--- title: Olimex PICO-EVB automation board adds high-voltage... description: Olimex has released the PICO-EVB, a €14.95 automation board designed for Raspberry Pi Pico and compatible boards. It features four optoisolated inputs... canonical: https://daily.dev/posts/olimex-pico-evb-automation-board-adds-high-voltage-terminals-to-raspberry-pi-pico-family-0hfmvalor twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Olimex PICO-EVB automation board adds high-voltage terminals to Raspberry Pi Pico family | daily.dev og:description: Olimex has released the PICO-EVB, a €14.95 automation board designed for Raspberry Pi Pico and compatible boards. It features four optoisolated inputs... og:url: https://daily.dev/posts/olimex-pico-evb-automation-board-adds-high-voltage-terminals-to-raspberry-pi-pico-family-0hfmvalor og:image: https://api.daily.dev/og/posts/0HFMvaLor.png og:image:alt: Olimex PICO-EVB automation board adds high-voltage terminals to Raspberry Pi Pico family og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Olimex PICO-EVB automation board adds high-voltage terminals to Raspberry Pi Pico family **[CNX Software](https://daily.dev/sources/cnx-software)** · [@cnxsoft](https://daily.dev/cnxsoft) · 3 min read · 0 upvotes · 1 comments ## Summary Olimex has released the PICO-EVB, a €14.95 automation board designed for Raspberry Pi Pico and compatible boards. It features four optoisolated inputs supporting 3.3–30V DC or 110–220V AC, four relays rated for 15V DC/240V AC, a USB-C port, a UEXT expansion connector, and status LEDs. The board is open-source hardware with KiCad design files on GitHub, and comes with Arduino and MicroPython code samples including a web server example. It also supports ESPHome firmware for Home Assistant integration. Compared to similar relay boards, it stands out by combining both relays and high-voltage inputs in a compact 100×70mm form factor. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What relay and input specs does the Olimex PICO-EVB board for Raspberry Pi Pico offer? The Olimex PICO-EVB provides four 15V DC/240V AC relays and four optoisolated inputs accepting 3.3-30V DC or 110-220V AC. It works with Raspberry Pi Pico, Pico 2, Pico W, Pico 2 W, and the Olimex RP2040-PICO30, and includes a UEXT connector for I2C, UART, and SPI expansion plus USB-C power and programming. It costs 14.95 Euros without the Pico board. _Compare relay automation boards like this on daily.dev before picking hardware for a Pico project._ ### Does the Olimex PICO-EVB support Home Assistant? Yes, Olimex provides a YAML configuration for ESPHome firmware alongside the PICO-EVB board, enabling integration with the Home Assistant automation framework. The GitHub repository also includes Arduino and MicroPython sample code, including a MicroPython example that runs a web server to display input status and control relays from a browser. _Track home automation hardware integrations like ESPHome and Home Assistant support on daily.dev._ ## Community discussion Top comments from developers on daily.dev. **@neilparker** · 0 upvotes > Great idea - can we perhaps get one with a few more input channels ? Need at least 5 for a double swing gate controller. 4xlimit switches + 1x remote. Maybe with solid state relays. The gates have forward and reverse motors which need electrical interlock (not easily available on ssr but I have a plan using NAND gates). We are driving contactors from the relays so 2 amp SSR will be fine. ## Similar posts on daily.dev - [IoTextra modular automation boards with 4 inputs, 4 outputs work with Raspberry Pi and ESP32 MCU boards](https://daily.dev/posts/iotextra-modular-automation-boards-with-4-inputs-4-outputs-work-with-raspberry-pi-and-esp32-mcu-boa-ewkbh8vq8) · CNX Software · 0 upvotes · 0 comments - [Maker Go ESP32-C5-EVB board features RS-485 interface, four relays, four opto-isolated inputs](https://daily.dev/posts/maker-go-esp32-c5-evb-board-features-rs-485-interface-four-relays-four-opto-isolated-inputs-bok6vsk6m) · CNX Software · 0 upvotes · 0 comments - [Exploring the World of Electronic Engineering with PicoRuby](https://daily.dev/posts/exploring-the-world-of-electronic-engineering-with-picoruby-8bnbuevyw) · Ruby Flow · 0 upvotes · 0 comments - [A Higher-End Pico-Based Oscilloscope](https://daily.dev/posts/a-higher-end-pico-based-oscilloscope-8fxpt5au1) · Hackaday · 0 upvotes · 0 comments - [An ESP32 based devboard with 5 CH32V003 MCUs and 75 GPIO\!](https://daily.dev/posts/an-esp32-based-devboard-with-5-ch32v003-mcus-and-75-gpio--n5ttunlja) · Adafruit Blog · 1 upvotes · 0 comments --- Tags: [#hardware](https://daily.dev/tags/hardware), [#micropython](https://daily.dev/tags/micropython) [View this post on daily.dev](https://daily.dev/posts/olimex-pico-evb-automation-board-adds-high-voltage-terminals-to-raspberry-pi-pico-family-0hfmvalor) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Olimex PICO-EVB automation board adds high-voltage terminals to Raspberry Pi Pico family","url":"https://daily.dev/posts/olimex-pico-evb-automation-board-adds-high-voltage-terminals-to-raspberry-pi-pico-family-0hfmvalor","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/olimex-pico-evb-automation-board-adds-high-voltage-terminals-to-raspberry-pi-pico-family-0hfmvalor"},"datePublished":"2026-07-16T17:02:08.024Z","dateModified":"2026-09-14T09:00:40.736Z","description":"Olimex has released the PICO-EVB, a €14.95 automation board designed for Raspberry Pi Pico and compatible boards. 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Need at least 5 for a double swing gate controller. 4xlimit switches + 1x remote. Maybe with solid state relays. The gates have forward and reverse motors which need electrical interlock (not easily available on ssr but I have a plan using NAND gates). We are driving contactors from the relays so 2 amp SSR will be fine.","datePublished":"2026-07-28T14:17:42.623Z","url":"https://daily.dev/posts/0HFMvaLor#c-ec7A98u6C","author":{"@type":"Person","name":"Neil Parker","url":"https://daily.dev/neilparker","image":"https://lh3.googleusercontent.com/a/ACg8ocKwOviDj-0KzncBempbyKDA-6casZ1B0BrlcIv80hbszSJ8jA=s96-c"}}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/olimex-pico-evb-automation-board-adds-high-voltage-terminals-to-raspberry-pi-pico-family-0hfmvalor#faq","mainEntity":[{"@type":"Question","name":"What relay and input specs does the Olimex PICO-EVB board for Raspberry Pi Pico offer?","acceptedAnswer":{"@type":"Answer","text":"The Olimex PICO-EVB provides four 15V DC/240V AC relays and four optoisolated inputs accepting 3.3-30V DC or 110-220V AC. It works with Raspberry Pi Pico, Pico 2, Pico W, Pico 2 W, and the Olimex RP2040-PICO30, and includes a UEXT connector for I2C, UART, and SPI expansion plus USB-C power and programming. It costs 14.95 Euros without the Pico board. Compare relay automation boards like this on daily.dev before picking hardware for a Pico project."}},{"@type":"Question","name":"Does the Olimex PICO-EVB support Home Assistant?","acceptedAnswer":{"@type":"Answer","text":"Yes, Olimex provides a YAML configuration for ESPHome firmware alongside the PICO-EVB board, enabling integration with the Home Assistant automation framework. The GitHub repository also includes Arduino and MicroPython sample code, including a MicroPython example that runs a web server to display input status and control relays from a browser. Track home automation hardware integrations like ESPHome and Home Assistant support on daily.dev."}}]} ```