BLF flashlight driver for M6/SRK lights, DD+CC

Features

• 46 mm diameter.
• Two channel output: Direct drive + current regulator LED driver.
• R5, R3, R4, C2 for enhanced stability.
• Oversized heat plane for the 7135s with good thermal link to the ground ring.
• Generous 0603 pad sizes through-out that will accept 0805 parts as well.
• Universal MCU pads, Tiny13-Tiny85 all fit.
• Generous wire pads for emitters, e-switch and side indicator LED.

Revision changes

• Added pads for up to eight 7135 regulators
• Up-size C1, D1 pads to 0805
• Add C3 for optional load decoupling

Suggested parts list

• U1: Atmel Attiny25, SSU or SSN package
• U2-U9: 7135 350 mA LED driver
• Q1: Vishay SiR800DP
• C1: 10 uF, X5R or better, 0805
• C2: 100 nF, X7R or better, 0603
• C3: Optional, 10 uF, X5R or better, 0805
• D1: Schottky diode, 200 mA 20 V or better, 0805 or SOD323
• R1: 330 kohm, 1%, 0603
• R2, R3: 100 kohm, 1%, 0603
• R4: 47 ohm, 5%, 0603
• R5: 4.7 ohm, 5%, 0603

Moves SID port for MixSID

Mini-Whip NOT TESTED

Micro SD card reader add-on for Dragonfly using the quad SDIO port. Added pullups on the data lines.

Front panel replacement for the Thermaltake Urban S31, featuring 4x USB3.0 ports.

More information at: https://www.qubitsandbytes.co.uk/thermaltake-urban-s31-case-upgrade

10 Key Keypad for use with Zealio switches and LEDs.

3D files and source code are available at https://github.com/JimGage/BirthdayCakeKeyboard

LED Front panel board for Guildline 9520 teraohmmeter.

Designed to use 3 x LUMEX LDT-A514RI 7-segment displays and EDAC edge connector.

Badge to go with the BBC micro:bit.

Check the sources on Github.

Mic Preamp Control Panel

cluster-powercontroller

AVR-based node power controller for the KSI computer cluster

• 32 opto-isolated channels
• Atmel ATMega328P
• USB interface via FT232R

https://github.com/KSIUJ/cluster-powercontroller/

32u4 uC with HopRF RFM95 915MHz radio for LoraWAN

DS12887 substitute with replaceable battery.
Uses:
- 1x DS12885/BQ3285 in SOIC package
- 1x 32.768kHz crystal, SMD, 6pF
- 1x CR1220 battery holder (Harwin S8411-45R or equivalent)

Adapted from previous versions to use regular 0.1" ‘square pin’ breakaway headers

Mightyduino

A DIY Arduino type hardware board based on ATmega644p Atmega1284p

This project is free and based on @MCUDude’s MightyCore which has awesome well designed kits for serious development with AVR’s.

Mightyduino is an Arduino with more memory than an Arduino Pro mini. It can use 644p (64k) or 1284p (128k) chips. It’s voltage can be configured by U1 and the frequecy can be configured by the Murata’s ressonator (crystal). It has a power led and another one connected to pin D0. The push button performs reset. DTR pin can be used to external reset. The RAW pin is the input voltage <16v. The VCC pin is the regulator output and IC voltage, it can be loaded up to peak of 500mA.

To burn the bootloader (optiboot 6.0) you must first install the MightyCore boards on Arduino App , connect the ICSP pins to your bootloader programming hardware (eg. USBASP), select one of MCUDude’s board that meet the specs you use and burn bootloader. Then you can access (ttl-serial dongle) like a normal arduino on the serial pins (like arduino pro mini). Mightyduino uses the ‘standard’ pin mapping.

Version History

• v1.3 - Changed C1 C3 footprint, add reset pin for SPI programming.
• v1.2 - Switch U1 shutdown pin 3 voltage to RAW
• v1.1 - Switched Led from pin D13 to D0, cosmetic improvements
• v1.0 - Initial release

Quick Links:

Order boards from [OSHPark] (https://oshpark.com/shared_projects/#Check the updated version v1.3)

Or download the Gerber files for other pcb maker

Download the schematic PDF

ATmega datasheet 644p 1284p

Screenshots

Components

Top

Bottom

Pin Mapping

Trippy RGB, Barrel of Makers version. LED and resistor board. (Brd 4of4)

BML icoBoard PMOD to OV5642 Camera

USB charger module

4x3 Keypad controller board.

• U1: ARM Cortex-M0+ (LPC812M101JDH16)
• C1: ~0.1uF C0603
• SWD: 2x5 1.27mm Pitch

More Information