I have just bought another ESP8266/NodeMCU development board cheapy from eBay (this one) with an ESP-12E chip on board. I’ve also bought an SPI-CAN bus interface with the common Microchip MCP2515 CAN controller to try and create a CAN-Wifi gateway.
Last summer I bought a 1992 MR2 Turbo – it’s fun to drive, and fast. However, while driving home from work one day, I suffered from some horrible knocking noise from the engine. When I pulled over and stopped, the engine seized solid. So I’m now planning on removing the engine and fixing it.
Here’s some videos:
I had real trouble finding a suitable alternative oxygen/lambda probe for my 1992 Rev 2 MR2 Turbo. I can’t find the original Denso part number at the moment, but I managed to find that a Denso DOX-0107 fits the flange size correctly and is 1-wire, it just requires soldering to the original connector. It’s got a Flange 44 type flange which apparently matches the 3SGTE.
I got it from http://service-parts.co.uk/denso-oxygen-sensor-dox-0107
Update 2020 – This sensor is still working strong! So can confirm it is a suitable alternative to the standard Rev 2 MK2 MR2 Turbo Oxygen Sensor
So a friend told me about the Duke Axial Engine the other day. It’s certainly a very interested idea and does produce some clever solutions to some of the fundamental complexities and disadvantages to the reciprocating internal combustion engine. I always like the idea of novel engine designs, and this one certainly looks like it has potential. Take a look at the video followed by some analysis after the break.
After receiving my ESP8266 Development/breakout board I have been attempting to create a WiFi enabled thermostat to control my central heating from my mobile phone and give me a means of timer programming my central heating. To be a true thermostat requires a temperature sensor. The ESP8266 board came with a DHT11 sensor and already has pins directly compatible with one. I therefore just required the software to interface with it.
ESP8266 Flasher Tool: https://github.com/nodemcu/nodemcu-flasher/blob/master/Win32/Release/ESP8266Flasher.exe
Latest nodeMCU firmware: https://github.com/nodemcu/nodemcu-firmware/blob/master/pre_build/latest/nodemcu_latest.bin
Benlo.com LuaLoader for NodeMCU files and ESP8266 configuration:
Simple ESP8266 GPIO Websserver:
ESP 8266 Development Board Schematic:
Write up of the ESP8266 Development Board:
I have now determined that The DIP switch no 8 does indeed connect GND to GPIO pin 0, and switch S2 is also connected to the same pin. This means that to put the board into reprogramming mode to reflash the ESP8266, the DIP switch 8 should be ON (or hold down S2, but probably not a good idea)
Switch S3 connects GND to GPIO Pin 2.
I’m embarking on a project to fuel inject my 1987 Austin Mini, which has already had an engine swap from a 998 to a 1098, but currently runs on an HS4 1.5″ single carburettor.
This obviously offers a reasonable level of tunability, with the ability to change needles, dashpot damper springs, dashpot oil and mixture adjustment and is relatively easy to set up for quite a reasonable state of tune, especially now that I have an AFR meter installed.
However, I would like to try fitting an MPI system and develop my own ECU for electronic fuel injection. Due to the ‘Siamese ports’ on the A-Series engine causing charge robbing, and only having one fuel injector per two ports, this is apparently something that’s difficult to achieve well, which makes me want to do it all the more.
Manifold Absolute Pressure (MAP)/ Manifold Pressure sensors are used to determine the pressure of the air inside the inlet manifold, just before it enters the engine inlet ports. This is generally measured between the Throttle Body and the intake ports on a naturally aspirated engine, and between the turbocharger compressor outlet (after the Intercooler) on turbocharged or supercharged engines.