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Roar Fredriksen
2018-04-09 18:11:21 +02:00
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Electrical/HAN_ESP_Simple/README.md
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# Electrical Design # Electrical Design
### **!!NOTE!!** ### **!!NOTE!!**
The more mature version of a HAN Port reader is available under the folder [HAN_ESP_TSS721](HAN_ESP_TSS721). The main difference in these two versions are that this one is using a proprietary (but simpler) circuit for the M-bus to TTL The more mature version of a HAN Port reader is available under the folder [HAN_ESP_TSS721](../HAN_ESP_TSS721). The main difference in these two versions are that this one is using a proprietary (but simpler) circuit for the M-bus to TTL
conversion and has very limited resources available for doing work on the schematics and PCB. The [HAN_ESP_TSS721](HAN_ESP_TSS721) is using a TSS721 circuit conversion and has very limited resources available for doing work on the schematics and PCB. The [HAN_ESP_TSS721](../HAN_ESP_TSS721) is using a TSS721 circuit
from Texas Instruments, specifically designed for M-bus to TTL conversion. Also from Texas Instruments, specifically designed for M-bus to TTL conversion. Also
all design is available for you in a [KiCad](https://www.kicad-pcb.org) format. all design is available for you in a [KiCad](https://www.kicad-pcb.org) format.