What are some cheap alternatives to Atmega32u4?

• ch32v103

  2 31 4.2 C

WCH CH32V203 (approx. $0.50) with RT-Thread? There are no examples for it on Github but you can use the V307 and V103 repos.: https://github.com/openwch/ch32v103

• stcgal-patched

  3 16 4.4 Python

  stcgal patched to support STC8G, STC8H, STC8A8K64D4 and STC32G.

It's an MCS-51derivative, supported by SDCC (documentation here). The technical reference manual is here, the updated downloader here, a HAL with examples here, and further explanations on the MCU there. Chips are available here.

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• uni-STC

  3 23 7.6 C

  SDCC support + HAL + drivers for STC 8051 MCU

It's an MCS-51derivative, supported by SDCC (documentation here). The technical reference manual is here, the updated downloader here, a HAL with examples here, and further explanations on the MCU there. Chips are available here.

• Awesome_STC

  4 5 7.1 Shell

  How-To style documentation on STC MCU

It's an MCS-51derivative, supported by SDCC (documentation here). The technical reference manual is here, the updated downloader here, a HAL with examples here, and further explanations on the MCU there. Chips are available here.

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