Has anyone using the ESP8266 with the SDK had a go at using the JSON routines yet? I ask because I need to pass several MQTT messages to the board in a string. I can of course do this the hard way, comma delimiter or similar, but it would be…
SOLID STATE MINI-RELAY FOR ESP8266
The PR26MF22NSZ and it’s larger cousin the PR39MF22NSZ are miniature 8-pin devices which look for all the world like any other 8-pin chip – but are able to switch mains power at up to 0.9amps – i.e. up to 200w. Seems unbelievable but that’s the claim – sensible you could…
ESP8266 GPIO
Has anyone had a go at making a set of macros or defines in C to make the programming of the GPIO pins easier? For people used to: setMode(1,OUTPUT); a cold sweat appears when confronted with PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDI_U, FUNC_GPIO12); And if you’re only dealing with GPIO0 and GPIO2 then that’s not…
Cricket Simulator
You would think there would be loads of these floating around, but no, people make them the hard way. So here, rescued from my original wordpress site – is my Digistump (Arduino) cricket generator (sound simulator). I figured this out back in 2014 while sitting in the sun in Spain.…
The Mighty 1284p
The 1284p is the next step up from the ATMega328 chip powering many of the “Arduino” type microcontroller boards and their many clones. Why another chip? Well, anyone who has used the ATMega328 knows that it’s a great controller chip but the lack of RAM soon gets very tiring. Also…