2 layers47 × 49 mm
Audio amplifier
jeff4444/kicad-projects
An RF remote control encoder PCB using the HT12E serial encoder IC.
14 parts
2 layers49.5 × 48 mm
Recyclobot
jeff4444/kicad-projectsAn RF remote control encoder PCB using the HT12E serial encoder IC.
- Size
- 49.5 × 48 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 16
- Pads
- 55
- Tracks, vias
- 96, 9
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 30 Dec 2025
- Updated
- 30 Dec 2025
Overview
Recyclobot is an open-source printed circuit board by jeff4444, from the jeff4444/kicad-projects repository on GitHub. It is a 2-layer board of 49.5 × 48 mm with 19 parts on 16 nets, routed with 96 tracks and 9 vias.
It is built around the LM3914N-1, BC547 and IR204-A-L. Its parts include 11 diodes, 4 resistors, 2 transistors, 1 IC and 1 connector.
Main components
3README
recyclobot/controller/README.mdRecyclobot Controller
An RF remote control encoder PCB using the HT12E serial encoder IC.
Overview
This board serves as the wireless remote control transmitter for the Recyclobot project. It uses the HT12E encoder IC to convert button presses into a serial data stream that can be transmitted wirelessly to the Recyclobot motherboard.
Key Features
-
HT12E Serial Encoder IC
- 2^12 (4096) address combinations for security
- 4 data bits for control signals
- Low power consumption for battery operation
- Simple oscillator circuit using external resistor
-
LED indicators for status/feedback
-
Connectors for:
- Control buttons/inputs
- RF transmitter module
- Power supply
Specifications
| Parameter | Value |
|---|---|
| Main IC | HT12E |
| Address Bits | 8 (A0-A7) |
| Data Bits | 4 (D0-D3) |
| Package | SOP-20 / DIP-18 |
| Operating Voltage | 2.4V - 12V |
System Integration
This controller pairs with the Recyclobot Motherboard which uses an HT12D decoder to receive and interpret the transmitted commands.
┌─────────────────┐ RF Signal ┌─────────────────┐
│ Controller │ ─────────────────▶│ Motherboard │
│ (HT12E) │ │ (HT12D) │
│ │ │ (L293D) │
└─────────────────┘ └─────────────────┘
Remote RobotFiles
recyclobot.kicad_sch- Schematicrecyclobot.kicad_pcb- PCB layoutgerbers/- Manufacturing files
References
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | LED | LED_THT:LED_D3.0mm | D2, D3, D4, D5, D6, D7, D8, D9, D10, D11 |
| 2 | 200 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R5 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4 |
| 1 | 2.2K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q3 |
| 1 | BPW40 | LED_THT:LED_D5.0mm_Clear | Q1 |
| 1 | Conn_01x02_Socket | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J1 |
| 1 | IR204A | LED_THT:LED_D3.0mm_IRBlack | D1 |
| 1 | LM3914N | Package_DIP:DIP-18_W7.62mm | U1 |
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Questions
How big is the Recyclobot PCB?
It measures 49.5 × 48 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Recyclobot use?
19 parts, built around the LM3914N-1, BC547 and IR204-A-L. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Recyclobot KiCad files?
From the jeff4444/kicad-projects repository on GitHub, at the commit this page was made from: the board is proximity_sensor/recyclobot.kicad_pcb and its schematic FSO/Receiver board/Circuit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Recyclobot design in my own project?
Its repository states no licence, so its author keeps all rights: ask jeff4444 before reusing the design.