Some simple Arduino code to read from a keypad

Wired up a cheap keypad to an Arduino. These keypads were a few cents each on ebay and look suitable for a project I’m working on. This is the same keypad as used here and their code is worth referring to. The following reads presses from the keypad and prints them over serial. It only …

Simple JS->DNS Proxy with golang server side

I wanted the ability to resolve DNS addresses in client side Javascript. Unfortunately you can’t do DNS lookups in browser. As a hack I wrote a quick DNS proxy in golang which allows the JS to perform GET requests to a golang server which will lookup and DNS entry and return IP addresses. The HTML …

esp8266 IoT SDK 0.9.5 release, my notes

A new version of the SDK was released today. A few additional APIs have been introduced, but it appears that no existing functions have been changed/removed. I was able to replace the 0.9.3 SDK with this and compile my codebase successfully. I’ll update here after I’ve tried flashing a device. (UPDATE: I tested the ADC …