If you appetite to bung a USB cable into your aing project, you’ve got a problem. USB is not UART, and UART is what every microcontroller consecutive anchorage wants. To add USB to your microcontroller project, you’ll charge to add a abutment chip, allegedly from FTDI, although there are a aggregation of almost-FTDI clones accessible from the added genitalia of the Internet. These genitalia are hardly expensive, and they crave some abutment circuitry. What you absolutely charge is a simple accessory that requires basal alien components, takes in consecutive from your microcontroller and spits out USB, and costs no added than a dollar. Bonus credibility if it’s hand-solderable.
The CH330 is allegedly the acknowledgment to this problem (That’s a TaoBao link, this is allegedly activity to be the best articulation activity forward). It’s a asleep simple dent with eight pins. Two are the abstracts curve on a USB cable, and two are TX and RX for your microcontroller. The added pins are aloof power, ground, and an RTS line. Best of all, it alone costs about fifty cents. You’ve never heard about it, because a few hours afterwards this column is published, it will be the best advice you’re activity to get on this dent in the English-speaking world.
As far as we can tell, the CH330 is the aboriginal in a band of USB to UART converters from WCH, although the allotment isn’t alike on the company’s website. The aboriginal advertence to the byword ‘CH330’ in advertence to a USB dent appeared about a ages ago, at the alpha of September. There’s a GitHub for addition who is allegedly application this dent in a Pine64 board, but that’s about it. There’s no added information.
Right now, the alone affidavit for this dent is a distinct Chinese-language datasheet with an archetype schematic assuming this dent affiliated to a MAX232 as a USB to RS232 converter. This is it. You’re attractive at all the advice that exists on this dent in the English-speaking adaptation of the Internet.
The abstraction of a cheap, baby dent that calmly turns USB into UART would be abundant for bags of projects. An FTDI dent will work, yes, but if you’re authoritative bags of a affair you ability appetite to go with the fifty cent allotment over the two dollar part. That said, we’re in abstinent amnion with this part, and you can’t alike acquisition it on AliExpress.
Let us apperceive if you’ve gotten your easily on one of these devices. This has the abeyant to be absolutely advantageous in a lot of projects and products, and we’re acquisitive to see what the association comes up with. Thanks to [acabx] for sending this one in on the tip line.
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