Chinese CP2102 Prop Plug knockoff for $1
tonyp12
Posts: 1,950
Don't know how they do it, the cp2102 is $1 alone, they use old version but that one have eeprom and not OTP, but there is not many settings you can change,
you can increase 5V enumeration from 100mA to 500mA (0xFA) in the settings, the onchip 3.3V ldo is 100mA.
I hot glued one to a P1, a little to much work to be worth it.
I also soldered the included 6pin right angle header downwards for breadboard, or get machined pins if you don't plan to leave it in permanently.
2.2nF series cap on DTR works just fine.
https://www.aliexpress.com/store/product/CJMCU-CP2102-USB-To-TTL-Serial-Module-UART-STC-Downloader-For-Arduino/716258_32480350871.html?spm=2114.12010610.8148356.5.46ab47echdjMHU
10pcs lot (mine showed up in 12days)
https://www.aliexpress.com/item/10PCS-LOT-CJMCU-CP2102-USB-To-TTL-Serial-Module-UART-STC-Downloader-For-Arduino/32481087057.html?spm=a2g0s.9042311.0.0.b4114c4dWdWgDl
Some credit cards charge foreign transaction fee (like 3% so not much, but maybe yours have a minimum fee in dollars), I used a visa debitcard and no fee.
VCP driver for cp2102
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
you can increase 5V enumeration from 100mA to 500mA (0xFA) in the settings, the onchip 3.3V ldo is 100mA.
I hot glued one to a P1, a little to much work to be worth it.
I also soldered the included 6pin right angle header downwards for breadboard, or get machined pins if you don't plan to leave it in permanently.
2.2nF series cap on DTR works just fine.
https://www.aliexpress.com/store/product/CJMCU-CP2102-USB-To-TTL-Serial-Module-UART-STC-Downloader-For-Arduino/716258_32480350871.html?spm=2114.12010610.8148356.5.46ab47echdjMHU
10pcs lot (mine showed up in 12days)
https://www.aliexpress.com/item/10PCS-LOT-CJMCU-CP2102-USB-To-TTL-Serial-Module-UART-STC-Downloader-For-Arduino/32481087057.html?spm=a2g0s.9042311.0.0.b4114c4dWdWgDl
Some credit cards charge foreign transaction fee (like 3% so not much, but maybe yours have a minimum fee in dollars), I used a visa debitcard and no fee.
VCP driver for cp2102
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
2646 x 1714 - 968K
1549 x 1276 - 471K
Comments
These are the ones I use, with a full size USB plug: https://www.ebay.com/itm/142881009790
Edit: there was initially a driver installation issue with Win10's 1803 update, but that's been fixed now: https://www.silabs.com/community/interface/forum.topic.html/cp210x_driver_v101-91Gl
I've also had good results with CH340 adapters: https://www.ebay.com/itm/253701999257
I stay clear of PL2303s (issues with Win10) and FT232s since the great bricking incidents of 2014 and 2016: https://www.theregister.co.uk/2016/01/31/ftdi_accused_of_bricking_counterfeits_again/