https://ukhas.net/wiki/ 2026-05-04T01:28:04+00:00 https://ukhas.net/wiki/ https://ukhas.net/wiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2020-06-27T23:02:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://ukhas.net/wiki/phil_crump:boards:avr_sensor_v2?rev=1593298921&do=diff This board was designed as a cheap and easily assembled Sensor Node for newcomers. Due to the large amount of broken-out GPIO, it could also be used as a development board for a repeater, gateway, or other device. Layout Repository: github.com/philcrump/UKHASnet-avr-sensor/V2 * Layout Image * Schematic Image Potential Applications text/html 2020-06-27T23:02:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://ukhas.net/wiki/phil_crump:boards:avr_sensor_v3?rev=1593298921&do=diff [Gerber Render] This is an AVR and RFM board designed for use as a cheap and simple UKHASnet Node. It also features a 3.3V LDO, broken out AVR GPIO and connection for a switched Sensor. Layout Repository: github.com/philcrump/UKHASnet-avr-sensor/V3 * Schematic Image * Layout Errata * 470K and 100K should replace the 4.7M and 1M resistors in the ADC Divider. This is to reduce error caused by thermally correlated leakage current in the ADC input.