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HC573 / ULN2803 Board testing notesNo

Now I have completed all the soldering work and offline testing for the board. Next step is online testing. .END
Dual RFM12B board testing notes

Now I am using a bread board to make aSPI signal routing board for both RFM12Bs. Previously I was using jumper wires to jump between tw...
Dual RFM12B board testing notes

Now I have jumper wired the following configuration. 1. SPI Ground, MOSI, MISO connected to both RFM12B's corresponding pins. ...
Microchip Technology SPI Master EEPROM 25LC256 program example

SPI Master EEPROM by Microchip Technology - June 21, 2012 http://embeddedcodesource.com/developer/microchip_technology_59/spi_master_eepr...
2N7000 level shifting board notes

Raspberry Pi I2C Level Shifter and GPO Expander board assembly notes 2012年12月28日上午11:27 公開累計瀏覽次數 18 0 Now I am going to try ...
Webcam pair hung on a lamp post

Now I have hung a pair of webcams on a lamp post for LED lamps. .END
MCP23017 testing notes

I am reading my old posts to refresh my memory on how did I test the MCP23017 last time. MCP23017 test preparation notes 2012年12月31日下午2:3...
HC573 pinout
7segment 4 digit LED displays arrived

My toys arrived an hour ago. I have made a socket board for holding the HK$2.5 4 digit 7-segment LED display HG3461GB. .END
LM1881 video line selector learning notes

Now I am reading the LM1881 datasheet to see how to select video lines. .END