Uploaded February 2025 | Updated September 2026, 20 hours ago
With demonstrations using Arduinos and TI SN75176B transceivers …
↓↓↓ Complete description, time index and links below ↓↓↓
In the previous video we developed protocol, hardware and software for two Arduinos, a master and a slave, to communicate via RS-485 (link below). Now it’s time to handle unresponsive slaves and more than one slave.
First we talk about the necessity of timeouts to protect our master from unresponsive slaves and extend our master’s code accordingly. Then we add addressing to the whole scheme, which allows us to have multiple slaves on the bus.
00:00 Intro – fixing a fatal flaw and controlling multiple slaves
00:59 Timeouts – necessary evil of RS-485 master-slave busses
11:32 Addressing – required if you want more than one slave
24:09 Wrap-up – next is biasing the bus to simplifying things, bye
Tutorials youtube.com/playlist?list=PLwq-2MnM58FKn3920rc1V0qoTsQDheTIw
RS-485 – The Basics (1/2): Principles, Topology, Specification, Performance youtu.be/DRR9NUAMKic
RS-485 – The Basics (2/2): Simple Master-Slave Half-Duplex Setup youtu.be/FBA98ks61Dg
RS-485 – The Details (1/4): Timeouts, Addressing, Multiple Slaves youtu.be/ncQ16ht-9nU
RS-485 – The Details (2/4): Failsafe Biasing, Associated Protocol Simplifications youtu.be/ITlgIUTyPVo
RS-485 – The Details (3/4): Full-Duplex Bus, Interleaving Messages youtu.be/N9N53I6ipG0
RS-485 – The Details (4/4): Modbus, PROFIBUS, DMX youtu.be/SzlGJrPhmwE
RS-422 Differential Signaling (Renesas ISL8490, Arduino MCU) – The Basics (1/2) youtu.be/6YWZMRe-7DQ
RS-422 Differential Signaling (Renesas ISL8490, Arduino MCU) – The Basics (2/2) youtu.be/hoZ4D2Tk9Qc
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (1/2) youtu.be/__EvQgr3sGA
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (2/3) youtu.be/0WHKMjBg1QQ
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (3/4) youtu.be/y0wD84uRvbY
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (4/4) youtu.be/Xamy60ZRohw
My Code drive.google.com/drive/folders/11rs-fVaGd1o7osX7Kb3Id6G8_kFdO4QJ?usp=sharing
Texas Instruments, Application Report, RS-422 and RS-485 Standards Overview and System Configurations focus.ti.com/lit/an/slla070d/slla070d.pdf
#rs485 #arduino #mcu #microcontroller #tutorials #tutorial #how-to #robertssmorgasbord
With demonstrations using Arduinos and TI SN75176B transceivers …
↓↓↓ Complete description, time index and links below ↓↓↓
In the previous video we developed protocol, hardware and software for two Arduinos, a master and a slave, to communicate via RS-485 (link below). Now it’s time to handle unresponsive slaves and more than one slave.
First we talk about the necessity of timeouts to protect our master from unresponsive slaves and extend our master’s code accordingly. Then we add addressing to the whole scheme, which allows us to have multiple slaves on the bus.
00:00 Intro – fixing a fatal flaw and controlling multiple slaves
00:59 Timeouts – necessary evil of RS-485 master-slave busses
11:32 Addressing – required if you want more than one slave
24:09 Wrap-up – next is biasing the bus to simplifying things, bye
Tutorials youtube.com/playlist?list=PLwq-2MnM58FKn3920rc1V0qoTsQDheTIw
RS-485 – The Basics (1/2): Principles, Topology, Specification, Performance youtu.be/DRR9NUAMKic
RS-485 – The Basics (2/2): Simple Master-Slave Half-Duplex Setup youtu.be/FBA98ks61Dg
RS-485 – The Details (1/4): Timeouts, Addressing, Multiple Slaves youtu.be/ncQ16ht-9nU
RS-485 – The Details (2/4): Failsafe Biasing, Associated Protocol Simplifications youtu.be/ITlgIUTyPVo
RS-485 – The Details (3/4): Full-Duplex Bus, Interleaving Messages youtu.be/N9N53I6ipG0
RS-485 – The Details (4/4): Modbus, PROFIBUS, DMX youtu.be/SzlGJrPhmwE
RS-422 Differential Signaling (Renesas ISL8490, Arduino MCU) – The Basics (1/2) youtu.be/6YWZMRe-7DQ
RS-422 Differential Signaling (Renesas ISL8490, Arduino MCU) – The Basics (2/2) youtu.be/hoZ4D2Tk9Qc
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (1/2) youtu.be/__EvQgr3sGA
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (2/3) youtu.be/0WHKMjBg1QQ
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (3/4) youtu.be/y0wD84uRvbY
RS-422 Differential Signaling (ISL8490, AdUM121N) – The Details (4/4) youtu.be/Xamy60ZRohw
My Code drive.google.com/drive/folders/11rs-fVaGd1o7osX7Kb3Id6G8_kFdO4QJ?usp=sharing
Texas Instruments, Application Report, RS-422 and RS-485 Standards Overview and System Configurations focus.ti.com/lit/an/slla070d/slla070d.pdf
#rs485 #arduino #mcu #microcontroller #tutorials #tutorial #how-to #robertssmorgasbord
