Summary
3LCD projector from the Eiki EK-130 series. RS-232C asynchronous serial control. Commands begin with "C" and end with carriage return (CR, 0x0D). Two command classes: functional execution commands (return ACK/NAK + CR) and status read commands (return status value or NAK + CR).
Transport
protocols:
- serial
serial:
baud_rate: 19200
data_bits: 8
parity: none
stop_bits: 1
flow_control: none
auth:
type: none # inferred: no auth procedure in source
Wiring: RS-232 cross (null-modem) cable between PC and projector.
Traits
traits:
- powerable # inferred: C00/C01/C02 power commands present
- queryable # inferred: CR0/CR1/CR3/CR4/CR6/CR7 status read commands present
- routable # inferred: C05/C07/C36/C37/C15/C16/C17 input source select commands present
- levelable # inferred: C09/C0A volume and C20/C21 brightness +/- commands present
Actions
# Hex payloads copied verbatim from source. ASCII mnemonic shown in label.
# All functional commands return ACK (or NAK) + CR.
# --- Power ---
- id: power_on
label: "Power On (C00)"
kind: action
command: "43 30 30 0D" # C00 + CR
params: []
- id: power_off_immediate
label: "Power OFF Immediately (C01)"
kind: action
command: "43 30 31 0D" # C01 + CR
params: []
- id: power_off
label: "Power Off (C02)"
kind: action
command: "43 30 32 0D" # C02 + CR
params: []
# --- Input source select ---
- id: select_vga_in_1
label: "VGA IN 1 (C05)"
kind: action
command: "43 30 35 0D" # C05 + CR
params: []
- id: select_video
label: "Video (C07)"
kind: action
command: "43 30 37 0D" # C07 + CR
params: []
- id: select_hdmi_1
label: "HDMI 1 (C36)"
kind: action
command: "43 33 36 0D" # C36 + CR
params: []
- id: select_hdmi_2
label: "HDMI2 (C37)"
kind: action
command: "43 33 37 0D" # C37 + CR
params: []
- id: select_network
label: "NETWORK (C15)"
kind: action
command: "43 31 35 0D" # C15 + CR
params: []
- id: select_memory_viewer
label: "Memory Viewer (C16)"
kind: action
command: "43 31 36 0D" # C16 + CR
params: []
- id: select_usb_display
label: "USB Display (C17)"
kind: action
command: "43 31 37 0D" # C17 + CR
params: []
# --- Keystone ---
- id: keystone_up
label: "Keystone ↑ (C8E)"
kind: action
command: "43 38 45 0D" # C8E + CR
params: []
- id: keystone_down
label: "Keystone ↓ (C8F)"
kind: action
command: "43 38 46 0D" # C8F + CR
params: []
- id: keystone_less
label: "Keystone < (C90)"
kind: action
command: "43 39 30 0D" # C90 + CR
params: []
- id: keystone_greater
label: "Keystone > (C91)"
kind: action
command: "43 39 31 0D" # C91 + CR
params: []
# --- Menu / navigation ---
- id: menu_on
label: "Menu On (C1C)"
kind: action
command: "43 31 43 0D" # C1C + CR
params: []
- id: menu_off
label: "Menu Off (C1D)"
kind: action
command: "43 31 44 0D" # C1D + CR
params: []
- id: pointer_right
label: "Pointer Right (C3A)"
kind: action
command: "43 33 41 0D" # C3A + CR
params: []
- id: pointer_left
label: "Pointer Left (C3B)"
kind: action
command: "43 33 42 0D" # C3B + CR
params: []
- id: pointer_up
label: "Pointer Up (C3C)"
kind: action
command: "43 33 43 0D" # C3C + CR
params: []
- id: pointer_down
label: "Pointer Down (C3D)"
kind: action
command: "43 33 44 0D" # C3D + CR
params: []
- id: enter
label: "Enter (C3F)"
kind: action
command: "43 33 46 0D" # C3F + CR
params: []
# --- Timer ---
- id: timer
label: "Timer (C8A)"
kind: action
command: "43 38 41 0D" # C8A + CR
params: []
- id: timer_exit
label: "Timer Exit (C8B)"
kind: action
command: "43 38 42 0D" # C8B + CR
params: []
# --- Audio ---
- id: mute_on
label: "Mute On (C0B)"
kind: action
command: "43 30 42 0D" # C0B + CR
params: []
- id: mute_off
label: "Mute Off (C0C)"
kind: action
command: "43 30 43 0D" # C0C + CR
params: []
- id: volume_up
label: "Volume + (C09)"
kind: action
command: "43 30 39 0D" # C09 + CR
params: []
- id: volume_down
label: "Volume - (C0A)"
kind: action
command: "43 30 41 0D" # C0A + CR
params: []
# --- Zoom ---
- id: digital_zoom_plus
label: "Digital Zoom + (C30)"
kind: action
command: "43 33 30 0D" # C30 + CR
params: []
- id: digital_zoom_minus
label: "Digital Zoom - (C31)"
kind: action
command: "43 33 31 0D" # C31 + CR
params: []
# --- Image / picture mode ---
- id: image_dynamic
label: "Dynamic (C19)"
kind: action
command: "43 31 39 0D" # C19 + CR
params: []
- id: image_standard
label: "Standard - Image Select (C11)"
kind: action
command: "43 31 31 0D" # C11 + CR
params: []
- id: image_cinema
label: "Image Cinema (C13)"
kind: action
command: "43 31 33 0D" # C13 + CR
params: []
- id: image_blackboard
label: "Blackboard (C18)"
kind: action
command: "43 31 38 00" # C18 - NOTE: source final byte is 00, not 0D (CR). Likely source typo; verbatim per source.
params: []
- id: image_toggle
label: "Image Toggle (C27)"
kind: action
command: "43 32 37 0D" # C27 + CR
params: []
- id: colorboard
label: "Colorboard (C39)"
kind: action
command: "43 33 39 0D" # C39 + CR
params: []
# --- Screen / aspect ---
- id: screen_normal_4_3
label: "Screen Normal size 4:3 (C0F)"
kind: action
command: "43 30 46 0D" # C0F + CR
params: []
- id: screen_wide_16_9
label: "Screen Wide size 16:9 (C10)"
kind: action
command: "43 31 30 0D" # C10 + CR
params: []
- id: display_clear
label: "Display Clear (C1E)"
kind: action
command: "43 31 45 0D" # C1E + CR
params: []
# --- Brightness ---
- id: brightness_up
label: "Brightness + (C20)"
kind: action
command: "43 32 30 0D" # C20 + CR
params: []
- id: brightness_down
label: "Brightness - (C21)"
kind: action
command: "43 32 31 0D" # C21 + CR
params: []
# --- Direct On ---
- id: direct_on_enable
label: "Direct On Enable (C28)"
kind: action
command: "43 32 38 0D" # C28 + CR
params: []
- id: direct_on_disable
label: "Direct On Disable (C29)"
kind: action
command: "43 32 39 0D" # C29 + CR
params: []
# --- Power management ---
- id: power_management_ready
label: "Power Management Ready (C2A)"
kind: action
command: "43 32 41 0D" # C2A + CR
params: []
- id: power_management_off
label: "Power Management OFF (C2B)"
kind: action
command: "43 32 42 0D" # C2B + CR
params: []
- id: power_management_shutdown
label: "Power Management Shut Down (C2E)"
kind: action
command: "43 32 45 0D" # C2E + CR
params: []
# --- Auto adjust ---
- id: auto_pc_adj
label: "Auto PC ADJ. (C89)"
kind: action
command: "43 38 39 0D" # C89 + CR
params: []
# --- Status read (query) commands ---
- id: query_operation_status
label: "Get Projector Operation Status (CR0)"
kind: query
command: "43 52 30 0D" # CR0 + CR
params: []
- id: query_input_source
label: "Get Input Source Information (CR1)"
kind: query
command: "43 52 31 0D" # CR1 + CR
params: []
- id: query_lamp_timer
label: "Lamp Timer Read (CR3)"
kind: query
command: "43 52 33 0D" # CR3 + CR
params: []
- id: query_screen_setting
label: "Get Screen Setting Status (CR4)"
kind: query
command: "43 52 34 00" # CR4 - NOTE: source final byte is 00, not 0D (CR). Likely source typo; verbatim per source.
params: []
- id: query_temperature
label: "Get Internal Temperature Data (CR6)"
kind: query
command: "43 52 36 0D" # CR6 + CR
params: []
- id: query_lamp_mode
label: "Get Lamp Mode Status (CR7)"
kind: query
command: "43 52 37 0D" # CR7 + CR
params: []
- id: query_power_failure_detail
label: "Detect Detail of Power Failure (CR ALLPFAIL)"
kind: query
command: "CR ALLPFAIL" # ASCII mnemonic only; source does not provide hex byte sequence for this command
params: []
Feedbacks
# Generic command acknowledgement (functional commands)
- id: command_ack
type: enum
values: [ACK, NAK]
description: "Functional commands return ACK + CR on success or NAK + CR on failure/rejection."
# Operation status response (CR0)
- id: operation_status
type: enum
values:
- "00" # Power on
- "80" # Standby
- "40" # Countdown in process
- "20" # Cooling down in process
- "10" # Power failure
- "28" # Cooling down in process due to temperature anomaly
- "88" # Coming back after temperature anomaly
- "24" # Power management cooling
- "04" # Suspend status (Power management Ready)
- "21" # Cooling down in process after lamp off
- "81" # Standby after cooling down process due to lamp off
description: "Status code returned by CR0 query."
# Input source response (CR1)
- id: input_source
type: enum
values: [VGA1, HDMI1, "HDMI 2", Video, NETWORK, "Memory Viewer", "USB Display"]
description: "Active input source returned by CR1 query."
# Screen setting response (CR4)
- id: screen_setting
type: enum
values:
- "11" # Normal screen setting
- "10" # Rear & Ceiling ON
- "01" # Rear ON
- "00" # Ceiling ON
description: "Screen/installation orientation returned by CR4 query."
# Temperature response (CR6) - three sensor values formatted "%1_%2_%3"
- id: temperature_data
type: string
description: "Returns 'TemperatureSensor1_TemperatureSensor2_TemperatureSensor3', each shown as '00.0'."
# Lamp mode response (CR7)
- id: lamp_mode
type: enum
values:
- "00" # Light is out
- "01" # Light is on
# Lamp timer response (CR3)
- id: lamp_timer
type: string
description: "Lamp timer value returned by CR3 query. Numeric format/units not fully specified in source."
# Power failure detail response (CR ALLPFAIL)
- id: power_failure_detail
type: string
description: "Detail of power failure. Source example truncated: '000 MAIN, ALL OK' / '000 FAN, 5V OK'. Full response schema not fully specified in source."
Variables
# UNRESOLVED: source documents only discrete +/- and toggle commands (volume, brightness,
# keystone, zoom). No absolute set-value parameters exposed. No settable variables to populate.
Events
# UNRESOLVED: source does not document any unsolicited (push) notifications from the projector.
Macros
# UNRESOLVED: source documents no multi-step command sequences.
Safety
confirmation_required_for: []
interlocks: []
# UNRESOLVED: source contains no explicit safety warnings, interlock procedures, or
# power-on sequencing requirements. Note C01 (Power OFF immediately) vs C02 (Power OFF)
# differ in behavior per source labelling but no interlock detail is given.
Notes
- Command framing: one command per line, begins with ASCII "C" (0x43), ends with carriage return CR (0x0D). Async serial, 19200 8N1, no flow control.
- Two command classes: functional execution (ACK/NAK + CR response) and status read (status value or NAK + CR).
- Hex payloads in Actions are copied verbatim from source table
Command (HEX+CR). - Source anomaly — final-byte discrepancies: C18 is documented as
43 31 38 00and CR4 as43 52 34 00, where every other command terminates with0D(CR). These are transcribed verbatim; the trailing00is most likely a source OCR/typo and should be treated as suspect until verified against a device. Recommended test: send with0Dterminator and confirm response. CR ALLPFAILis documented as an ASCII mnemonic only; no hex byte sequence is provided in the source. Command verbatim is"CR ALLPFAIL"followed by the standard CR terminator (assumed by analogy, not confirmed).- CR6 temperature response uses
%1_%2_%3placeholder format where each%nis one of three internal sensors, displayed as "00.0". - CR3 (Lamp Timer Read) numeric value format and units (hours/min) not explicitly stated in source.
## Provenance
```yaml
source_domains:
- eiki.com
source_urls:
- "https://www.eiki.com/download/ek-130-series-rs232-commands/?wpdmdl=3681&refresh=6a42cce02d8251782762720"
- "https://www.eiki.com/download/ek-130-series-owners-manual/?wpdmdl=3678&refresh=6a42cce00f0941782762720"
- https://www.eiki.com
retrieved_at: 2026-06-29T19:55:23.468Z
last_checked_at: 2026-06-30T07:02:05.842Z
```
## Verification Summary
```yaml
verdict: verified
checked_at: 2026-06-30T07:02:05.842Z
matched_actions: 53
action_count: 53
confidence: medium
summary: "All 53 spec actions matched verbatim in source command table with correct hex sequences and transport parameters verified. (10 unresolved item(s) noted in Known Gaps.)"
```
## Known Gaps
```yaml
- "full command framing details (inter-command timing, command queue depth) not stated in source"
- "source documents only discrete +/- and toggle commands (volume, brightness,"
- "source does not document any unsolicited (push) notifications from the projector."
- "source documents no multi-step command sequences."
- "source contains no explicit safety warnings, interlock procedures, or"
- "firmware version compatibility not stated in source"
- "inter-command timing / minimum gap not stated"
- "full power-failure response schema (CR ALLPFAIL) truncated in source"
- "C18 and CR4 trailing-byte anomaly (00 vs 0D) not resolved"
- "lamp timer units and numeric format not specified"
```
---
From the AI4AV catalog (https://ai4av.net) · ODbL-1.0