# Latest **URL:** https://forum.core-electronics.com.au/latest.md?page=1 [Latest](https://forum.core-electronics.com.au/latest.md) · [Categories](https://forum.core-electronics.com.au/categories.md) **Page:** 2 --- ## [Peltier Thermo-Electric Cooler Module+Heatsink Assembly - 12V 5A (ADA1335)](https://forum.core-electronics.com.au/t/peltier-thermo-electric-cooler-module-heatsink-assembly-12v-5a-ada1335/13062)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 21\ **Last updated:** [12 October 2026 07:24 UTC](https://forum.core-electronics.com.au/t/peltier-thermo-electric-cooler-module-heatsink-assembly-12v-5a-ada1335/13062 "2026-10-12T07:24:01Z")
This is a placeholder topic for “Peltier Thermo-Electric Cooler Module+Heatsink Assembly - 12V 5A” comments. This is for people who just want to get cold fast. The 12V Peltier module is mounted onto a 12V heatsink and… --- ## [Face recognition biometric device ](https://forum.core-electronics.com.au/t/face-recognition-biometric-device/24481)
**Author:** [@Muhammad333304](https://forum.core-electronics.com.au/u/Muhammad333304)\ **Replies:** 3\ **Last updated:** [9 October 2026 03:09 UTC](https://forum.core-electronics.com.au/t/face-recognition-biometric-device/24481 "2026-10-09T03:09:50Z")
I’m planning to build a face-recognition biometric attendance system for bulk production, with the goal of keeping the hardware cost as low as possible while maintaining good performance and reliability. I’m a software … --- ## [M5Stack Smart QR & Barcode Scanner Unit (CE10062)](https://forum.core-electronics.com.au/t/m5stack-smart-qr-barcode-scanner-unit-ce10062/24449)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 10\ **Last updated:** [9 October 2026 01:49 UTC](https://forum.core-electronics.com.au/t/m5stack-smart-qr-barcode-scanner-unit-ce10062/24449 "2026-10-09T01:49:01Z")
This is a placeholder topic for “M5Stack Smart QR & Barcode Scanner Unit” comments. Explore M5Stack’s Smart QR & Barcode Scanner Unit featuring a 640x480 CMOS sensor, integrated STM32F030 MCU, and versatile I2C/UART com… --- ## [Bambu Lab Desert Tan Matte PLA with Spool (1kg) (CE10900)](https://forum.core-electronics.com.au/t/bambu-lab-desert-tan-matte-pla-with-spool-1kg-ce10900/24478)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 2\ **Last updated:** [8 October 2026 05:40 UTC](https://forum.core-electronics.com.au/t/bambu-lab-desert-tan-matte-pla-with-spool-1kg-ce10900/24478 "2026-10-08T05:40:00Z")
This is a placeholder topic for “Bambu Lab Desert Tan Matte PLA with Spool (1kg)” comments. Display models, decorative prints, and prototypes are perfect applications for PLA Matte. Delivering easy-to-print parts with … --- ## [Dongar adaptor to fit ford ranger](https://forum.core-electronics.com.au/t/dongar-adaptor-to-fit-ford-ranger/24472)
**Author:** [@Darren333275](https://forum.core-electronics.com.au/u/Darren333275)\ **Replies:** 7\ **Last updated:** [8 October 2026 03:22 UTC](https://forum.core-electronics.com.au/t/dongar-adaptor-to-fit-ford-ranger/24472 "2026-10-08T03:22:14Z")
Hey guys is there any way to make a short adaptor harness from my 2015 px2 xlt ford ranger hi-rider auto dimming rear view mirror so i can keep the original factory harness plug ,but can also plug a newer plug in that su… --- ## [Barcode Scan to Light Up Correct Tub System](https://forum.core-electronics.com.au/t/barcode-scan-to-light-up-correct-tub-system/24474)
**Author:** [@KokWah333315](https://forum.core-electronics.com.au/u/KokWah333315)\ **Replies:** 2\ **Last updated:** [8 October 2026 01:41 UTC](https://forum.core-electronics.com.au/t/barcode-scan-to-light-up-correct-tub-system/24474 "2026-10-08T01:41:58Z")
I’m interested in building a pick-to-light / put-to-light system where scanning a barcode will automatically illuminate the correct tub so an item can be placed into the right location. My planned setup will have approx… --- ## [3.5 pannel mount earpiece jack](https://forum.core-electronics.com.au/t/3-5-pannel-mount-earpiece-jack/24459)
**Author:** [@Glen332217](https://forum.core-electronics.com.au/u/Glen332217)\ **Replies:** 5\ **Last updated:** [8 October 2026 01:01 UTC](https://forum.core-electronics.com.au/t/3-5-pannel-mount-earpiece-jack/24459 "2026-10-08T01:01:35Z")
I want to add a 3.5mm audio jack to a security device. This device only has a speaker output so I want to be able to plug in a mono earpiece when I don’t want the audio to come through the speaker. What sort of jack do… --- ## [Document help please](https://forum.core-electronics.com.au/t/document-help-please/24475)
**Author:** [@Bryan160034](https://forum.core-electronics.com.au/u/Bryan160034)\ **Replies:** 2\ **Last updated:** [7 October 2026 05:55 UTC](https://forum.core-electronics.com.au/t/document-help-please/24475 "2026-10-07T05:55:26Z")
Hello Core forum, Do you have guide on how to insert code, drawings, photos etc into your write up. Thank you. Bryan --- ## [SparkFun Thing Plus NINA-B306 + SparkFun SAM-M10Q GPS breakout Cutting out issues](https://forum.core-electronics.com.au/t/sparkfun-thing-plus-nina-b306-sparkfun-sam-m10q-gps-breakout-cutting-out-issues/24466)
**Author:** [@Connor331218](https://forum.core-electronics.com.au/u/Connor331218)\ **Replies:** 8\ **Last updated:** [7 October 2026 05:51 UTC](https://forum.core-electronics.com.au/t/sparkfun-thing-plus-nina-b306-sparkfun-sam-m10q-gps-breakout-cutting-out-issues/24466 "2026-10-07T05:51:22Z")
SparkFun Thing Plus NINA-B306, logging IMU data to the onboard microSD at around 140 Hz. The sketch stops dead after anywhere from 3 seconds to 7 minutes - the status LED stops blinking, serial output stops, and the log … --- ## [The Gippsland Dulcimator](https://forum.core-electronics.com.au/t/the-gippsland-dulcimator/24469)
**Author:** [@Geoffrey172055](https://forum.core-electronics.com.au/u/Geoffrey172055)\ **Replies:** 1\ **Last updated:** [6 October 2026 23:35 UTC](https://forum.core-electronics.com.au/t/the-gippsland-dulcimator/24469 "2026-10-06T23:35:13Z")
This project started with the slightly unreasonable idea of building a stringed instrument that could teach itself how to play. The result, so far, is the Gippsland Dulcimator: a home-built four-string electric dulcimer-… --- ## [Connector type on DFrobot I2C backpack module](https://forum.core-electronics.com.au/t/connector-type-on-dfrobot-i2c-backpack-module/24465)
**Author:** [@Frewster](https://forum.core-electronics.com.au/u/Frewster)\ **Replies:** 8\ **Last updated:** [6 October 2026 03:03 UTC](https://forum.core-electronics.com.au/t/connector-type-on-dfrobot-i2c-backpack-module/24465 "2026-10-06T03:03:39Z")
Greetings my Learned Friends, I’ve been going around in circles trying to find the answer to this through my own research and failed miserably. I’m trying to identify the connector type and ‘proper’ mating connector fo… --- ## [Using 3.7 v Li-Po batter to power ESP32-C3 Mini Development Board](https://forum.core-electronics.com.au/t/using-3-7-v-li-po-batter-to-power-esp32-c3-mini-development-board/15233)
**Author:** [@Tavi28](https://forum.core-electronics.com.au/u/Tavi28)\ **Replies:** 12\ **Last updated:** [4 October 2026 16:43 UTC](https://forum.core-electronics.com.au/t/using-3-7-v-li-po-batter-to-power-esp32-c3-mini-development-board/15233 "2026-10-04T16:43:01Z")
Hi, I am trying to create a wearable device using the ESP32-C3 Mini Development Board and would like to use a 3.7v rechargeable Li-Po battery to power it. I have been unable to find a definitive answer for how to do so … --- ## [Display HAT Mini (PIM589)](https://forum.core-electronics.com.au/t/display-hat-mini-pim589/18558)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 13\ **Last updated:** [3 October 2026 12:50 UTC](https://forum.core-electronics.com.au/t/display-hat-mini-pim589/18558 "2026-10-03T12:50:50Z")
This is a placeholder topic for “Display HAT Mini” comments. A spacious 2.0" (320 x 240) IPS LCD display for Raspberry Pi, with four buttons, an RGB LED and plenty of room for your projects! Read more --- ## [Quartz Clock Mechanism - Box of 20 (KT-2801-20)](https://forum.core-electronics.com.au/t/quartz-clock-mechanism-box-of-20-kt-2801-20/22595)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 4\ **Last updated:** [2 October 2026 11:34 UTC](https://forum.core-electronics.com.au/t/quartz-clock-mechanism-box-of-20-kt-2801-20/22595 "2026-10-02T11:34:28Z")
This is a placeholder topic for “Quartz Clock Mechanism - Box of 20” comments. A precision Quartz Clock Mechanism, complete with easy-to-mount fixing hardware and hour, minute and second hands. Runs for over a year with… --- ## [Power Bank KeepAlive (Adjustable) (TPH-106339)](https://forum.core-electronics.com.au/t/power-bank-keepalive-adjustable-tph-106339/22535)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 9\ **Last updated:** [2 October 2026 05:23 UTC](https://forum.core-electronics.com.au/t/power-bank-keepalive-adjustable-tph-106339/22535 "2026-10-02T05:23:26Z")
This is a placeholder topic for “Power Bank KeepAlive (Adjustable)” comments. Most power banks will automatically turn off their USB ports when the power/current being drawn is lower than a certain value. This makes it … --- ## [Automatic chicken coop door](https://forum.core-electronics.com.au/t/automatic-chicken-coop-door/19608)
**Author:** [@John269131](https://forum.core-electronics.com.au/u/John269131)\ **Replies:** 8\ **Last updated:** [1 October 2026 12:47 UTC](https://forum.core-electronics.com.au/t/automatic-chicken-coop-door/19608 "2026-10-01T12:47:51Z")
Hi. I’m a complete beginner so thanks and apologies in advance. I’ve read the similar forum posts but would feel more confident if I started fresh. My coop has a guillotine door which I want to automate to go up/down at… --- ## [Automatic chicken door](https://forum.core-electronics.com.au/t/automatic-chicken-door/8076)
**Author:** [@Martin105765](https://forum.core-electronics.com.au/u/Martin105765)\ **Replies:** 10\ **Last updated:** [1 October 2026 12:41 UTC](https://forum.core-electronics.com.au/t/automatic-chicken-door/8076 "2026-10-01T12:41:55Z")
Hello, I am looking to add 3 automatic opening chook doors to the revamped and more secure chook house I am presently constructing. Also I am a bit of an electric novice so please forgive my “dumb” questions I have st… --- ## [Advice to build automatic chicken coop door on timer](https://forum.core-electronics.com.au/t/advice-to-build-automatic-chicken-coop-door-on-timer/8796)
**Author:** [@Grace144695](https://forum.core-electronics.com.au/u/Grace144695)\ **Replies:** 4\ **Last updated:** [1 October 2026 12:36 UTC](https://forum.core-electronics.com.au/t/advice-to-build-automatic-chicken-coop-door-on-timer/8796 "2026-10-01T12:36:30Z")
Hi Core Electronics I am looking to build a basic automatic chicken coop door that will open and close on a timer. We are thinking of using a linear actuator, a timer, an electromagnetic relay and a 12v battery (chicke… --- ## [Adafruit USB Type C Plug Breakout (ADA5978)](https://forum.core-electronics.com.au/t/adafruit-usb-type-c-plug-breakout-ada5978/23921)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 5\ **Last updated:** [30 September 2026 05:40 UTC](https://forum.core-electronics.com.au/t/adafruit-usb-type-c-plug-breakout-ada5978/23921 "2026-09-30T05:40:40Z")
This is a placeholder topic for “Adafruit USB Type C Plug Breakout” comments. Throw out all those Mini and Micro B USB cables you have in a plastic bin - the next generation of USB connectors is here with USB C! You've … --- ## [WisBlock RAK3172 LoRaWAN Evaluation Board Kit (RW-316045)](https://forum.core-electronics.com.au/t/wisblock-rak3172-lorawan-evaluation-board-kit-rw-316045/24462)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 2\ **Last updated:** [28 September 2026 05:30 UTC](https://forum.core-electronics.com.au/t/wisblock-rak3172-lorawan-evaluation-board-kit-rw-316045/24462 "2026-09-28T05:30:12Z")
This is a placeholder topic for “WisBlock RAK3172 LoRaWAN Evaluation Board Kit” comments. Break out STM32WLE5CC pins and prototype LoRaWAN A/B/C or P2P networks with slots for add-on modules, battery, solar and on-boar… --- ## [Why does my pico not open the site i give it](https://forum.core-electronics.com.au/t/why-does-my-pico-not-open-the-site-i-give-it/24457)
**Author:** [@Marcus332111](https://forum.core-electronics.com.au/u/Marcus332111)\ **Replies:** 3\ **Last updated:** [25 September 2026 06:42 UTC](https://forum.core-electronics.com.au/t/why-does-my-pico-not-open-the-site-i-give-it/24457 "2026-09-25T06:42:39Z")
My pico throws a connection closed error when i try to open the site. Here is a screenshot of my code. (I use a pico w) --- ## [Bluetooth 5.0 Audio Receiver Board-Controllable Volume (DFR0719)](https://forum.core-electronics.com.au/t/bluetooth-5-0-audio-receiver-board-controllable-volume-dfr0719/15730)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 4\ **Last updated:** [24 September 2026 23:58 UTC](https://forum.core-electronics.com.au/t/bluetooth-5-0-audio-receiver-board-controllable-volume-dfr0719/15730 "2026-09-24T23:58:59Z")
This is a placeholder topic for “Bluetooth 5.0 Audio Receiver Board-Controllable Volume” comments. This is a small size and cost-effective Bluetooth 5.0 Audio Receiver module with auto-reconnect feature. It supports a w… --- ## [How can I measure the quality of an antenna?](https://forum.core-electronics.com.au/t/how-can-i-measure-the-quality-of-an-antenna/24448)
**Author:** [@Pixmusix](https://forum.core-electronics.com.au/u/Pixmusix)\ **Replies:** 6\ **Last updated:** [24 September 2026 04:57 UTC](https://forum.core-electronics.com.au/t/how-can-i-measure-the-quality-of-an-antenna/24448 "2026-09-24T04:57:33Z")
I have lots of antennas at the moment from my mesh-core experiments. I have no idea which are good and which are bad. How can I test them and compare them in quality? I have an oscilloscope with a signal generator if t… --- ## [SenseCAP Card Tracker T1000-E for Meshtastic (SS114993369)](https://forum.core-electronics.com.au/t/sensecap-card-tracker-t1000-e-for-meshtastic-ss114993369/24450)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 2\ **Last updated:** [24 September 2026 03:11 UTC](https://forum.core-electronics.com.au/t/sensecap-card-tracker-t1000-e-for-meshtastic-ss114993369/24450 "2026-09-24T03:11:57Z")
This is a placeholder topic for “SenseCAP Card Tracker T1000-E for Meshtastic” comments. An easy to use meshtastic device. Multi-Protocol Support: Featuring nRF52840 and LR1110, it supports Bluetooth 5.0, Thread, Zigbe… --- ## [Arduino UNO Q - 2GB (ABX00162)](https://forum.core-electronics.com.au/t/arduino-uno-q-2gb-abx00162/23742)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 4\ **Last updated:** [24 September 2026 03:00 UTC](https://forum.core-electronics.com.au/t/arduino-uno-q-2gb-abx00162/23742 "2026-09-24T03:00:10Z")
This is a placeholder topic for “Arduino UNO Q - 2GB” comments. Combining a high-performance Linux CPU with real-time control - capable of running modern tasks such as machine vision, voice recognition. All bundled int… --- ## [Casio DBX-100 repair attempt](https://forum.core-electronics.com.au/t/casio-dbx-100-repair-attempt/18790)
**Author:** [@Kimmo](https://forum.core-electronics.com.au/u/Kimmo)\ **Replies:** 19\ **Last updated:** [23 September 2026 22:30 UTC](https://forum.core-electronics.com.au/t/casio-dbx-100-repair-attempt/18790 "2026-09-23T22:30:04Z")
This bad boy from either 1986 or 1988 (sources differ) is one of a handful of Casios with a full dot matrix display, and has a metal case with a mineral crystal. Such a shame Casio doesn’t make them like this anymore…… --- ## [How to make a Raspberry Pi NAS - A NAS-Berry that Runs Open Media Vault](https://forum.core-electronics.com.au/t/how-to-make-a-raspberry-pi-nas-a-nas-berry-that-runs-open-media-vault/16580)
**Author:** [@Tim](https://forum.core-electronics.com.au/u/Tim)\ **Replies:** 48\ **Last updated:** [23 September 2026 07:00 UTC](https://forum.core-electronics.com.au/t/how-to-make-a-raspberry-pi-nas-a-nas-berry-that-runs-open-media-vault/16580 "2026-09-23T07:00:24Z")
I have just shared content in Guides \> Raspberry-Pi " How to make a Raspberry Pi NAS - A NAS-Berry that Runs Open Media Vault" Read more --- ## [ESP32-S3 1.8inch AMOLED Touch Display Development Board (No Battery) (WS-29958)](https://forum.core-electronics.com.au/t/esp32-s3-1-8inch-amoled-touch-display-development-board-no-battery-ws-29958/24446)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 2\ **Last updated:** [22 September 2026 02:32 UTC](https://forum.core-electronics.com.au/t/esp32-s3-1-8inch-amoled-touch-display-development-board-no-battery-ws-29958/24446 "2026-09-22T02:32:34Z")
This is a placeholder topic for “ESP32-S3 1.8inch AMOLED Touch Display Development Board (No Battery)” comments. A pocket-sized dual-core board pairing a vivid 368×448 AMOLED touchscreen with six-axis motion sensing an… --- ## [10.1inch Capacitive Touch Display for Raspberry Pi, 1280×800, IPS, DSI Interface (CE09234)](https://forum.core-electronics.com.au/t/10-1inch-capacitive-touch-display-for-raspberry-pi-1280x800-ips-dsi-interface-ce09234/17818)
**Author:** [@Core](https://forum.core-electronics.com.au/u/Core)\ **Replies:** 11\ **Last updated:** [22 September 2026 02:23 UTC](https://forum.core-electronics.com.au/t/10-1inch-capacitive-touch-display-for-raspberry-pi-1280x800-ips-dsi-interface-ce09234/17818 "2026-09-22T02:23:47Z")
This is a placeholder topic for “10.1inch Capacitive Touch Display for Raspberry Pi, 1280×800, IPS, DSI Interface” comments. 10.1inch Capacitive Touch Display for Raspberry Pi, 1280×800, IPS, DSI Interface… Read more --- ## [New socket-type raspberry pi hat headers](https://forum.core-electronics.com.au/t/new-socket-type-raspberry-pi-hat-headers/24455)
**Author:** [@Roland124659](https://forum.core-electronics.com.au/u/Roland124659)\ **Replies:** 0\ **Last updated:** [22 September 2026 01:29 UTC](https://forum.core-electronics.com.au/t/new-socket-type-raspberry-pi-hat-headers/24455 "2026-09-22T01:29:29Z")
Hi, I thought I would post a cautionary note on the new socket-type headers being used on hats by Adafruit and I assume others. These are great as they have obvious advantages in compact assemblies and not having to so… [Previous page](https://forum.core-electronics.com.au/latest.md) [Next page](https://forum.core-electronics.com.au/latest.md?page=2)