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can-gca2a-en [2019/02/09 12:22] phg [CAN-GC2a Universal 16/14 port I/O node for CANBUS] |
can-gca2a-en [2020/07/02 18:53] (current) rjversluis |
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| - | The CAN-GC2a is an alternative to the CAN-GC20 with almost the same capabilities running on the mergCBUS open source CAN standard. \\ | + | The CAN-GC2a is an alternative to the CAN-GC2 with almost the same capabilities running on the CANBUS open source CAN standard. \\ |
| This unit uses an Arduino nano processor board, instead of the PIC processor.\\ | This unit uses an Arduino nano processor board, instead of the PIC processor.\\ | ||
| Since there is still some development going on, please keep coming back here.\\ | Since there is still some development going on, please keep coming back here.\\ | ||
| Line 28: | Line 28: | ||
| ===== The pcboard ===== | ===== The pcboard ===== | ||
| - | A jumper makes it possible to set terminator on the last board in the mergCBUS chain.\\ | + | A jumper makes it possible to set terminator on the last board in the CANBUS chain.\\ |
| - | This jumper connects a 120 Ohm resistor to the mergCBUS.\\ | + | This jumper connects a 120 Ohm resistor to the CANBUS.\\ |
| White connectors at the back are compatible with all [[:mgv-overview-en|GCA(MGV)xx interfaces]].\\ | White connectors at the back are compatible with all [[:mgv-overview-en|GCA(MGV)xx interfaces]].\\ | ||
| - | These interfaces are mostly electrical isolated from mergCBUS by optocouplers.\\ | + | These interfaces are mostly electrical isolated from CANBUS by optocouplers.\\ |
| - | Power, as available in mergCBUS-cable, is only used for supply of mergCBUS board itself.\\ | + | Power, as available in CANBUS-cable, is only used for supply of CANBUS board itself.\\ |
| As a standard recommandation for all CAN systems, connection and disconnection of cables is not possible while system is running.\\ | As a standard recommandation for all CAN systems, connection and disconnection of cables is not possible while system is running.\\ | ||
| Using this cheap and rigid d-type connector with locking screws will avoid that connectors drop off accidently.\\ | Using this cheap and rigid d-type connector with locking screws will avoid that connectors drop off accidently.\\ | ||
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| Even digital input is not directly possible, but the software will take care for that issue.\\ | Even digital input is not directly possible, but the software will take care for that issue.\\ | ||
| In practice, it turns out that port 9 and 10 are only available as digital input,\\ | In practice, it turns out that port 9 and 10 are only available as digital input,\\ | ||
| + | |||
| + | |||
| + | ===== The sketch for Arduino Nano ===== | ||
| + | |< >| | ||
| + | | {{ :gca:rcan.zip | Th RCAN scetch for CAN-GC2a }}| | ||
| ===== Improved supply ===== | ===== Improved supply ===== | ||
| Line 52: | Line 57: | ||
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| + | |||
| + | ===== The Arduino sketch ===== | ||
| + | |< >| | ||
| + | | {{ :gca:rcan.zip |The RCAN Arduino sketch for CAN-GC2a}} | | ||
| + | \\ | ||
| ===== The hardware ===== | ===== The hardware ===== | ||
| Line 140: | Line 151: | ||
| ====Save output state==== | ====Save output state==== | ||
| - | Write the output state in EEPROM after detecting a **power off command** on the mergCBUS.\\ | + | Write the output state in EEPROM after detecting a **power off command** on the CANBUS.\\ |
| The outputs will be restored after the [[:can-gca2a-en|CAN-GC2a]] is powered on.\\ | The outputs will be restored after the [[:can-gca2a-en|CAN-GC2a]] is powered on.\\ | ||
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| | **BK** | Block | Input with a 2 seconds delayed off. (±50ms) | Occupancy detectors. | | | **BK** | Block | Input with a 2 seconds delayed off. (±50ms) | Occupancy detectors. | | ||
| | **SW** | Switch | Continuous output. | Single coil switch drivers like servos. | | | **SW** | Switch | Continuous output. | Single coil switch drivers like servos. | | ||
| - | | **PU** | Pulse | Output with x ms activation time. (±50ms) | Note: A [[:switch-int-en#switch_time|software timed off]] is not possible with mergCBUS; It is realized in the hardware. | \\ | + | | **PU** | Pulse | Output with x ms activation time. (±50ms) | Note: A [[:switch-int-en#switch_time|software timed off]] is not possible with CANBUS; It is realized in the hardware. | \\ |
| ====Pulse time==== | ====Pulse time==== | ||
can-gca2a-en.1549711358.txt.gz · Last modified: 2019/02/09 12:22 by phg
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