Monthly Archives: August 2016

Level Shifting and Tablet Building …

Figure 1: The new tablet uses re-purposed materials on the circuit board floor. This project is more involved than a simple exercise in converting 3.3 and 1.8 volt logic levels.  It also involves building yet another homemade tablet.  I have … Continue reading

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Using a Pi SBC with Shortwave Radio

New Orleans Coast Guard weather fax operates at 4.317  4.344 MHz, so it is far outside of the default (7 MHz CF) filter bandpass of the BPF that I have in the little sidecar SDR. Currently, there is no bandpass … Continue reading

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Homebrewing a Board for the MCP3426 ADC

Figure 1:  The simple connection from the USBIO to the ADC The ADC devices currently in all three of my “homemade” tablets are a little under powered, so we’re upgrading all of them to use 16 bit Microchip MCP3426 ADC … Continue reading

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