All the pictures on this page refer to a circuit board prior to the MkVIIc circuit board. There a number of minor improvements.
All the images can be clicked to reveal a higher resolution image. For the part locator image, look for the green stars.
This kit contains many small components. A clear workspace is recommended. First identify the all components. Use the parts count to help. All the resistors are clearly labelled but the surface mount capacitors are unmarked as is the MOV. Construction should only be attempted by experienced hobbyists.
A small soldering iron and tweezers are required and a visual aid like a lit magnifying glass is recommended. There are also some parts ( the FET bodies, some ground connections and the main connector ) that will require a soldering iron that has a higher heat capacity ( not termperature ) to properly heat the solder.
I suggest assembly in the order of the parts list ( left ) upto and including the MOV( apply MOV with main connector ). Then refer to testing to complete the kit. Note some components around the ignition FETs are not used but a link from the cenre pin of T1 T2 must be made to the FETs. See picture above.
Make sure the microprocessor is not in its socket and Q5 not installed for these initial tests. I suggest using a small 9V battery or a 12V battery with a 100 ohm resistor in series. Do not proceed if a test fails.
At this stage you need to get the MyECU talking to the PC or Android device.
For the bluetooth interface refer to post #62 in this thread on my forum
The USB to serial cable must be connected to the network cable. There are only 3 connections that need to be made, 0V, Rx and Tx. The picture below, click to enlarge, shows how the cables are connected. The colours can be use to match them up.
Note there are 2 0V wires and the large diameter heatshrink had been placed prior to soldering. I also cut the unused wires to different length to prevent shorting.