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STATEMENT:  I have a problem refreshing, the  20 odd displays in less than 1/4 second each, which would let them seem that there all bright, but they will be dim, to begin with. So multiplexing is now out for the 7 segment displays, but I still will multiplex the four 16 segment displays. SOLUTION: I found an IC that handles eight 7-segment displays and it has a built-in SPI interface. The device is a MAX-7221 which will give me a solution for my problem. As you can see in the block d ...
Well, here we are back again, with the Fuel Load Meter. This thing has given me nothing but grief. So I am going to take another whack at it. I still have to make sure that the wiring is correct. and then write the code. The problem I was/am having is the 30 pin connector that goes to the display.  This is a Never-Ending-Story not to be confused with the movie with the same name (German: Die Unendliche Geschichte). It seems like you take one step forward and two or three backward. This tim ...
This unit is most likely made by YIHUA.  The 853D is broken down into three functional blocks. SMD Rework Wand. This has a digital temperature control and has interchangeable tips. Solder Station Wand. This has a digital temperature control and it is removable via a 5-pin Din Plug. (I intend to buy a solder removal gun with vacuum) Power Supply (0-15vdc) with Digital Voltage Readout but set with a potentiometer. It also has an analog current meter. The Test Switch has two positions: Th ...