4 × 56.8 mm
- 2 layers53.1 × 33.9 mm
- 2 layers52 × 30 mm
- 2 layers43 × 21.3 mm
- 2 layers40 × 11.5 mm
Li ion charger design
Harshavar8jdm/1S-Li-ion-Battery-Charger-Module
A single-cell (1S) Lithium-Ion / Lithium-Polymer battery charging PCB based on the Texas Instruments BQ24092 linear charger IC.
14 parts - 2 layers55 × 35 mm
- 4 layers90 × 80 mm
- 2 layers50 × 40 mm
Capacitor discharge ignition
Harshavar8jdm/capacitor-discharge-ignition
A minimalist, discrete AC-CDI circuit for small single-cylinder 2-stroke and 4-stroke engines powered by a stator exciter coil and an inductive pulse generator (pickup coil).
11 parts - 2 layers32 × 16 mm
Usb to uart bridge
Harshavar8jdm/cp2102-usb-to-uart-bridge
The design includes specific additions to address reliability issues common in similar modules, specifically the addition of TVS diodes for ESD protection and proper CC pin termination for USB-C standard compliance.
12 parts - 4 layers70 × 50 mm
Engine monitoring unit
Harshavar8jdm/engine-monitoring-unit
An open-source, automotive-grade Engine Monitoring Unit (EMU) designed to bring real-time engine telemetry and diagnostics to air-cooled single-cylinder motorcycles (such as the Hero Passion Plus) that lack factory…
65 parts - 2 layers65 × 30 mm
- 2 layers20 × 15 mm
Lmr16006-12v-3v3-sw buck conv
Harshavar8jdm/lmr16006-12v-3v3-sw-buck-converter
readmecontent = """# Ultra-Compact 12V to 3.3V Buck Converter Module (LMR16006)
13 parts - 2 layers28 × 22 mm
Micro sd spi breakout module
Harshavar8jdm/micro-sd-spi-breakout-module
A compact, high-performance, 2-layer MicroSD Card Breakout Board designed in KiCad for embedded microcontrollers using the SPI (Serial Peripheral Interface) bus.
6 parts - 2 layers18 × 14 mm
Tps61040dbvr boost converter module
Harshavar8jdm/tps61040dbvr-boost-converter-module
A compact (18 mm × 14 mm) 2-layer DC-DC step-up converter module designed around the Texas Instruments TPS61040 boost switching regulator.
12 parts - 4 layers45 × 35 mm
USB PD Power Supply
Harshavar8jdm/USB-PD-Power-Supply
A 4-layer custom printed circuit board designed around the WCH CH224A USB Power Delivery sink controller. This board requests discrete voltage profiles from 5V up to 28V (USB PD 3.0 / 3.1 EPR) at power levels up to…
40 parts