njeff/portaled1This is essentially a flashlight I designed because I wanted to use some free parts from TI. This uses the LM3410 driver to boost the voltage of the LiPo battery and drive the LEDs at a constant current.
Const led is an open-source printed circuit board by njeff, from the njeff/portaled repository on GitHub. It is a 2-layer board of 76.2 × 30.5 mm with 183 parts on 20 nets, routed with 180 tracks and 26 vias.
It is built around the ATTINY85-20SU, LM3410XSD and MCP73831, with the QS5U28TR among its other parts. Its parts include 158 connectors, 6 resistors, 5 capacitors, 5 diodes and 3 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
This is essentially a flashlight I designed because I wanted to use some free parts from TI. This uses the LM3410 driver to boost the voltage of the LiPo battery and drive the LEDs at a constant current. I have it setup to drive two 3W LEDs in series at approximately 630 mA (at max brightness).
An ATTiny85 is used to control the whole system, and push button is used input.
This repository has the C firmware code and the KiCAD PCB design files. The PCB in the const-led folder has an additional battery gauge IC (MAX17043) for more accurate battery level tracking, and the one in const-led-ez doesn't. I only made the ez variant.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 150 | Conn_01x01 | personal_f:VIA-12mil | J8, J8, J8, J8, J8, J8, J8, J8, J8, J8, J8, J8, J8, J8, J8, J8 +134 |
| 4 | Conn_01x01 | Mounting_Holes:MountingHole_3.2mm_M3 | J4, J5, J6, J7 |
| 2 | 10u | Capacitors_SMD:C_1206 | C3, C4 |
| 2 | 4.7u | Capacitors_SMD:C_0603 | C1, C2 |
| 2 | LED | personal_f:ChanzonLED | D4, D6 |
| 2 | LED | LEDs:LED_0603 | D2, D5 |
| 1 | 0.1u | Capacitors_SMD:C_0805 | C7 |
| 1 | 0.3 | Resistors_SMD:R_0805 | R4 |
| 1 | 100k | Resistors_SMD:R_0603 | R5 |
| 1 | 10k | Resistors_SMD:R_0603 | R3 |
| 1 | 1N5819 | Diodes_SMD:D_SOD-123 | D3 |
| 1 | 1k | Resistors_SMD:R_0603 | R9 |
| 1 | 2k | Resistors_SMD:R_0603 | R2 |
| 1 | 330 | Resistors_SMD:R_0603 | R1 |
| 1 | 4u | Inductors_SMD:L_0805 | L1 |
| 1 | ATTINY85-20SU | Housings_SOIC:SOIJ-8_5.3x5.3mm_Pitch1.27mm | U3 |
| 1 | AVR-ISP-6 | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm_SMD | CON1 |
| 1 | Conn_01x02 | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J3 |
| 1 | Conn_01x02 | personal_f:JST-PH-2 | J2 |
| 1 | LM3410 | Housings_SSOP:MSOP-8-1EP_3x3mm_Pitch0.65mm | U2 |
| 1 | LOGO | personal_f:Guang | G*** |
| 1 | MCP73831 | TO_SOT_Packages_SMD:SOT-23-5 | U1 |
| 1 | Micro_USB_B | personal_f:Micro_USB_B_NH | J1 |
| 1 | QS5U28 | TO_SOT_Packages_SMD:TSOT-23-5 | Q1 |
| 1 | SW_SPST | Buttons_Switches_SMD:SW_SPDT_PCM12 | SW1 |
| 1 | SW_SPST | Buttons_Switches_SMD:SW_SPST_B3S-1000 | SW2 |
| 1 | TEST | Measurement_Points:Measurement_Point_Round-SMD-Pad_Small | TP1 |
njeff/portaled
This is essentially a flashlight I designed because I wanted to use some free parts from TI. This uses the LM3410 driver to boost the voltage of the LiPo battery and drive the LEDs at a constant current.
Caraffa-git/LM3410X-Laser-Driver
Yet another CC laser diode driver based on LM3410X
AnhadSawhney/MechanicalKeyCalculator
These are the CAD files for a calculator with mechanical keyswitches.
Jeija/esp8266-smartwatch
ESP8266 DIY WiFi Smartwatch with MPU-9250, RTC, OLED, FT232, ...
azerimaker/Penguino-STM32WL-LoRa-E5
This repo contains all the necessary design and fabrication files for the Seeed Studio LoRa-E5 based Penguino Feather breakout board.
It measures 76.2 × 30.5 mm and has 2 copper layers, 1.6 mm thick.
183 parts, built around the ATTINY85-20SU, LM3410XSD, MCP73831 and QS5U28TR. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the njeff/portaled repository on GitHub, at the commit this page was made from: the board is const-led-ez/const-led.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask njeff before reusing the design.