Shared Projects

MA3 Three Phase amp for BLDC motor drive

See: https://www.hackster.io/chipmc/solar-power-module-v2-ef387a

Memory Adapter from SOJ36 to DIP32, with buffer

Real Retro 3KB RAM board RevB. Designed for the RC2014. Board design files are at https://github.com/ancientcomputing/rc2014/tree/master/eagle/rr3kram

A mini shield for an Arduino Mini Pro to simplify the connection to the RFM69W or RFM69HW. It includes a 1206 capacitor to stabilize the supply voltage, (tested with 10uF), a pad for Vcc, GND and IRQ. The RFM69 will be in “front” of the Mini Pro, fully accessible.

headphone amplifier replacement for Befaco Output II module to reduce noise.

muffs thread with more info

U1: LME49723M

R1, R5: 47k

R2, R6: 100k

R3, R4: 10k

C1, C2: 100n

C3, C4: 1u

PIR Sensor with Arduino Nano R3

Temperature and Humidity Sensor with Arduino Nano R3

I designed this power supply for small projects, prototyping, Arduino, IoT, and wireless embedded applications. An ATtiny45 provides the ideal balance between features and efficiency. When on, efficiencies go as high as 92%. When off, it only consumes 2μA! It uses two LEDs, red and green, to provide simple information about the charging and power of the device.

This power supply has protection for input overcurrent, output short circuit, output disconnect, battery disconnect, battery overvoltage, and battery undervoltage.

It’s difficult to find a power supply to convert a Lithium-Ion battery to a 1.8V output with high current output, high efficiency, and safety features. This board uses the Texas Instruments TPS63020, which is capable of this task.

This power supply uses a single cell Lithium-Ion battery. The battery is charged at a maximum of 500mA using the Microchip MCP73831. A battery is required to use this power supply.

Specs 1.8VDC output 4A peak output (100ms max) 2A continuous output 90%+ efficiency 2μA sleep current Micro USB charge input Micro JST Connector for Single Cell Li-Ion 500mA max charge rate Minimum recommended battery capacity - 500mAh

I designed this power supply for small projects, prototyping, Arduino, IoT, and wireless embedded applications. An ATtiny45 provides the ideal balance between features and efficiency. When on, efficiencies go as high as 92%. When off, it only consumes 2μA! It uses two LEDs, red and green, to provide simple information about the charging and power of the device.

This power supply has protection for input overcurrent, output short circuit, output disconnect, battery disconnect, battery overvoltage, and battery undervoltage.

It’s difficult to find a power supply to convert a Lithium-Ion battery to a 3.3V output with high current output, high efficiency, and safety features. This board uses the Texas Instruments TPS63020, which is capable of this task.

This power supply uses a single cell Lithium-Ion battery. The battery is charged at a maximum of 500mA using the Microchip MCP73831. A battery is required to use this power supply.

Specs 1.8VDC output 4A peak output (100ms max) 2A continuous output 90%+ efficiency 2μA sleep current Micro USB charge input Micro JST Connector for Single Cell Li-Ion 500mA max charge rate Minimum recommended battery capacity - 500mAh

I designed this power supply for small projects, prototyping, Arduino, IoT, and wireless embedded applications. An ATtiny45 provides the ideal balance between features and efficiency. When on, efficiencies go as high as 92%. When off, it only consumes 2μA! It uses two LEDs, red and green, to provide simple information about the charging and power of the device.

This power supply has protection for input overcurrent, output short circuit, output disconnect, battery disconnect, battery overvoltage, and battery undervoltage.

It’s difficult to find a power supply to convert a Lithium-Ion battery to a 5V output with high current output, high efficiency, and safety features. This board uses the Texas Instruments TPS63020, which is capable of this task.

This power supply uses a single cell Lithium-Ion battery. The battery is charged at a maximum of 500mA using the Microchip MCP73831. A battery is required to use this power supply.

Specs 1.8VDC output 4A peak output (100ms max) 2A continuous output 90%+ efficiency 2μA sleep current Micro USB charge input Micro JST Connector for Single Cell Li-Ion 500mA max charge rate Minimum recommended battery capacity - 500mAh

Kit to Help Teach CRT Soldering

Currently untested. Just received boards from OSHPark.

Follow along the journey! https://github.com/CalvEngIO/LiPoBBSupplyWithCharging.git