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Errata, Corrections, & Updates Errata, Corrections, & Updates Circuit Cellar‘s editorial staff endeavors to publish accurate information. When mistakes are made, the staff will note them on this page and include corrections. If you think a mistake was published in Circuit Cellar, please send your comments and suggestions to editor@circuitcellar.com. Circuit Cellar 362 (September 2020) A reader noticed an error in the schematic Figure 5 on page 9 in the article “Machine Vision Random Number Generator Using the Raspberry Pi” by Devlin Gualtieri. The 2N3906 transistor is flipped–the emitter should be connected to the +5V supply and the collector should be connected to the LED current-limiting resistors and LCD back light circuit. The transistor is correctly connected on the PCB layout (Figure 6).

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