Powering the Raspberry Pi using 12V is made a breeze using Automation HAT, this extension for the RPi adds a buck converter that regulates the 12V input down to the required 5V for the RPi. Besides being able to power the RPi using 12V this HAT adds two 12V output designed for 2A each (of course depended on your power supply) ideal for controlling valves or pumps. There are also two easy to use I2C ports and one 1-wire port broken out using JST connectors, this makes it easy to install sensors.Pinout

EPDiy E-Paper DriverEPDiy is a driver board which talks to affordable E-Paper (or E-Ink) screens, which are usually sold as replacement screens for E-Book readers. Why are they interesting?Easy on the eyes and paper-like aestheticsNo power consumption when not updatingSunlight-readableReady-made DIY modules for this size and with 4bpp (16 Grayscale) color support are currently quite expensive. This project uses Kindle replacement screens, which are available for 20$ (small) / 30$ (large) on ebay!The EPDiy driver board targets multiple E-Paper displays. As the driving method for all matrix-based E-ink displays seems to be more or less the same, only the right connector and timings are needed. The EPDiy PCB v5 features 33pin, 34pin and a 39pin connectors, which allow to drive the following display types: ED097OC4, ED060SC4, ED097TC2, ED060SC7. For the full list of supported displays, refer to the table below.Revision 5 of the board is optimized for the use with LiPo batteries, featuring a LiPo charger and ultra-low deep sleep current.This project supports a driver for the ESP-IDF and Arduino. For installation instructions, please refer to the documentation.Building ItIf you want to build a board right now, there are two possible routes:Use the new v5 PCB (hardware/epaper-breakout/gerbers_v5.zip). So far, I only tested a prototype of it. The newest gerbers should work, but are untested! If you have tested them, please let me know! The BOM is available at (hardware/epaper-breakout/BOM.csv). Positioning files for SMT assembly are available at (hardware/epaper-breakout/gerbers/epaper-breakout-top-pos.csv). Please double check the part positioning and Rotation with your assembly service! More information on the order process and where to find parts is in the documentation.Make sure to select the V5 board revision in idf.py menuconfig when building the examples.Use the old v4 PCB (hardware/epaper-breakout/gerbers_v4.zip). This is a bit more fresh, but should work. The BOM is available at (hardware/epaper-breakout/BOM.csv). Positioning files for SMT assembly are available at (hardware/epaper-breakout/gerbers/epaper-breakout-top-pos.csv). Please double check the part positioning and Rotation with your assembly service!Make sure to select the V4 board revision in idf.py menuconfig when building the examples.Gettings StartedFor instructions and more information visit the documentation!Join the Discussion Matrix Community: +epdiy:matrix.vroland.deDisplaysNameSizeResolutionCompatibleConnectorPin countCompatible since pcb versionNotesED060SC46"800 x 600yes, testedFH26W-39S-0.3SHW(60)39v2ED097OC49.7"1200 x 825yes, testedXF2M-3315-1A33V2Cheap, inferior contrastED097TC29.7"1200 x 825yes, testedXF2M-3315-1A33V2Slightly higher price, better contrastED097OC19.7"1200 x 825yes (should work)XF2M-3315-1A33V2Cheap, inferior performanceED047TC14.7"960 x 540yes, tested40-pin40LILYGO 4.7" EPDSupported only by 4.7" e-paper board by LILYGOED133UT213.3"1600 x 1200yes, testedadapter board39V2Adapter Board required, also PENG133DED060XC36"758 x 1024yes, testedTHD0515-34CL-SN34V5Cheapest, good contrast and resolutionED060XD46"758 x 1024yes, testedTHD0515-34CL-SN34V5ED060XC56"758 x 1024yes (should work as ED060XC3)THD0515-34CL-SN34V5ED060XD66"758 x 1024yes (should work as ED060XC3)THD0515-34CL-SN34V5ED060XH26"758 x 1024yes (should work as ED060XC3)THD0515-34CL-SN34V5ED060XC96"758 x 1024yes (should work as ED060XC3)THD0515-34CL-SN34V5ED060KD16"1072 x 1448yes (should work as ED060XC3)THD0515-34CL-SN34V5ED060KC16"1072 x 1448yes (should work as ED060XC3)THD0515-34CL-SN34V5ED060SCF6"600 x 800yes, testedTHD0515-34CL-SN34V5Different flex cable shapeED060SCN6"600 x 800yes (should work as ED060XC3)THD0515-34CL-SN34V5Different flex cable shapeED060SCP6"600 x 800yes (should work as ED060XC3)THD0515-34CL-SN34V5Different flex cable shapeED060SC76"600 x 800yes (should work)AXT43412434v5ED060SCG6"600 x 800yes (should work)AXT43412434v5ED060SCE6"600 x 800yes (should work)AXT43412434v5ED060SCM6"600 x 800yes (should work)AXT43412434v5ED060SCT6"600 x 800yes, testedAXT43412434v5Please note that board revision v5 is still in prototype stage!TroubleshootingThe following list is compiled from past experiences and GitHub issues:The displayed image displays only part of the image. Make sure to select the correct display type as described here.The existing image fades / darkens when updating a partial screen region. Make sure the VCOM voltage is calibrated for your specific display.The second third of the image is replaced with the last third. This seems to be a timing issue we could not yet quite figure out the reason for. For a workarround or suggestions please join the discussion.The ESP does not boot correctly when external periperals are connected. Make sure not to pull GPIO12 high during boot, as it is a strapping pin internal voltage selection (https://github.com/vroland/epdiy/issues/17).More on E-Paper DisplaysList of E-Paper devices and their screens: https://e-ink-reader.ru/chg_dsp_en.php (thanks, @mcer12)Reverse engineering of display pins, possible starting point for alternative drivers: https://linux-sunxi.org/PocketBook_Touch_Lux_3 (thanks, @mcer12)Reverse engineering and explanation on driving EPDs: http://essentialscrap.com/eink/index.htmlEarlier take on driving 6" EPDs with an ESP32, basis of original power circuit: http://spritesmods.com/?art=einkdisplay&page=1Related Hackaday projects: https://hackaday.io/project/21607 https://hackaday.io/project/11537If you know any other useful resources or have suggestions, please comment on #31!Hackaday ProjectFor more details, see the project page on Hackaday: https://hackaday.io/project/168193-epdiy-976-e-paper-controller LicensesThe weather example is Copyright (c) David Bird 2018 (except for minor modifications). Please refer to examples/weather/README.md for details.The board and schematic are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.Firmware and remaining examples are licensed under the terms of the GNU GPL version 3. Utilities are licensed under the terms of the MIT license.

Please look at https://www.gbscaio.com/ for details

Every Sunday on our YouTube channel PlumPot. We do a live stream where we build a project as a community, the aim is to introduce PCB design to beginners.We made this Makro keyboard together. It allows the user to only use one button to do a certain action. This is ideal for me as I use Altium and KiCad. So now I use one button to place a track, rotate or place a component, does not matter what CAD software I'm using.The IC we used is the same as the BluePill STM32F103FAs always all our designs are always free and available on GitHub. Also, detail explanation available on YouTube can be seen below.Let us know if you make it or have any improvements you can suggest. We will update and build and release new versions as we go :)Have a great day all. Stay safe and healthy. You can find more about our projects below:Follow us on: - Website: www.plumpot.co.uk Instagram: https://www.instagram.com/plumpot_official/Facebook: http://www.facebook.com/Plumpot55 Twitter: https://twitter.com/plum_pot Discord: https://discord.gg/Ba4SHpT

This project is about a PLA replacement for the Commodore TED series computers, such as the C16/C116 and Plus/4.Did you like the PLA20V8 PLA replacement for the Commodore 64? I have designed a GAL PLA for the TED series as well and it consists of just a single GAL16V8.GALs are available at very low cost on popular internet marketplaces can be programmed using the popular TL866 EPROM programmer. They are DIP devices and can therefore be soldered by novice solderers. A PCB is needed that wires the GAL in the correct way and for that you have come to the right place.The required fusemaps and more information is available here:http://www.freepascal.org/~daniel/c16pla/Recommended manufacturing options:Thickness: 1.0mmSurface finnish: HASL lead-freeSolder mask colour: BlackIf you order a panel, route-process: V-scoringFor all other options, please select the defaults

As a child I have owned an Atari 800XL. This 8-bit computer always had a special place in my heart. After almost 35 years I have decided to dive a bit deeper into the circuitry of this now called retro computer. What better way to start than to remake the PCB from scratch.This is a revision with the fixed mistakes from my original design.

The most important part of a computer architecture is a clock circuit. This circuit has the option to run freely in a-stable mode and also operate in single step debugging mode.

Small breakout board based on STM32F070 microcontroller from ST Microelectronics.With this board one can easily prototype small ARM Cortex M0 applications with minimum effort and expense. It can be used as a standalone module, or fitted in a socket/shield for a more complex application.The microcontroller can be programmed directly from the USB interface, making use of the DFU bootloader.The bootloader mode can be activated closing the jumper JP1 and pressing the RST button, after connecting the USB interface to the host.The breakout board features following peripherals:3.3V LDO Voltage regulatorRST buttonPower LEDUser LED (connected to PC13)8 MHz crystal32.768 kHz crystalSWD header (not populated)USB header (not populated)GPIO headers with all pin exposed, except the ones reserved for the crystals.Full documentation is available on Github, including schematic, layout, Gerber files, centroid positioning files and Bill-Of-Materials. It will be possible to order fully-assembled PCBs from any PCB supplier, including PCBWay of course.Some code examples and pre-built binaries will be published in the future.https://www.pcbway.com/setinvite.aspx?inviteid=334135

A hat to fit on Arduino for programming ATTiny85 microcontroller chips. This fits the Arduino Uno female pin headers perfectly and enables easy programming of the microcontroller via the Arduino Uno.Additional female headers can be added to enable direct access via jumper wire to the ATTiny85 microcontroller.The hat can be fitted with longer lead female headers to enable access to the Arduino Uno with the board fitted, or with just male headers.

When PCBWay asked me to make something for Christmas, I decided to make a Christmas ball. I designed a snowflake in GIMP and used KiCad to deisgn a simple circuit to control 20 LEDs using a ATtiny1617 microcontroller. The white soldermask with ENIG finish is just stunning! All of this runs of a CR2032 battery.

YouTube Video: https://youtu.be/4CtUpvBF1U8Also see Episode 2, Learning Tasmota, Part 2 : https://www.youtube.com/watch?v=nsMcXmTql3wRecently, I built my first home automation system for outdoor garden lighting using the Tasmota open source firmware in addition to finished consumer relay switches from Sonoff and Shelly. As I started working with Tasmota, it became evident that the firmware was very flexible for many use case applications.Tasmota works with ESP8266 and ESP32 microprocessors and comes with many features which include not only a web interface and MQTT client interfaces but also common standalone functions such as:Timerscustom pin mappingconfigurable component behaviorrules (scripting)support for a wide variety of sensors, buttons, relays, LEDs.Is it possible to build cool electronic devices without having to write any Arduino code? The answer is YES!This is a reference design for the Learning TasmotaPCB based on a Wemos D1 mini. It allows new Tasmota users to learn how to configure the firmware for various use cases. The PCB is configured with the following devices: two momentary push buttons on D1 and D34 addressable LEDs on D5-8a beeper/buzzer on D2 LDR light sensor hooked through the single analogue pin with a voltage divider for 0-3.3v.A Maxim DS18S20/DS18B20 temperature sensorI hope that you find this useful for learning the Tasmota open source firmware and implementing simple devices such a light/temperature sensors and connected LEDs and switches.Learn, Master Apply!Sincerely,Mark Troyer at https://MarkTroyer.Tech

You've probably heard of FreeTocuhDeck. You haven't? Go check it out: https://www.youtube.com/watch?v=soIGV6BszcMWhen I was designing FreeTouchDeck, I quickly ran in to issues when using a breadboard. Loose connections made it difficult to debug, because I didn't know if a bug was in the code or because of hardware issues. I designed a PCB that made it easy to connect the TFT screen to the ESP32. I also has the option to add an extra row of header pins so you can still use the pins that are unused by FreeTouchDeck.This PCB is made for the 38-pin ESP32 DevKitC (WROOM-32D) and the 480*320 ILI9488 TFT + XPT2046 touch controller.This PCB is designed to fit in the FreeTouchDeck case: https://www.thingiverse.com/thing:4661069