Andrews & Arnold Ltd are a UK based communications company. We sell internet, telephone, SMS, and make some serious routers (FireBrick). We use a lot of open source, and give back with a lot of open source code and hardware designs on Codeberg. We have many open source PCB designs. These are not sold as consumer products, but assembled PCBs, development boards for hobbyist use. Suggestions and git merge requests on Codeberg always welcome. https://lectronz.com/stores/revk Custom RSS Generator https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjkwMTEsInB1ciI6ImJsb2JfaWQifX0=--32e1a1408df763d3056ec3c5b4d09f16631d385e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOlsxOTIsMTkyXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--0808b744be7c555ce58430d0ed7115f4f35a0403/aac.png https://lectronz.com/stores/revk Genuine Waveshare 7.5" laminated glass e-paper panel (mono), black border, RAW PANEL (needs controller) Fri, 01 May 2026 12:47:44 +0000 https://lectronz.com/products/waveshare-75-glass-laminated-epd-black-border https://lectronz.com/products/1738 ESP32-S3-MINI-1-N4-R2, USB-C, TDK ICS 43434 microphone, 124 WS2812 style LEDs in rings, diffuse case, works with WLED, with Stargate print Fri, 01 May 2026 12:47:54 +0000 https://lectronz.com/products/led-sound-reactive-printed-coaster-dev-board https://lectronz.com/products/1733 Useful ESP32-S3-MINI-1-N4-R2 development board with USB-C, 4 WS2812 LEDs, button, and LiPo charge circuit. NO MICROPHONE OR SD CARD SLOT Sat, 02 May 2026 06:16:55 +0000 https://lectronz.com/products/surplus-esp32s3-development-board-read-notes https://lectronz.com/products/1741 A PCB designed to operate an ASR33 teletype using 20mA current loop at 110 Baud, including a full copy of Colossal Cave by Will Crowther. Sat, 02 May 2026 06:17:04 +0000 https://lectronz.com/products/asr33-teletype-controller-development-board https://lectronz.com/products/1753 Genuine Waveshare 7.5" laminated glass e-paper black border, with a choice of controller (LEDs, SD, NFC, env sensors) Sun, 03 May 2026 06:47:31 +0000 https://lectronz.com/products/-75-e-paper-choice-of-controller-boards https://lectronz.com/products/1780 The original genuine alternative to Daikin Cloud based WiFi controller, S21/X50A, local control, Home Assistant compatible. Sun, 03 May 2026 06:47:36 +0000 https://lectronz.com/products/faikout-alternative-wifi-air-con-controller https://lectronz.com/products/1735 ESP32-S3-MINI-1 with stereo TDK ICS 43434 I2S MEMS microphone, micro SD, LiPo charging circuit, clip for shirt/lanyard Sun, 03 May 2026 06:47:40 +0000 https://lectronz.com/products/high-quality-audio-recorder-dev-board-case https://lectronz.com/products/1736 A ring of 552 WS2812 style LEDs, 3.3V-5V, in a style of a gate, 137mm wide, dev board. Sun, 03 May 2026 06:47:44 +0000 https://lectronz.com/products/led-ring-gate-style-with-552-ws2812-style-leds https://lectronz.com/products/1737 An ESP32-S3 board, with power supply (USB-C and DC 5V-17V), USB-C flash/debug, and all GPIOs, and a WS2812 LED Sun, 03 May 2026 06:47:48 +0000 https://lectronz.com/products/small-esp32-s3-mini-1-n4-r2-dev-board-all-gpios https://lectronz.com/products/1781 ESP32S3 based WS281X/SK6812 LED Strip controller with WAGO connector, and TDK ICS 43434 MEMS Microphone. USB-C in-line style Sun, 03 May 2026 06:47:53 +0000 https://lectronz.com/products/tiny-sound-reactive-led-strip-controller-usb-c https://lectronz.com/products/1739 ESP32S3 based WS281X/SK6812 LED Strip controller with WAGO connector, and TDK ICS 43434 MEMS Microphone Sun, 03 May 2026 06:47:57 +0000 https://lectronz.com/products/tiny-sound-reactive-led-strip-controller https://lectronz.com/products/1740 A small, 32mm, ring of 88 WS2812 style RGB LEDs, arranged as rings of 4,12,16,24,32 Wed, 06 May 2026 09:54:25 +0000 https://lectronz.com/products/-88-ws2812-led-ring-32mm-ironman-glove https://lectronz.com/products/1797 Designed as an access control, this has multiple GPIOs, solid state relay, and NFC reader connections all on WAGOs, with LEDs and tamper. Wed, 06 May 2026 09:54:34 +0000 https://lectronz.com/products/access-control-dev-board https://lectronz.com/products/1792 Generic cable for Faikout/S21 to pin header sockets, and 3D resin case for Faikin Wed, 06 May 2026 09:54:42 +0000 https://lectronz.com/products/faikouts21-generic-cable-50cm-and-case https://lectronz.com/products/1794 PN532 NFC Reader (DESFire capable) on round board, with R/A/G LEDs tamper, and 5 pin connector for high speed UART working. Wed, 06 May 2026 09:55:39 +0000 https://lectronz.com/products/nfc-reader-board-pn532-with-case-and-lead https://lectronz.com/products/1793 Grid of 30x9 WS2812 LEDs, 2.54mm (0.1") spaced with no border, 3.3V or 5V (3A max at 5V full white) Wed, 06 May 2026 09:55:47 +0000 https://lectronz.com/products/stackable-30x9-270-led-ws2812-grid-254mm https://lectronz.com/products/1796 ESP32-S3-MINI-1-N4-R2 with WAGO connector to drive LED strip, 2 pin WAGO as input button, USB-C, and LiPo charging logic. Fri, 08 May 2026 08:37:45 +0000 https://lectronz.com/products/battery-powered-controller-development-board https://lectronz.com/products/1801 ESP32S3 board with microphones, speaker driver and small speaker, LiPo charger, USB-C, comm badge roundel style Fri, 08 May 2026 08:37:49 +0000 https://lectronz.com/products/comm-badge-esp32s3-development-board https://lectronz.com/products/1799 ESP32-S3-MINI-1-N4-R2, TDK ICS 43434 mic, MAX98357A speaker driver, plus speaker Fri, 08 May 2026 08:37:54 +0000 https://lectronz.com/products/esp32-audio-development-board-speaker https://lectronz.com/products/1798 A control / display for Faikout aircon controllers, or just as environmental monitor, ESP32S3 based, development board. Fri, 08 May 2026 08:37:58 +0000 https://lectronz.com/products/faikout-remote-env-monitor-dev-board-with-co2 https://lectronz.com/products/1777 Designed for an IronMan suit, 4 WS2812 LED / servo outputs, Stereo speaker driver, Stereo microphones, Micro SD card, USB-C, ESP32-S3 Fri, 08 May 2026 08:38:04 +0000 https://lectronz.com/products/multi-port-controller-development-board-ironman https://lectronz.com/products/1800 A contact card (CCID) reader and passive monitor and emulator - development board. Fri, 08 May 2026 13:23:23 +0000 https://lectronz.com/products/ccid-reader-monitor-dev-board https://lectronz.com/products/1795 A control / display for Faikout aircon controllers with no CO2 or IR Fri, 08 May 2026 13:23:40 +0000 https://lectronz.com/products/older-faikout-remote-env-monitor-dev-board https://lectronz.com/products/1825 Self contained module designed to flash ESP32-S3 over its USB interface from images stored on SD card Fri, 08 May 2026 13:23:46 +0000 https://lectronz.com/products/esp32-flasher-board https://lectronz.com/products/1828 ESP32S3 based WS281X/SK6812 LED Strip controller with WAGO connector, and TDK ICS 43434 MEMS Microphone. USB-A in-line style Fri, 08 May 2026 13:24:11 +0000 https://lectronz.com/products/tiny-sound-reactive-led-strip-controller-usb-a https://lectronz.com/products/1826