Fully Open CCS Charge Controller (FOCCCI)
Disclaimer: This Page is still work in progress! Any information written here is a draft only and should be handled as such. Contributions more then welcome. If you have questions please ask them in the discussion section of the page or in the OpenInvert Forum.
This page is about FOCCCI. FOCCCI is an open source CCS Charge Controller started by Uhi and developed by the OpenInverter Community.
Here you will find documentation on the Hardware, where to get it (or how to build it yourself), News regarding the development and many more great things.
Focci runs on the reference software CCS32Clara (also referred to as Clara).
Focci in the OpenInverter Forum.
Hardware detection
To allow software to reliably detect which version hardware it runs off in HW version 4.1 a version indication resistor was added
| Variant | R1 | R2 | voltage | ADC | +/-3% range |
|---|---|---|---|---|---|
| - | 47k | 2k7 | 0.29 V | 357 | 346-368 |
| - | 47k | 3k3 | 0.35 V | 431 | 418-444 |
| - | 47k | 3k9 | 0.41 V | 504 | 489-519 |
| - | 47k | 4k7 | 0.48 V | 598 | 580-616 |
| - | 47k | 5k1 | 0.52 V | 643 | 624-662 |
| - | 47k | 5k6 | 0.56 V | 700 | 679-721 |
| - | 47k | 6k8 | 0.67 V | 831 | 806-856 |
| - | 47k | 7k5 | 0.73 V | 905 | 878-932 |
| 4.0 with economizer | 47k | 8k2 | 0.79 V | 977 | 948-1006 |
| - | 47k | 9k1 | 0.86 V | 1067 | 1035-1099 |
| 4.1 | 47k | 10k | 0.93 V | 1154 | 1119-1189 |
| 4.2 | 47k | 12k | 1.08 V | 1338 | 1298-1378 |